Description
A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Linux Kernel | 2.6.19-rc1 – < unspecified | unspecified |
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 | 5.10.38-1 | — |
| Debian 13 | linux | 5.10.38-1 | — |
| Debian 12 | linux | 5.10.38-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-74.83 | — |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1049.51 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1048.50 | — |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1012.15 | — |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1044.47 | — |
| Ubuntu 20.04 LTS | linux-gke | 5.4.0-1044.46 | — |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1016.17 | — |
| Ubuntu 20.04 LTS | linux-hwe-5.8 | 5.8.0-55.62~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1040.41 | — |
| Ubuntu 20.04 LTS | linux-oem-5.10 | 5.10.0-1025.26 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1046.50 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1036.39 | — |
| Ubuntu 20.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-riscv-5.8 | 5.8.0-26.28~20.04.1 | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-144.148 | — |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1103.110 | — |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1049.51~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1115.128 | — |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1048.50~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-dell300x | 4.15.0-1022.26 | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1100.113 | — |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1044.47~18.04.2 | — |
| Ubuntu 18.04 LTS | linux-gke-5.4 | 5.4.0-1044.46~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gkeop-5.4 | 5.4.0-1016.17~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-74.83~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1092.94 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1072.80 | — |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1046.50~18.04.2 | — |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1036.39~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1086.91 | — |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1103.112 | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1069.73+fips2 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1073.76+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1067.71~20.04.1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2045.47 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2027.30 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1060.68 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1065.71 | — |
| Ubuntu Pro 20.04 LTS | linux | 5.4.0-74.83 | LSN-0083-1, LSN-0081-1, LSN-0080-1 |
| Ubuntu Pro 20.04 LTS | linux-aws | 5.4.0-1061.64 | LSN-0083-1 |
| Ubuntu Pro 20.04 LTS | linux-azure | 5.4.0-1065.68 | LSN-0083-1 |
| Ubuntu Pro 20.04 LTS | linux-gcp | 5.4.0-1044.47 | LSN-0083-1, LSN-0081-1, LSN-0080-1 |
| Ubuntu Pro 20.04 LTS | linux-gke | 5.4.0-1044.46 | LSN-0083-1, LSN-0081-1, LSN-0080-1 |
| Ubuntu Pro 20.04 LTS | linux-gkeop | 5.4.0-1016.17 | LSN-0083-1, LSN-0081-1, LSN-0080-1 |
| Ubuntu Pro 18.04 LTS | linux | 4.15.0-144.148 | LSN-0083-1, LSN-0081-1, LSN-0080-1 |
| Ubuntu Pro 18.04 LTS | linux-aws | 4.15.0-1118.125 | LSN-0083-1 |
| Ubuntu Pro 18.04 LTS | linux-gke-5.4 | 5.4.0-1044.46~18.04.1 | LSN-0083-1, LSN-0081-1, LSN-0080-1 |
| Ubuntu Pro 18.04 LTS | linux-gkeop-5.4 | 5.4.0-1016.17~18.04.1 | LSN-0083-1, LSN-0081-1, LSN-0080-1 |
