Description
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: fix inverted genmask check in nft_map_catchall_activate()
nft_map_catchall_activate() has an inverted element activity check
compared to its non-catchall counterpart nft_mapelem_activate() and
compared to what is logically required.
nft_map_catchall_activate() is called from the abort path to re-activate
catchall map elements that were deactivated during a failed transaction.
It should skip elements that are already active (they don't need
re-activation) and process elements that are inactive (they need to be
restored). Instead, the current code does the opposite: it skips inactive
elements and processes active ones.
Compare the non-catchall activate callback, which is correct:
nft_mapelem_activate():
if (nft_set_elem_active(ext, iter->genmask))
return 0; /* skip active, process inactive */
With the buggy catchall version:
nft_map_catchall_activate():
if (!nft_set_elem_active(ext, genmask))
continue; /* skip inactive, process active */
The consequence is that when a DELSET operation is aborted,
nft_setelem_data_activate() is never called for the catchall element.
For NFT_GOTO verdict elements, this means nft_data_hold() is never
called to restore the chain->use reference count. Each abort cycle
permanently decrements chain->use. Once chain->use reaches zero,
DELCHAIN succeeds and frees the chain while catchall verdict elements
still reference it, resulting in a use-after-free.
This is exploitable for local privilege escalation from an unprivileged
user via user namespaces + nftables on distributions that enable
CONFIG_USER_NS and CONFIG_NF_TABLES.
Fix by removing the negation so the check matches nft_mapelem_activate():
skip active elements, process inactive ones.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 5.15.121 – < 5.15.200, 6.1.36 – < 6.1.163, 4.19.316 – < 4.20, 5.4.262 – < 5.5, 5.10.188 – < 5.11, 6.3.10 – < 6.4, 6.4 | 5.15.200 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 6.18.10-1 | — |
| Debian 13 | linux | 6.12.73-1 | DSA-6141-1 |
| Debian 12 | linux | 6.1.164-1 | DSA-6163-1 |
| Debian 11 | linux-6.1 | 6.1.164-1~deb11u1 | DLA-4499-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 24.04 LTS | linux-bluefield | 6.8.0-1017.21 | — |
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | No fix yet | — |
| Ubuntu 25.10 | linux | 6.17.0-20.20 | USN-8149-1 |
| Ubuntu 25.10 | linux-aws +2 | 6.17.0-1010.10 | USN-8149-2, USN-8149-1 |
| Ubuntu 25.10 | linux-azure +1 | 6.17.0-1011.11 | USN-8149-3, USN-8149-2 |
| Ubuntu 25.10 | linux-azure-fde | No fix yet | — |
| Ubuntu 25.10 | linux-realtime | 6.17.0-1009.10 | USN-8149-1 |
| Ubuntu 25.10 | linux-riscv | 6.17.0-20.20.1 | — |
| Ubuntu 24.04 LTS | linux | 6.8.0-107.107 | USN-8148-1 |
| Ubuntu 24.04 LTS | linux-aws | 6.8.0-1051.54 | USN-8148-1 |
| Ubuntu 24.04 LTS | linux-aws-6.17 +2 | 6.17.0-1010.10~24.04.1 | USN-8149-2, USN-8149-1 |
| Ubuntu 24.04 LTS | linux-azure | 6.8.0-1052.58 | USN-8148-6 |
| Ubuntu 24.04 LTS | linux-azure-6.17 | 6.17.0-1011.11~24.04.2 | USN-8149-3 |
| Ubuntu 24.04 LTS | linux-azure-fde | 6.8.0-1058.65 | — |
| Ubuntu 24.04 LTS | linux-azure-nvidia | 6.8.0-1039.42 | — |
| Ubuntu 24.04 LTS | linux-gcp | 6.8.0-1053.56 | USN-8148-1 |
| Ubuntu 24.04 LTS | linux-gke | 6.8.0-1049.54 | USN-8148-1 |
| Ubuntu 24.04 LTS | linux-gkeop | 6.8.0-1036.39 | USN-8148-1 |
| Ubuntu 24.04 LTS | linux-hwe-6.17 | 6.17.0-20.20~24.04.1 | USN-8149-1 |
| Ubuntu 24.04 LTS | linux-ibm | 6.8.0-1050.50 | USN-8148-1 |
| Ubuntu 24.04 LTS | linux-lowlatency | 6.8.0-107.107.1 | USN-8148-1 |
| Ubuntu 24.04 LTS | linux-nvidia | 6.8.0-1050.53 | USN-8148-1 |
| Ubuntu 24.04 LTS | linux-nvidia-6.17 | 6.17.0-1018.18 | — |
