Description
In the Linux kernel, the following vulnerability has been resolved:
netfilter: ipset: Fix race between namespace cleanup and gc in the list:set type
Lion Ackermann reported that there is a race condition between namespace cleanup
in ipset and the garbage collection of the list:set type. The namespace
cleanup can destroy the list:set type of sets while the gc of the set type is
waiting to run in rcu cleanup. The latter uses data from the destroyed set which
thus leads use after free. The patch contains the following parts:
- When destroying all sets, first remove the garbage collectors, then wait
if needed and then destroy the sets.
- Fix the badly ordered "wait then remove gc" for the destroy a single set
case.
- Fix the missing rcu locking in the list:set type in the userspace test
case.
- Use proper RCU list handlings in the list:set type.
The patch depends on c1193d9bbbd3 (netfilter: ipset: Add list flush to cancel_gc).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 5.4.269 – < 5.4.279, 5.10.210 – < 5.10.221, 5.15.149 – < 5.15.162, 6.1.79 – < 6.1.95, 6.6.18 – < 6.6.35, 6.7.6 – < 6.8, 6.8 | 5.4.279 |
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 | 6.9.7-1 | — |
| Debian 13 | linux | 6.9.7-1 | — |
| Debian 12 | linux | 6.1.99-1 | DSA-5731-1 |
| Debian 11 | linux | 5.10.221-1 | DSA-5730-1 |
| Debian 11 | linux-6.1 | 6.1.119-1~deb11u1 | DLA-4008-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1052.54 | — |
| Ubuntu 24.04 LTS | linux | 6.8.0-44.44 | USN-6999-1 |
| Ubuntu 24.04 LTS | linux-aws | 6.8.0-1015.16 | USN-6999-1 |
| Ubuntu 24.04 LTS | linux-gcp +1 | 6.8.0-1014.16 | USN-7004-1, USN-6999-1 |
| Ubuntu 24.04 LTS | linux-gke | 6.8.0-1010.13 | USN-6999-1 |
| Ubuntu 24.04 LTS | linux-ibm +2 | 6.8.0-1012.12 | USN-6999-1 |
| Ubuntu 24.04 LTS | linux-nvidia | 6.8.0-1013.14 | USN-7005-1 |
| Ubuntu 24.04 LTS | linux-nvidia-lowlatency | 6.8.0-1013.14.1 | USN-7005-1 |
| Ubuntu 24.04 LTS | linux-raspi | 6.8.0-1011.12 | USN-6999-2 |
| Ubuntu 24.04 LTS | linux-riscv +1 | 6.8.0-44.44.1 | USN-6999-1 |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-121.131 | USN-7007-3, USN-7007-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1069.75 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-aws-6.8 | 6.8.0-1015.16~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1072.81 | USN-7009-1 |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1072.81.1 | USN-7009-1 |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1068.76 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-gcp-6.8 +1 | 6.8.0-1014.16~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1066.72 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1052.59 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-hwe-6.8 | 6.8.0-45.45~22.04.1 | USN-7029-1 |
| Ubuntu 22.04 LTS | linux-ibm +1 | 5.15.0-1062.65 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1064.70 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1066.71 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1064.65 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-nvidia-6.8 | 6.8.0-1013.14~22.04.1 | USN-7005-2 |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1067.73 | USN-7007-1 |
| Ubuntu 22.04 LTS | linux-oracle-6.8 | 6.8.0-1012.12~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-riscv +30 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv-6.8 +1 | 6.8.0-44.44.1~22.04.1 | USN-7008-1 |
| Ubuntu 22.04 LTS | linux-xilinx-zynqmp | 5.15.0-1035.39 | USN-7019-1 |
| Ubuntu 20.04 LTS | linux | 5.4.0-195.215 | USN-7003-1 |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1132.142 | USN-7003-1 |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1069.75~20.04.1 | USN-7007-1 |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1137.144 | USN-7003-1 |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1072.81~20.04.1 | USN-7009-1 |
| Ubuntu 20.04 LTS | linux-azure-fde-5.15 | 5.15.0-1072.81~20.04.1.1 | USN-7009-2 |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1092.99 | USN-7003-1 |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1136.145 | USN-7003-1 |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1068.76~20.04.1 | USN-7007-1 |