| Ubuntu Pro 18.04 LTS | linux-hwe-5.4 | 5.4.0-74.83~18.04.1 | LSN-0081-1, LSN-0080-1 |
| Ubuntu Pro 18.04 LTS | linux-oem +1 | No fix yet | LSN-0083-1, LSN-0081-1, LSN-0080-1 |
| Ubuntu Pro 16.04 LTS | linux | 4.4.0-213.245 | USN-5039-1, LSN-0083-1, LSN-0081-1 |
| Ubuntu Pro 16.04 LTS | linux-aws | 4.4.0-1131.145 | USN-5039-1, LSN-0083-1 |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1103.110~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1115.128~16.04.1 | LSN-0083-1 |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1100.113~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-144.148~16.04.1 | LSN-0083-1, LSN-0081-1, LSN-0080-1 |
| Ubuntu Pro 16.04 LTS | linux-kvm | 4.4.0-1096.105 | USN-5039-1 |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1072.80~16.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux | 3.13.0-187.238 | USN-5039-1 |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1095.100 | USN-5039-1 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1115.128~14.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-213.245~14.04.1 | USN-5039-1, LSN-0081-1, LSN-0080-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | kernel-rt +12 | 4.18.0-305.12.1.rt7.84.el8_4 | RHSA-2021:3088 |
| RHEL 8 | kpatch-patch-4_18_0-305 | 1-4.el8 | RHSA-2021:3044 |
| RHEL 8 | kpatch-patch-4_18_0-305_10_2 | 1-1.el8_4 | RHSA-2021:3044 |
| RHEL 8 | kpatch-patch-4_18_0-305_3_1 | 1-3.el8_4 | RHSA-2021:3044 |
| RHEL 8 | kpatch-patch-4_18_0-305_7_1 | 1-2.el8_4 | RHSA-2021:3044 |
| RHEL 8 | perf +26 | 4.18.0-305.12.1.el8_4 | RHSA-2021:3057 |
| RHEL 7 | kernel-rt +10 | 3.10.0-1160.41.1.rt56.1181.el7 | RHSA-2021:3328 |
| RHEL 7 | kpatch-patch-3_10_0-1160 +3 | 1-8.el7 | RHSA-2021:3381 |
| RHEL 7 | kpatch-patch-3_10_0-1160_11_1 +1 | 1-7.el7 | RHSA-2021:3381 |
| RHEL 7 | kpatch-patch-3_10_0-1160_21_1 | 1-5.el7 | RHSA-2021:3381 |
| RHEL 7 | kpatch-patch-3_10_0-1160_24_1 +1 | 1-3.el7 | RHSA-2021:3381 |
| RHEL 7 | kpatch-patch-3_10_0-1160_31_1 | 1-2.el7 | RHSA-2021:3381 |
| RHEL 7 | kpatch-patch-3_10_0-1160_36_2 | 1-1.el7 | RHSA-2021:3381 |
| RHEL 7 | perf +18 | 3.10.0-1160.41.1.el7 | RHSA-2021:3327 |
| RHEL 7 | redhat-virtualization-host +1 | 4.3.18-20210903.0.el7_9 | RHSA-2021:3477 |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhev Hypervisor 4 | redhat-virtualization-host +1 | 4.4.7-20210804.0.el8_4 | RHSA-2021:3235 |
| RHEL 8.2 EUS | kernel-rt +12 | 4.18.0-193.64.1.rt13.115.el8_2 | RHSA-2021:3375 |
| RHEL 8.2 EUS | kpatch-patch-4_18_0-193_19_1 | 1-11.el8_2 | RHSA-2021:3380 |
| RHEL 8.2 EUS | kpatch-patch-4_18_0-193_28_1 +4 | 1-9.el8_2 | RHSA-2021:3380 |
| RHEL 8.2 EUS | kpatch-patch-4_18_0-193_46_1 +1 | 1-6.el8_2 | RHSA-2021:3380 |
| RHEL 8.2 EUS | kpatch-patch-4_18_0-193_51_1 | 1-3.el8_2 | RHSA-2021:3380 |
| RHEL 8.2 EUS | kpatch-patch-4_18_0-193_56_1 | 1-2.el8_2 | RHSA-2021:3380 |
| RHEL 8.2 EUS | kpatch-patch-4_18_0-193_60_2 | 1-1.el8_2 | RHSA-2021:3380 |
| RHEL 8.2 EUS | perf +26 | 4.18.0-193.64.1.el8_2 | RHSA-2021:3363 |
| RHEL 8.1 EUS | kpatch-patch-4_18_0-147_27_1 | 1-12.el8_1 | RHSA-2021:3181 |
| RHEL 8.1 EUS | kpatch-patch-4_18_0-147_32_1 +1 | 1-10.el8_1 | RHSA-2021:3181 |
| RHEL 8.1 EUS | kpatch-patch-4_18_0-147_38_1 | 1-9.el8_1 | RHSA-2021:3181 |
| RHEL 8.1 EUS | kpatch-patch-4_18_0-147_43_1 | 1-7.el8_1 | RHSA-2021:3181 |
| RHEL 8.1 EUS | kpatch-patch-4_18_0-147_44_1 | 1-6.el8_1 | RHSA-2021:3181 |
| RHEL 8.1 EUS | kpatch-patch-4_18_0-147_48_1 | 1-3.el8_1 | RHSA-2021:3181 |
| RHEL 8.1 EUS | kpatch-patch-4_18_0-147_51_1 | 1-2.el8_1 | RHSA-2021:3181 |