| Ubuntu 24.04 LTS | linux-nvidia-lowlatency | 6.8.0-1050.53.1 | USN-8148-7 |
| Ubuntu 24.04 LTS | linux-nvidia-tegra | 6.8.0-1021.21 | USN-8148-7 |
| Ubuntu 24.04 LTS | linux-oem-6.17 | 6.17.0-1017.17 | USN-8152-1 |
| Ubuntu 24.04 LTS | linux-oracle | 6.8.0-1049.50 | USN-8203-1 |
| Ubuntu 24.04 LTS | linux-raspi | 6.8.0-1051.55 | USN-8148-1 |
| Ubuntu 24.04 LTS | linux-riscv +18 | No fix yet | — |
| Ubuntu 24.04 LTS | linux-riscv-6.17 | 6.17.0-20.20.1~24.04.1 | — |
| Ubuntu 24.04 LTS | linux-xilinx | 6.8.0-1028.29 | USN-8261-1 |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-174.184 | USN-8159-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1104.111 | USN-8159-1 |
| Ubuntu 22.04 LTS | linux-aws-6.8 | 6.8.0-1051.54~22.04.1 | USN-8148-5 |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1109.118 | USN-8163-2 |
| Ubuntu 22.04 LTS | linux-azure-6.8 | 6.8.0-1052.58~22.04.1 | USN-8148-6 |
| Ubuntu 22.04 LTS | linux-azure-fde-6.8 | 6.8.0-1058.65~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1104.113 | USN-8159-1 |
| Ubuntu 22.04 LTS | linux-gcp-6.8 | 6.8.0-1053.56~22.04.1 | USN-8148-5 |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1100.106 | USN-8159-1 |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1087.95 | USN-8159-1 |
| Ubuntu 22.04 LTS | linux-hwe-6.8 +1 | 6.8.0-107.107~22.04.1 | USN-8148-5 |
| Ubuntu 22.04 LTS | linux-ibm +1 | 5.15.0-1098.101 | USN-8159-1 |
| Ubuntu 22.04 LTS | linux-ibm-6.8 | 6.8.0-1050.50~22.04.1 | USN-8148-5 |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1099.105 | USN-8159-1 |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1096.101 | USN-8159-1 |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-6.8 | 6.8.0-107.107.1~22.04.1 | USN-8148-5 |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1099.100 | USN-8159-1 |
| Ubuntu 22.04 LTS | linux-nvidia-6.8 | 6.8.0-1050.53~22.04.1 | USN-8148-5 |
| Ubuntu 22.04 LTS | linux-nvidia-tegra | 5.15.0-1056.56 | USN-8159-1 |
| Ubuntu 22.04 LTS | linux-nvidia-tegra-igx | 5.15.0-1045.45 | USN-8159-1 |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1101.107 | USN-8159-1 |
| Ubuntu 22.04 LTS | linux-oracle-6.8 | 6.8.0-1049.50~22.04.1 | USN-8203-1 |
| Ubuntu 22.04 LTS | linux-riscv +33 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-xilinx-zynqmp | 5.15.0-1068.72 | USN-8159-1 |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-raspi-realtime | 6.8.0-2041.42 | USN-8148-3 |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime | 6.8.1-1046.47 | USN-8148-3 |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime-6.14 | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime-6.17 | 6.17.0-1009.10~24.04.1 | USN-8148-4 |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1096.98 | USN-8164-1 |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1103.112 | USN-8159-3 |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime-6.8 | 6.8.1-1046.47~22.04.2 | USN-8148-3 |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-aws-fips | 6.8.0-1051.54+fips1 | USN-8148-2 |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-azure-fips | 6.8.0-1052.58+fips1 | USN-8165-1 |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-fips | 6.8.0-107.107+fips1 | USN-8148-2 |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-gcp-fips | 6.8.0-1053.56+fips1 | USN-8148-2 |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-aws-fips | 5.15.0-1104.111+fips1 | USN-8159-2 |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-azure-fips | 5.15.0-1109.118+fips1 | USN-8163-1 |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips | 5.15.0-174.184+fips1 | USN-8159-2 |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-gcp-fips | 5.15.0-1104.113+fips1 | USN-8159-2 |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-aws-fips +2 | No fix yet | — |