| Ubuntu 20.04 LTS | linux-gke +26 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1099.103 | USN-7003-1 |
| Ubuntu 20.04 LTS | linux-gkeop-5.15 | 5.15.0-1052.59~20.04.1 | USN-7007-1 |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-121.131~20.04.1 | USN-7007-3, USN-7007-1 |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1079.84 | USN-7003-1 |
| Ubuntu 20.04 LTS | linux-ibm-5.15 | 5.15.0-1062.65~20.04.1 | USN-7007-2 |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1064.70~20.04.1 | USN-7007-1 |
| Ubuntu 20.04 LTS | linux-iot | 5.4.0-1043.44 | USN-7006-1 |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1120.128 | USN-7003-1 |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1131.140 | USN-7003-1 |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1067.73~20.04.1 | USN-7007-2 |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1116.128 | USN-7003-4 |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1065.69~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-xilinx-zynqmp | 5.4.0-1051.55 | USN-7003-3 |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-raspi-realtime | 6.8.0-2010.10 | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime | 6.8.1-1008.8 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1063.65 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1070.78 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-aws-fips | 5.15.0-1069.75+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-azure-fips | 5.15.0-1072.81+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips | 5.15.0-121.131+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-gcp-fips | 5.15.0-1068.76+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1132.142+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1137.144+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1106.116 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1136.145+fips1 | — |
| Ubuntu Pro 18.04 LTS | linux-aws-5.4 | 5.4.0-1132.142~18.04.1 | USN-7003-2 |
| Ubuntu Pro 18.04 LTS | linux-azure-5.4 | 5.4.0-1137.144~18.04.1 | USN-7003-2 |
| Ubuntu Pro 18.04 LTS | linux-gcp-5.4 | 5.4.0-1136.145~18.04.1 | USN-7003-2 |
| Ubuntu Pro 18.04 LTS | linux-hwe-5.4 | 5.4.0-195.215~18.04.1 | USN-7003-2 |
| Ubuntu Pro 18.04 LTS | linux-ibm-5.4 | 5.4.0-1079.84~18.04.1 | USN-7003-2 |
| Ubuntu Pro 18.04 LTS | linux-oracle-5.4 | 5.4.0-1131.140~18.04.1 | USN-7003-2 |
| Ubuntu Pro 18.04 LTS | linux-raspi-5.4 | 5.4.0-1116.128~18.04.1 | USN-7003-5 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | bpftool | 7.4.0-503.11.1.el9_5 | RHSA-2024:9315 |
| RHEL 9 | rv +67 | 5.14.0-503.11.1.el9_5 | RHSA-2024:9315 |
| RHEL 8 | kernel-rt +12 | 4.18.0-553.27.1.rt7.368.el8_10 | RHSA-2024:8870 |
| RHEL 8 | perf +26 | 4.18.0-553.27.1.el8_10 | RHSA-2024:8856 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | kernel-rt +9 | 4.18.0-553.27.1.rt7.368.el8_10 | ALSA-2024:8870 |
| AlmaLinux 8 | perf +24 | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | kernel | 4.18.0-553.27.1.el8_10 | RLSA-2024:8856 |
| Rocky Linux 8 | kernel-rt | 4.18.0-553.27.1.rt7.368.el8_10 | RLSA-2024:8870 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.1.96-102.177 | 1.0-0.amzn2023 | ALAS2023-2025-836 |
| Amazon Linux 2023 | perf +14 | 6.1.96-102.177.amzn2023 | ALAS2023-2025-836 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | bpftool | 7.4.0-503.11.1.el9_5 | ELSA-2024-9315 |
| Oracle Linux 9 | rv +28 | 5.14.0-503.11.1.el9_5 | ELSA-2024-9315 |
| Oracle Linux 8 | kernel-uek-container +1 | 5.4.17-2136.334.6.el8 | ELSA-2024-12584 |
| Oracle Linux 8 | perf +19 | 4.18.0-553.27.1.el8_10 | ELSA-2024-8856 |
| Oracle Linux 7 | kernel-uek +4 | 5.4.17-2136.334.6.el8uek | ELSA-2024-12581 |
| Oracle Linux 7 | kernel-uek-container +1 | 5.4.17-2136.334.6.el7 | ELSA-2024-12585 |
| Oracle Linux 7 | perf +3 | 5.4.17-2136.334.6.el7uek | ELSA-2024-12581 |
Advisories 43
- WID-SEC-2024-1607 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 5, 2026