| RHEL 8.1 EUS | kpatch-patch-4_18_0-147_51_2 | 1-1.el8_1 | RHSA-2021:3181 |
| RHEL 8.1 EUS | perf +26 | 4.18.0-147.52.1.el8_1 | RHSA-2021:3173 |
| RHEL 7.7 TUS | perf +12 | 3.10.0-1062.56.1.el7 | RHSA-2021:3522 |
| RHEL 7.7 E4S | kpatch-patch-3_10_0-1062_36_1 +4 | 1-5.el7 | RHSA-2021:3523 |
| RHEL 7.7 E4S | kpatch-patch-3_10_0-1062_46_1 | 1-4.el7 | RHSA-2021:3523 |
| RHEL 7.7 E4S | kpatch-patch-3_10_0-1062_49_1 +1 | 1-2.el7 | RHSA-2021:3523 |
| RHEL 7.7 E4S | kpatch-patch-3_10_0-1062_52_2 | 1-1.el7 | RHSA-2021:3523 |
| RHEL 7.7 E4S | perf +14 | 3.10.0-1062.56.1.el7 | RHSA-2021:3522 |
| RHEL 7.7 AUS | perf +12 | 3.10.0-1062.56.1.el7 | RHSA-2021:3522 |
| RHEL 7.6 TUS | perf +12 | 3.10.0-957.84.1.el7 | RHSA-2021:3812 |
| RHEL 7.6 E4S | kpatch-patch-3_10_0-957_61_1 +4 | 1-6.el7 | RHSA-2021:3814 |
| RHEL 7.6 E4S | kpatch-patch-3_10_0-957_70_1 | 1-5.el7 | RHSA-2021:3814 |
| RHEL 7.6 E4S | kpatch-patch-3_10_0-957_72_1 +1 | 1-3.el7 | RHSA-2021:3814 |
| RHEL 7.6 E4S | kpatch-patch-3_10_0-957_78_2 | 1-2.el7 | RHSA-2021:3814 |
| RHEL 7.6 E4S | kpatch-patch-3_10_0-957_80_1 | 1-1.el7 | RHSA-2021:3814 |
| RHEL 7.6 E4S | perf +13 | 3.10.0-957.84.1.el7 | RHSA-2021:3812 |
| RHEL 7.6 AUS | perf +12 | 3.10.0-957.84.1.el7 | RHSA-2021:3812 |
| RHEL 7.4 AUS | perf +11 | 3.10.0-693.94.1.el7 | RHSA-2021:3725 |
| RHEL 7.3 AUS | perf +11 | 3.10.0-514.92.1.el7 | RHSA-2021:3321 |
| RHEL 7.2 AUS | perf +11 | 3.10.0-327.100.1.el7 | RHSA-2021:3399 |
| RHEL 6 ELS | perf +13 | 2.6.32-754.58.1.el6 | RHSA-2025:17733 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | kernel-tools-libs-devel | 4.18.0-305.12.1.el8_4 | ALSA-2021:3057 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | kernel | 4.18.0-305.12.1.el8_4 | RLSA-2021:3057 |
| Rocky Linux 8 | kernel-rt | 4.18.0-305.12.1.rt7.84.el8_4 | RLSA-2021:3088 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | kernel-64kb +7 | 5.3.18-59.16.1 | SUSE-SU-2021:2415-1 |
| SLES 15 SP3 | kernel-azure +2 | 5.3.18-38.14.1 | SUSE-SU-2021:2409-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-59.16.1.18.8.1 | SUSE-SU-2021:2415-1 |
| SLES 15 SP2 | kernel-azure +2 | 5.3.18-18.58.1 | SUSE-SU-2021:2408-1 |
| SLES 15 SP2 | kernel-default +2 | 5.3.18-24.75.3 | SUSE-SU-2021:2438-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-24.75.3.9.34.3 | SUSE-SU-2021:2438-1 |
| SLES 15 SP2 | kernel-docs +1 | 5.3.18-24.75.2 | SUSE-SU-2021:2438-1 |
| SLES 15 SP2 | kernel-syms | 5.3.18-24.75.1 | SUSE-SU-2021:2438-1 |
| SLES 15 SP1 | kernel-docs +5 | 4.12.14-197.99.1 | SUSE-SU-2021:2427-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-150.75.1 | SUSE-SU-2021:2421-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.65.1 | SUSE-SU-2021:2407-1 |
| SLES 12 SP5 | kernel-docs +4 | 4.12.14-122.80.1 | SUSE-SU-2021:2416-1 |
Show 28 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | kernel-syms +2 | 4.12.14-95.80.1 | SUSE-SU-2021:2422-1 |
| SLES 12 SP3 | kernel-syms +2 | 4.4.180-94.147.1 | SUSE-SU-2021:2451-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_40 | 1-4.3.1 | SUSE-SU-2021:2451-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.158.1 | SUSE-SU-2021:2406-1 |
| SLES for SAP 15 SP1 | kernel-docs +4 | 4.12.14-197.99.1 | SUSE-SU-2021:2427-1 |
| SLES for SAP 15 | kernel-docs +5 | 4.12.14-150.75.1 | SUSE-SU-2021:2421-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.65.1 | SUSE-SU-2021:2407-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.80.1 | SUSE-SU-2021:2416-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.80.1 | SUSE-SU-2021:2422-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.180-94.147.1 | SUSE-SU-2021:2451-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_40 | 1-4.3.1 | SUSE-SU-2021:2451-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.54.1 | SUSE-SU-2021:2643-1 |