| Ubuntu Pro 25.10 | linux | 6.17.0-20.20 | LSN-0119-1 |
| Ubuntu Pro 24.04 LTS | linux | 6.8.0-107.107 | LSN-0119-1 |
| Ubuntu Pro 24.04 LTS | linux-aws | 6.8.0-1051.54 | LSN-0119-1 |
| Ubuntu Pro 24.04 LTS | linux-azure | 6.8.0-1052.58 | LSN-0119-1 |
| Ubuntu Pro 24.04 LTS | linux-gcp | 6.8.0-1053.56 | LSN-0119-1 |
| Ubuntu Pro 24.04 LTS | linux-ibm | 6.8.0-1050.50 | LSN-0119-1 |
| Ubuntu Pro 24.04 LTS | linux-oracle | 6.8.0-1049.50 | LSN-0119-1 |
| Ubuntu Pro 22.04 LTS | linux | 5.15.0-173.183 | LSN-0119-1 |
| Ubuntu Pro 22.04 LTS | linux-aws | 5.15.0-1103.110 | LSN-0119-1 |
| Ubuntu Pro 22.04 LTS | linux-aws-6.8 | 6.8.0-1051.54~22.04.1 | LSN-0119-1 |
| Ubuntu Pro 22.04 LTS | linux-azure | 5.15.0-1109.118 | LSN-0119-1 |
| Ubuntu Pro 22.04 LTS | linux-gcp | 5.15.0-1103.112 | LSN-0119-1 |
| Ubuntu Pro 22.04 LTS | linux-gcp-6.8 | 6.8.0-1053.56~22.04.1 | LSN-0119-1 |
| Ubuntu Pro 22.04 LTS | linux-gke | 5.15.0-1099.105 | LSN-0119-1 |
| Ubuntu Pro 22.04 LTS | linux-ibm | 5.15.0-1097.100 | LSN-0119-1 |
| Ubuntu Pro 22.04 LTS | linux-ibm-6.8 | 6.8.0-1050.50~22.04.1 | LSN-0119-1 |
| Ubuntu Pro 22.04 LTS | linux-oracle | 5.15.0-1100.106 | LSN-0119-1 |
| Ubuntu Pro 20.04 LTS | linux | 5.4.0-227.247 | LSN-0119-1 |
| Ubuntu Pro 20.04 LTS | linux-aws | 5.4.0-1156.166 | LSN-0119-1 |
| Ubuntu Pro 20.04 LTS | linux-aws-5.15 | 5.15.0-1103.110~20.04.1 | USN-8159-1, LSN-0119-1 |
| Ubuntu Pro 20.04 LTS | linux-azure-5.15 | 5.15.0-1110.119~20.04.1 | USN-8243-1, LSN-0119-1 |
| Ubuntu Pro 20.04 LTS | linux-gcp-5.15 | 5.15.0-1103.112~20.04.1 | USN-8159-1, LSN-0119-1 |
| Ubuntu Pro 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-173.183~20.04.1 | USN-8188-1, USN-8159-1, LSN-0119-1 |
| Ubuntu Pro 20.04 LTS | linux-ibm-5.15 | 5.15.0-1097.100~20.04.1 | USN-8159-1, LSN-0119-1 |
| Ubuntu Pro 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1099.105~20.04.1 | USN-8159-1 |
| Ubuntu Pro 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1057.57~20.04.1 | USN-8162-1 |
| Ubuntu Pro 20.04 LTS | linux-oracle-5.15 | 5.15.0-1100.106~20.04.1 | USN-8159-1, LSN-0119-1 |
| Ubuntu Pro 20.04 LTS | linux-riscv-5.15 +1 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | linux | 4.15.0-249.261 | LSN-0119-1 |
| Ubuntu Pro 18.04 LTS | linux-aws | 4.15.0-1191.204 | LSN-0119-1 |
| Ubuntu Pro 18.04 LTS | linux-azure-4.15 | 4.15.0-1200.215 | LSN-0119-1 |
| Ubuntu Pro 18.04 LTS | linux-gcp-4.15 | 4.15.0-1184.201 | LSN-0119-1 |
| Ubuntu Pro 18.04 LTS | linux-hwe-5.4 | 5.4.0-227.247~18.04.1 | LSN-0119-1 |
| Ubuntu Pro 18.04 LTS | linux-oracle | 4.15.0-1153.164 | LSN-0119-1 |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1191.204~16.04.1 | LSN-0119-1 |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1200.215~16.04.1 | LSN-0119-1 |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-249.261~16.04.1 | LSN-0119-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | rv +76 | 6.12.0-211.7.1.el10_2 | RHSA-2026:18134 |
| RHEL 9 | rv +75 | 5.14.0-611.47.1.el9_7 | RHSA-2026:6570 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | rv +77 | 6.12.0-55.70.1.el10_0 | RHSA-2026:10996 |
| RHEL 9.6 EUS | kpatch-patch-5_14_0-570_116_1 | 1-9.el9_6 | RHSA-2026:62641 |
| RHEL 9.6 EUS | kpatch-patch-5_14_0-570_17_1 | 1-24.el9_6 | RHSA-2026:62641 |
| RHEL 9.6 EUS | kpatch-patch-5_14_0-570_39_1 | 1-15.el9_6 | RHSA-2026:62641 |
| RHEL 9.6 EUS | kpatch-patch-5_14_0-570_66_1 | 1-14.el9_6 | RHSA-2026:62641 |
| RHEL 9.6 EUS | kpatch-patch-5_14_0-570_94_1 | 1-12.el9_6 | RHSA-2026:62641 |
| RHEL 9.6 EUS | rv +77 | 5.14.0-570.108.1.el9_6 | RHSA-2026:9112 |
| RHEL 9.4 EUS | bpftool | 7.3.0-427.121.1.el9_4 | RHSA-2026:10108 |
| RHEL 9.4 EUS | rv +64 | 5.14.0-427.121.1.el9_4 | RHSA-2026:10108 |
| RHEL 9.4 E4S | kpatch-patch-5_14_0-427_100_1 | 1-14.el9_4 | RHSA-2026:62639 |
| RHEL 9.4 E4S | kpatch-patch-5_14_0-427_113_1 | 1-12.el9_4 | RHSA-2026:62639 |
| RHEL 9.4 E4S | kpatch-patch-5_14_0-427_126_1 | 1-9.el9_4 | RHSA-2026:62639 |
| RHEL 9.4 E4S | kpatch-patch-5_14_0-427_68_2 | 1-21.el9_4 | RHSA-2026:62639 |
| RHEL 9.4 E4S | kpatch-patch-5_14_0-427_84_1 | 1-16.el9_4 | RHSA-2026:62639 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | rv +74 | 6.12.0-211.7.1.el10_2 | ALSA-2026:18134 |
| AlmaLinux 9 | rv +73 | 5.14.0-611.47.1.el9_7 | ALSA-2026:6570 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | kernel | 5.14.0-611.47.1.el9_7 | RLSA-2026:6570 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | kernel-64kb +7 | 6.4.0-150700.53.34.1 | SUSE-SU-2026:1081-1 |
| SLES 15 SP7 | kernel-default-base | 6.4.0-150700.53.34.1.150700.17.23.1 | SUSE-SU-2026:1081-1 |
| SLES 15 SP6 | kernel-64kb +6 | 6.4.0-150600.23.92.1 | SUSE-SU-2026:1041-1 |
| SLES 15 SP6 | kernel-default-base | 6.4.0-150600.23.92.1.150600.12.42.2 | SUSE-SU-2026:1041-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | kernel-64kb +8 | 6.12.0-160000.27.1 | SUSE-SU-2026:20931-1 |
| SLES for SAP 16.0 | kernel-default-base | 6.12.0-160000.27.1.160000.2.8 | SUSE-SU-2026:20931-1 |
| SLES for SAP 16.0 | kernel-livepatch-SLE16_Update_0 | 9-160000.4.3 | SUSE-SU-2026:21217-1 |
| SLES for SAP 16.0 | kernel-livepatch-SLE16_Update_1 | 7-160000.1.1 | SUSE-SU-2026:21219-1 |
| SLES for SAP 16.0 | kernel-livepatch-SLE16_Update_2 | 5-160000.1.1 | SUSE-SU-2026:21221-1 |
| SLES for SAP 16.0 | kernel-livepatch-SLE16_Update_3 | 4-160000.1.1 | SUSE-SU-2026:21220-1 |
| SLES for SAP 16.0 | kernel-livepatch-SLE16_Update_4 | 3-160000.1.1 | SUSE-SU-2026:21216-1 |
| SLES for SAP 16.0 | kernel-livepatch-SLE16_Update_5 | 2-160000.1.1 | SUSE-SU-2026:21218-1 |
| SLES for SAP 15 SP6 | kernel-default-base | 6.4.0-150600.23.92.1.150600.12.42.2 | SUSE-SU-2026:1041-1 |
| SLES for SAP 15 SP6 | kernel-docs +4 | 6.4.0-150600.23.92.1 | SUSE-SU-2026:1041-1 |
| SLES 16.0 | kernel-64kb +8 | 6.12.0-160000.27.1 | SUSE-SU-2026:20931-1 |
| SLES 16.0 | kernel-default-base | 6.12.0-160000.27.1.160000.2.8 | SUSE-SU-2026:20931-1 |
| SLES 16.0 | kernel-livepatch-SLE16_Update_0 | 9-160000.4.3 | SUSE-SU-2026:21217-1 |
| SLES 16.0 | kernel-livepatch-SLE16_Update_1 | 7-160000.1.1 | SUSE-SU-2026:21219-1 |
| SLES 16.0 | kernel-livepatch-SLE16_Update_2 | 5-160000.1.1 | SUSE-SU-2026:21221-1 |
| SLES 16.0 | kernel-livepatch-SLE16_Update_3 | 4-160000.1.1 | SUSE-SU-2026:21220-1 |
| SLES 16.0 | kernel-livepatch-SLE16_Update_4 | 3-160000.1.1 | SUSE-SU-2026:21216-1 |
| SLES 16.0 | kernel-livepatch-SLE16_Update_5 | 2-160000.1.1 | SUSE-SU-2026:21218-1 |
| SLE Micro 6.2 | kernel-default-base | 6.12.0-160000.27.1.160000.2.8 | SUSE-SU-2026:20838-1 |
| SLE Micro 6.2 | kernel-livepatch-SLE16-RT_Update_0 | 7-160000.3.4 | SUSE-SU-2026:21007-1 |
| SLE Micro 6.2 | kernel-livepatch-SLE16-RT_Update_1 | 6-160000.1.1 | SUSE-SU-2026:21008-1 |
| SLE Micro 6.2 | kernel-livepatch-SLE16_Update_0 | 9-160000.4.3 | SUSE-SU-2026:21096-1 |
| SLE Micro 6.2 | kernel-livepatch-SLE16_Update_1 | 7-160000.1.1 | SUSE-SU-2026:21099-1 |
| SLE Micro 6.2 | kernel-livepatch-SLE16_Update_2 | 5-160000.1.1 | SUSE-SU-2026:21102-1 |
| SLE Micro 6.2 | kernel-livepatch-SLE16_Update_3 +1 | 4-160000.1.1 | SUSE-SU-2026:21100-1, SUSE-SU-2026:21009-1 |
| SLE Micro 6.2 | kernel-livepatch-SLE16_Update_4 +2 | 3-160000.1.1 | SUSE-SU-2026:21020-1, SUSE-SU-2026:21006-1, SUSE-SU-2026:21005-1 |
| SLE Micro 6.2 | kernel-livepatch-SLE16_Update_5 +1 | 2-160000.1.1 | SUSE-SU-2026:21098-1, SUSE-SU-2026:21004-1 |
| SLE Micro 6.2 | kernel-rt +5 | 6.12.0-160000.27.1 | SUSE-SU-2026:20873-1, SUSE-SU-2026:20838-1 |