| SLE Micro 5.0 | kernel-default | 5.3.18-24.75.3 | SUSE-SU-2021:2438-1 |
| SLE Micro 5.0 | kernel-default-base | 5.3.18-24.75.3.9.34.3 | SUSE-SU-2021:2438-1 |
| SLE Micro 5.0 | kernel-rt | 5.3.18-45.3 | SUSE-SU-2021:2599-2 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-59.16.1 | SUSE-SU-2021:2415-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_0 | 4-3.1 | SUSE-SU-2021:2487-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_1 +2 | 2-2.1 | SUSE-SU-2021:2559-1, SUSE-SU-2021:2487-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_4 | 1-7.3.1 | SUSE-SU-2021:2415-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-24.75.3 | SUSE-SU-2021:2438-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_0 | 14-5.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_1 | 13-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_10 | 8-2.2 | SUSE-SU-2021:2542-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_11 | 7-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_12 +1 | 4-2.1 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_14 +2 | 2-2.1 | SUSE-SU-2021:2577-1, SUSE-SU-2021:2538-1, SUSE-SU-2021:2487-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_17 | 1-5.3.3 | SUSE-SU-2021:2438-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_2 +2 | 12-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_5 +2 | 10-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_8 +1 | 9-2.2 | SUSE-SU-2021:2542-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.99.1 | SUSE-SU-2021:2427-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_13 +1 | 13-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_15 | 12-2.2 | SUSE-SU-2021:2560-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_16 | 11-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_17 +1 | 10-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_19 +2 | 9-2.2 | SUSE-SU-2021:2584-1, SUSE-SU-2021:2542-1, SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_22 | 8-2.2 | SUSE-SU-2021:2560-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_23 | 7-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_24 | 4-2.1 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_25 | 3-2.1 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_26 | 1-3.3.3 | SUSE-SU-2021:2427-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150.75.1 | SUSE-SU-2021:2421-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_19 | 13-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_20 | 12-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_21 | 10-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_22 | 8-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_23 | 7-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_24 | 4-2.1 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_25 | 1-1.3.1 | SUSE-SU-2021:2421-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.80.1 | SUSE-SU-2021:2416-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_10 | 13-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_11 +1 | 11-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_13 +1 | 9-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_15 | 8-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_16 | 7-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_17 | 5-2.1 