| SLE Micro 6.1 | kernel-default-base | 6.4.0-40.1.21.17 | SUSE-SU-2026:20667-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0-RT_Update_10 | 12-1.1 | SUSE-SU-2026:21056-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0-RT_Update_13 +1 | 3-1.1 | SUSE-SU-2026:21053-1, SUSE-SU-2026:21052-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0-RT_Update_5 | 17-1.1 | SUSE-SU-2026:21061-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0-RT_Update_6 | 15-3.1 | SUSE-SU-2026:21060-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0-RT_Update_7 | 15-1.3 | SUSE-SU-2026:21059-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0-RT_Update_9 | 12-1.2 | SUSE-SU-2026:21057-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0_Update_10 +1 | 8-1.1 | SUSE-SU-2026:21055-1, SUSE-SU-2026:21045-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0_Update_11 +2 | 7-1.1 | SUSE-SU-2026:21054-1, SUSE-SU-2026:21044-1, SUSE-SU-2026:21043-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0_Update_13 | 5-1.1 | SUSE-SU-2026:21042-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0_Update_14 | 3-1.2 | SUSE-SU-2026:21041-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0_Update_16 +1 | 2-1.1 | SUSE-SU-2026:21051-1, SUSE-SU-2026:21040-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0_Update_5 | 18-1.2 | SUSE-SU-2026:21050-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0_Update_6 | 16-3.1 | SUSE-SU-2026:21049-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0_Update_7 | 15-1.2 | SUSE-SU-2026:21048-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0_Update_8 +2 | 14-1.2 | SUSE-SU-2026:21058-1, SUSE-SU-2026:21047-1, SUSE-SU-2026:21046-1 |
| SLE Micro 6.1 | kernel-rt +4 | 6.4.0-40.1 | SUSE-SU-2026:20876-1, SUSE-SU-2026:20667-1 |
| SLE Micro 6.0 | kernel-default-base | 6.4.0-40.1.21.17 | SUSE-SU-2026:20720-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0-RT_Update_10 | 12-1.1 | SUSE-SU-2026:21086-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0-RT_Update_13 +1 | 3-1.1 | SUSE-SU-2026:21083-1, SUSE-SU-2026:21082-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0-RT_Update_5 | 17-1.1 | SUSE-SU-2026:21091-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0-RT_Update_6 | 15-3.1 | SUSE-SU-2026:21090-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0-RT_Update_7 | 15-1.3 | SUSE-SU-2026:21089-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0-RT_Update_9 | 12-1.2 | SUSE-SU-2026:21087-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0_Update_10 +1 | 8-1.1 | SUSE-SU-2026:21085-1, SUSE-SU-2026:21075-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0_Update_11 +2 | 7-1.1 | SUSE-SU-2026:21084-1, SUSE-SU-2026:21074-1, SUSE-SU-2026:21073-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0_Update_13 | 5-1.1 | SUSE-SU-2026:21072-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0_Update_14 | 3-1.2 | SUSE-SU-2026:21071-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0_Update_16 +1 | 2-1.1 | SUSE-SU-2026:21081-1, SUSE-SU-2026:21070-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0_Update_5 | 18-1.2 | SUSE-SU-2026:21080-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0_Update_6 | 16-3.1 | SUSE-SU-2026:21079-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0_Update_7 | 15-1.2 | SUSE-SU-2026:21078-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0_Update_8 +2 | 14-1.2 | SUSE-SU-2026:21088-1, SUSE-SU-2026:21077-1, SUSE-SU-2026:21076-1 |
| SLE Micro 6.0 | kernel-rt +4 | 6.4.0-40.1 | SUSE-SU-2026:20845-1, SUSE-SU-2026:20720-1 |
| SLE Live Patching 15 SP7 | kernel-default | 6.4.0-150700.53.34.1 | SUSE-SU-2026:1081-1 |
| SLE Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7-RT_Update_1 | 13-150700.2.1 | SUSE-SU-2026:1188-1 |