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_18 | 4-2.1 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_19 +1 | 2-2.1 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_21 | 1-8.3.1 | SUSE-SU-2021:2416-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_7 +1 | 15-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_9 | 14-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 12 SP4 | kernel-default | 4.12.14-95.80.1 | SUSE-SU-2021:2422-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_15 | 13-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_16 | 12-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_17 | 9-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_18 | 8-2.2 | SUSE-SU-2021:2584-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_19 | 7-2.2 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_20 | 4-2.1 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_21 | 3-2.1 | SUSE-SU-2021:2538-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_22 | 1-6.3.1 | SUSE-SU-2021:2422-1 |
| SLE HPC 15 SP1 | kernel-docs +4 | 4.12.14-197.99.1 | SUSE-SU-2021:2427-1 |
| SLE HPC 15 | kernel-docs +5 | 4.12.14-150.75.1 | SUSE-SU-2021:2421-1 |
| SUSE Real Time Module 15 SP2 | kernel-rt +2 | 5.3.18-45.3 | SUSE-SU-2021:2599-1 |
| SUSE Real Time Module 15 SP2 | kernel-syms-rt | 5.3.18-45.2 | SUSE-SU-2021:2599-1 |
| SUSE OpenStack Cloud Crowbar 9 | kernel-syms +2 | 4.12.14-95.80.1 | SUSE-SU-2021:2422-1 |
| SUSE OpenStack Cloud Crowbar 8 | kernel-syms +2 | 4.4.180-94.147.1 | SUSE-SU-2021:2451-1 |
| SUSE OpenStack Cloud Crowbar 8 | kgraft-patch-SLE12-SP3_Update_40 | 1-4.3.1 | SUSE-SU-2021:2451-1 |
| SUSE OpenStack Cloud 9 | kernel-syms +2 | 4.12.14-95.80.1 | SUSE-SU-2021:2422-1 |
| SUSE OpenStack Cloud 8 | kernel-syms +2 | 4.4.180-94.147.1 | SUSE-SU-2021:2451-1 |
| SUSE OpenStack Cloud 8 | kgraft-patch-SLE12-SP3_Update_40 | 1-4.3.1 | SUSE-SU-2021:2451-1 |
| SUSE Manager Server 4.0 | kernel-docs +5 | 4.12.14-197.99.1 | SUSE-SU-2021:2427-1 |
| SUSE Manager Retail Branch Server 4.0 | kernel-docs +4 | 4.12.14-197.99.1 | SUSE-SU-2021:2427-1 |
| SUSE Manager Proxy 4.0 | kernel-docs +4 | 4.12.14-197.99.1 | SUSE-SU-2021:2427-1 |
| SUSE HPE Helion OpenStack 8 | kernel-syms +2 | 4.4.180-94.147.1 | SUSE-SU-2021:2451-1 |
| SUSE HPE Helion OpenStack 8 | kgraft-patch-SLE12-SP3_Update_40 | 1-4.3.1 | SUSE-SU-2021:2451-1 |
| SUSE Enterprise Storage 6 | kernel-docs +4 | 4.12.14-197.99.1 | SUSE-SU-2021:2427-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | kernel-64kb +6 | 5.3.18-59.16.1 | openSUSE-SU-2021:2415-1 |
| openSUSE Leap 15.3 | kernel-azure +2 | 5.3.18-38.14.1 | openSUSE-SU-2021:2409-1 |
| openSUSE Leap 15.3 | kernel-debug +4 | 4.12.14-197.99.1 | openSUSE-SU-2021:2427-1, openSUSE-SU-2021:2415-1 |
| openSUSE Leap 15.3 | kernel-default-base | 5.3.18-59.16.1.18.8.1 | openSUSE-SU-2021:2415-1 |
| openSUSE Leap 15.2 | kernel-default-base | 5.3.18-lp152.84.1.lp152.8.38.1 | openSUSE-SU-2021:1076-1 |
| openSUSE Leap 15.2 | kernel-docs +8 | 5.3.18-lp152.84.1 | openSUSE-SU-2021:1076-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | kernel-livepatch-4.14.231-173.360 | 1.0-0.amzn2 | ALAS2-2021-1627 |
| Amazon Linux 2 | perf +8 | 4.14.231-173.360.amzn2 | ALAS2-2021-1627 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-305.12.1.el8_4 | ELSA-2021-3057 |
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.53.5.el7uek | ELSA-2021-9395 |
| Oracle Linux 7 | perf +12 | 3.10.0-1160.41.1.el7 | ELSA-2021-3327 |
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.