| SLE Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7-RT_Update_10 | 1-150700.1.3.1 | SUSE-SU-2026:0962-1 |
| SLE Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7-RT_Update_6 | 4-150700.2.1 | SUSE-SU-2026:1180-1 |
| SLE Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7_Update_0 | 13-150700.3.36.1 | SUSE-SU-2026:1283-1 |
| SLE Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7_Update_10 | 1-150700.15.3.1 | SUSE-SU-2026:1081-1 |
| SLE Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7_Update_4 | 8-150700.2.1 | SUSE-SU-2026:1244-1 |
| SLE Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7_Update_5 +1 | 5-150700.2.1 | SUSE-SU-2026:1278-1, SUSE-SU-2026:1185-1 |
| SLE Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7_Update_6 +3 | 3-150700.2.1 | SUSE-SU-2026:1284-1, SUSE-SU-2026:1279-1, SUSE-SU-2026:1261-1 |
| SLE Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7_Update_9 +1 | 2-150700.2.1 | SUSE-SU-2026:1262-1, SUSE-SU-2026:1187-1 |
| SLE Live Patching 15 SP6 | kernel-default | 6.4.0-150600.23.92.1 | SUSE-SU-2026:1041-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_11 +1 | 14-150600.2.1 | SUSE-SU-2026:1239-1, SUSE-SU-2026:1236-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_13 | 12-150600.2.1 | SUSE-SU-2026:1283-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_14 | 8-150600.2.1 | SUSE-SU-2026:1271-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_16 | 5-150600.2.1 | SUSE-SU-2026:1225-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_17 +2 | 3-150600.2.1 | SUSE-SU-2026:1274-1, SUSE-SU-2026:1272-1, SUSE-SU-2026:1261-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_20 | 2-150600.2.1 | SUSE-SU-2026:1266-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_21 | 1-150600.13.5.1 | SUSE-SU-2026:1041-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_9 | 16-150600.2.1 | SUSE-SU-2026:1259-1 |
| SUSE Real Time Module 15 SP7 | kernel-rt +2 | 6.4.0-150700.7.34.1 | SUSE-SU-2026:0962-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | kernel-default-base | 6.12.0-160000.27.1.160000.2.8 | openSUSE-SU-2026:20416-1 |
| openSUSE Leap 16.0 | kernel-rt +11 | 6.12.0-160000.27.1 | openSUSE-SU-2026:20416-1 |
| openSUSE Leap 15.6 | dtb-aarch64 +10 | 6.4.0-150600.23.92.1 | SUSE-SU-2026:1041-1 |
| openSUSE Leap 15.6 | kernel-default-base | 6.4.0-150600.23.92.1.150600.12.42.2 | SUSE-SU-2026:1041-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.12.73-95.123 +1 | 1:1.0-0.amzn2023 | ALAS2023-2026-1487, ALAS2023-2026-1468 |
| Amazon Linux 2023 | perf +14 | 1:6.1.163-186.299.amzn2023 | ALAS2023-2026-1468 |
| Amazon Linux 2023 | perf6.12 +14 | 1:6.12.73-95.123.amzn2023 | ALAS2023-2026-1487 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | kernel | 6.6.126.1-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | rv +29 | 6.12.0-211.34.1.el10_2 | ELSA-2026-18134 |
| Oracle Linux 9 | kernel-uek +34 | 6.12.0-200.74.27.el10uek | ELSA-2026-50372, ELSA-2026-50232, ELSA-2026-50160 |
| Oracle Linux 9 | rv +28 | 5.14.0-611.47.1.el9_7 | ELSA-2026-6570 |
| Oracle Linux 8 | bpftool +18 | 5.15.0-318.199.3.2.el9uek | ELSA-2026-50145 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 10 repositories
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Knz-source/CVE-2026-23111-POC-noddlenpottato ★ 10 · Aug 12, 2026
CVE-2026-23111 nf_tables catchall UAF — unprivileged LPE for Linux 5.10-6.18. Auto-adaptive exploit with KASLR bypass, arbitrary kernel read, and ROP chain. Supports Debian, Ubuntu, RHEL, Fedora. C/P…
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Baba01hacker666/CVE-2026-23111 ★ 7 · Jun 25, 2026
Linux Kernel nf_tables Use-After-Free (CVE-2026-23111) — LPE PoC
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kinokopio/CVE-2026-23111 ★ 6 · Oct 19, 2026
CVE-2026-23111 nf_tables UAF exploit for Ubuntu 6.8.0-101-generic: unprivileged user → host root, plus container escape to the host.
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ashrafzaryouh/CVE-2026-23111 ★ 5 · Jun 9, 2026
CVE-2026-23111
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ishankaru/CVE-2026-23111-nftables-lab ★ 2 · Jun 11, 2026
Exposure checker and safe disposable-VM lab for CVE-2026-23111 (Linux nf_tables use-after-free local privilege escalation). Defensive: detection, mitigation, multi-distro lab. No exploit.
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bakano98/cve-2026-23111-poc ★ 1 · Jul 1, 2026
scuffed PoC for CVE-2026-23111. Made and ran on Linux Kernel 6.12.69
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imeiplus/CVE-2026-23111-PoC ★ 0 · Sep 20, 2026
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seguridadentrerios/CVE-2026-23111 ★ 0 · Jun 10, 2026
Vulnerabilidad nf_tables del kernel que permite el acceso de root
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HORKimhab/CVE-2026-23111 ★ 0 · Jun 9, 2026
CVE-2026-23111 - Linux - Draft
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criann/check-cve-2026-23111 ★ 0 · Jun 9, 2026
Script to check if system are vulnable to cve-2026-23111
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 50
- RHSA-2026:18134 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:10108 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- WID-SEC-2026-0421 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
- SSA-457936 SSA-457936: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1.7 Siemens ProductCERT · Nov 10, 2026
- USN-8243-1 linux-azure-5.15 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8203-1 linux-oracle, linux-oracle-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8188-1 linux-hwe-5.15 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8152-1 linux-oem-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8163-1 linux-azure-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8164-1 linux-intel-iot-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8159-1 linux, linux-aws, linux-aws-5.15, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-ibm, linux-ibm-5.15, linux-intel-iotg, linux-intel-iotg-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-nvidia-tegra, linux-nvidia-tegra-igx, linux-oracle, linux-oracle-5.15, linux-raspi, linux-xilinx-zynqmp vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8165-1 linux-azure-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8163-2 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8162-1 linux-nvidia-tegra-5.15 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8149-3 linux-azure, linux-azure-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8148-6 linux-azure, linux-azure-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8148-4 linux-realtime-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8159-3 linux-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8159-2 linux-fips, linux-aws-fips, linux-gcp-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8148-1 linux, linux-aws, linux-gcp, linux-gke, linux-gkeop, linux-ibm, linux-lowlatency, linux-nvidia, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8148-3 linux-realtime, linux-realtime-6.8, linux-raspi-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8149-1 linux, linux-aws, linux-aws-6.17, linux-gcp, linux-gcp-6.17, linux-hwe-6.17, linux-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8148-2 linux-fips, linux-aws-fips, linux-gcp-fips vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8148-5 linux-aws-6.8, linux-gcp-6.8, linux-hwe-6.8, linux-ibm-6.8, linux-lowlatency-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8149-2 linux-oracle, linux-oracle-6.17, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- USN-8148-7 linux-nvidia-lowlatency, linux-nvidia-tegra vulnerabilities Ubuntu Security Notices (USN) · Nov 4, 2026