Metasploit 1 module
-
Netfilter x_tables Heap OOB Write Privilege Escalation
exploit/linux/local/netfilter_xtables_heap_oob_write_priv_esc
Exploit-DB 1
- Linux Kernel 2.6.19 < 5.9 - 'Netfilter Local Privilege Escalation EDB-50135 · local · Jul 15, 2021 · verified
GitHub 13 repositories · most starred shown
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veritas501/CVE-2021-22555-PipeVersion ★ 40 · Apr 5, 2022
CVE-2021-22555 exploit rewritten with pipe primitive
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xyjl-ly/CVE-2021-22555-Exploit ★ 14 · Jul 16, 2021
CVE-2021-22555 Exploit
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cgwalters/container-cve-2021-22555 ★ 4 · Jul 16, 2021
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tukru/CVE-2021-22555 ★ 3 · Aug 5, 2023
This repo hosts TUKRU's Linux Privilege Escalation exploit (CVE-2021-22555). It demonstrates gaining root privileges via a vulnerability. Tested on Ubuntu 5.8.0-48-generic and COS 5.4.89+. Use respon…
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Spydomain/CVE-2021-22555-Poc ★ 1 · Feb 2, 2026
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masjohncook/netsec-project ★ 1 · May 10, 2023
Script of Network Security Project - Attack on CVE-2021-22555
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daletoniris/CVE-2021-22555-esc-priv ★ 1 · Oct 1, 2021
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JoneyJunior/cve-2021-22555 ★ 1 · Jul 15, 2021
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letsr00t/-2021-LOCALROOT-CVE-2021-22555 ★ 0 · Feb 5, 2024
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pashayogi/CVE-2021-22555 ★ 0 · Aug 20, 2023
Linux Kernel 2.6.19 < 5.9 - 'Netfilter Local Privilege Escalation'
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 50
- ALSA-2021:3057 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2025:17733 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3812 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3814 Red Hat Security Advisory: kpatch-patch security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3725 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3522 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3523 Red Hat Security Advisory: kpatch-patch security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3477 Red Hat Security Advisory: RHV-H security update (redhat-virtualization-host) 4.3.18 Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3399 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3375 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3380 Red Hat Security Advisory: kpatch-patch security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3381 Red Hat Security Advisory: kpatch-patch security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3363 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3327 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3328 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3321 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3235 Red Hat Security Advisory: Red Hat Virtualization Host security and bug fix update [ovirt-4.4.7] Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3181 Red Hat Security Advisory: kpatch-patch security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3173 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3057 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3088 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:3044 Red Hat Security Advisory: kpatch-patch security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- WID-SEC-2025-0227 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 11, 2026
- WID-SEC-2026-2442 Oracle JD Edwards: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 21, 2026
- USN-5039-1 linux, linux-aws, linux-kvm, linux-lts-xenial vulnerability Ubuntu Security Notices (USN) · Jun 29, 2026
- LSN-0083-1 Kernel Live Patch Security Notice Ubuntu Security Notices (USN) · Jun 3, 2026
- LSN-0081-1 Kernel Live Patch Security Notice Ubuntu Security Notices (USN) · Jun 3, 2026
- LSN-0080-1 Kernel Live Patch Security Notice Ubuntu Security Notices (USN) · Jun 3, 2026
- RLSA-2021:3088 Important: kernel-rt security and bug fix update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2021:3057 Important: kernel security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2021:2451-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2409-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2538-1 Security update for the Linux Kernel (Live Patch 34 for SLE 12 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:2409-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2422-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:2415-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2487-1 Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2599-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2643-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2421-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2584-1 Security update for the Linux Kernel (Live Patch 19 for SLE 15 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2407-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2559-1 Security update for the Linux Kernel (Live Patch 2 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2416-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2542-1 Security update for the Linux Kernel (Live Patch 10 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1076-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2408-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2438-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:2427-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2406-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://github.com/google/security-research/security/advisories/GHSA-xxx5-8mvq-3528
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=9fa492cdc160cd27ce1046cb36f47d3b2b1efa21
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=b29c457a6511435960115c0f548c4360d5f4801d
- http://packetstormsecurity.com/files/163528/Linux-Kernel-Netfilter-Heap-Out-Of-Bounds-Write.html
- https://security.netapp.com/advisory/ntap-20210805-0010/
- http://packetstormsecurity.com/files/163878/Kernel-Live-Patch-Security-Notice-LSN-0080-1.html
- http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html
- http://packetstormsecurity.com/files/164437/Netfilter-x_tables-Heap-Out-Of-Bounds-Write-Privilege-Escalation.html
- http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html