- ALSA-2026:18134 Moderate: kernel security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:6570 Moderate: kernel security update AlmaLinux Security Advisories · Oct 29, 2026
- ICSA-26-295-11 Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP CISA ICS & IT advisories · Oct 22, 2026
- RHSA-2026:62641 Red Hat Security Advisory: kpatch-patch-5_14_0-570_116_1, kpatch-patch-5_14_0-570_17_1, kpatch-patch-5_14_0-570_39_1, kpatch-patch-5_14_0-570_66_1, and kpatch-patch-5_14_0-570_94_1 security update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- RHSA-2026:62639 Red Hat Security Advisory: kpatch-patch-5_14_0-427_100_1, kpatch-patch-5_14_0-427_113_1, kpatch-patch-5_14_0-427_126_1, kpatch-patch-5_14_0-427_68_2, and kpatch-patch-5_14_0-427_84_1 security update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- SSA-019113 SSA-019113: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1.6 Siemens ProductCERT · Oct 13, 2026
- SSA-082556 SSA-082556: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1.5 Siemens ProductCERT · Oct 13, 2026
- RHSA-2026:9112 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 6, 2026
- RHSA-2026:6570 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 6, 2026
- RHSA-2026:10996 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 6, 2026
- LSN-0119-1 Kernel Live Patch Security Notice Ubuntu Security Notices (USN) · Sep 30, 2026
- USN-8261-1 linux-xilinx vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- ICSA-26-209-04 Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP CISA ICS & IT advisories · Jul 28, 2026
- ELSA-2026-18134 Moderate: kernel security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jul 20, 2026
- SUSE-SU-2026:20873-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Jul 9, 2026
- ICSA-26-188-05 Siemens SINEC OS CISA ICS & IT advisories · Jul 7, 2026
- ELSA-2026-50372 Important: Unbreakable Enterprise kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jul 2, 2026
- SSA-253495 SSA-253495: Multiple Vulnerabilities in SINEC OS before V4.0 Siemens ProductCERT · Jun 2, 2026
- ALAS2023-2026-1487 Important: kernel6.12 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · May 9, 2026
- SUSE-SU-2026:21221-1 Security update for the Linux Kernel (Live Patch 2 for SUSE Linux Enterprise 16) SUSE / openSUSE Security Updates · Apr 22, 2026
- SUSE-SU-2026:21220-1 Security update for the Linux Kernel (Live Patch 3 for SUSE Linux Enterprise 16) SUSE / openSUSE Security Updates · Apr 22, 2026
- SUSE-SU-2026:21218-1 Security update for the Linux Kernel (Live Patch 5 for SUSE Linux Enterprise 16) SUSE / openSUSE Security Updates · Apr 22, 2026
- SUSE-SU-2026:21219-1 Security update for the Linux Kernel (Live Patch 1 for SUSE Linux Enterprise 16) SUSE / openSUSE Security Updates · Apr 22, 2026
- SUSE-SU-2026:21217-1 Security update for the Linux Kernel (Live Patch 0 for SUSE Linux Enterprise 16) SUSE / openSUSE Security Updates · Apr 22, 2026
References
- https://git.kernel.org/stable/c/8c760ba4e36c750379d13569f23f5a6e185333f5
- https://git.kernel.org/stable/c/b9b6573421de51829f7ec1cce76d85f5f6fbbd7f
- https://git.kernel.org/stable/c/42c574c1504aa089a0a142e4c13859327570473d
- https://git.kernel.org/stable/c/1444ff890b4653add12f734ffeffc173d42862dd
- https://git.kernel.org/stable/c/8b68a45f9722f2babe9e7bad00aa74638addf081
- https://git.kernel.org/stable/c/f41c5d151078c5348271ffaf8e7410d96f2d82f8