- ALSA-2024:8856 Moderate: kernel security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:8870 Moderate: kernel-rt security update AlmaLinux Security Advisories · Oct 29, 2026
- USN-7007-1 linux, linux-aws, linux-aws-5.15, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-gkeop-5.15, linux-hwe-5.15, linux-ibm, linux-intel-iotg, linux-intel-iotg-5.15, linux-kvm, linux-nvidia, linux-oracle, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-6999-1 linux, linux-aws, linux-gcp, linux-gke, linux-ibm, linux-lowlatency, linux-oem-6.8, linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7003-2 linux-aws-5.4, linux-azure-5.4, linux-gcp-5.4, linux-hwe-5.4, linux-ibm-5.4, linux-oracle-5.4 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7009-1 linux-azure, linux-azure-5.15, linux-azure-fde vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7007-3 linux-lowlatency, linux-lowlatency-hwe-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7029-1 linux-hwe-6.8 Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7005-1 linux-nvidia, linux-nvidia-lowlatency vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7006-1 linux-iot vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7005-2 linux-nvidia-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7004-1 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7008-1 linux-lowlatency-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7019-1 linux-xilinx-zynqmp vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-6999-2 linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7007-2 linux-ibm-5.15, linux-oracle-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7003-1 linux, linux-aws, linux-azure, linux-bluefield, linux-gcp, linux-gkeop, linux-ibm, linux-kvm, linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7003-5 linux-raspi-5.4 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7003-3 linux-xilinx-zynqmp vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-7003-4 linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- RHSA-2024:9315 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2024:8870 Red Hat Security Advisory: kernel-rt security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2024:8856 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- SSA-265688 SSA-265688: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 TM MFP V1.1 Siemens ProductCERT · Oct 13, 2026
- USN-7009-2 linux-azure-fde-5.15 vulnerabilities Ubuntu Security Notices (USN) · Aug 6, 2026
- ICSA-24-102-01 Siemens SIMATIC S7-1500 TM MFP CISA ICS & IT advisories · May 14, 2026
- DLA-4008-1 linux-6.1 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5731-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5730-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- ICSA-25-226-15 Siemens SINEC OS CISA ICS & IT advisories · Feb 25, 2026
- ICSA-25-226-07 Siemens Third-Party Components in SINEC OS CISA ICS & IT advisories · Feb 25, 2026
- SSA-355557 SSA-355557: Multiple Vulnerabilities in Third-Party Components in SINEC OS before V3.2 Siemens ProductCERT · Feb 24, 2026
- SSA-613116 SSA-613116: Multiple Vulnerabilities in Third-Party Components in SINEC OS before V3.1 Siemens ProductCERT · Feb 24, 2026
- RLSA-2024:8856 Moderate: kernel security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2024:8870 Moderate: kernel-rt security update Rocky Linux Security Advisories · Feb 5, 2026
- WID-SEC-2025-1293 IBM DataPower Gateway: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 3, 2025
- ALAS2023-2025-836 Important: kernel security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 2, 2025
- ELSA-2024-9315 Moderate: kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Nov 14, 2024
- ELSA-2024-8856 Moderate: kernel security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 5, 2024
- ELSA-2024-12584 Important: Unbreakable Enterprise kernel-container security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 12, 2024
- ELSA-2024-12581 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 12, 2024
- ELSA-2024-12585 Important: Unbreakable Enterprise kernel-container security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 12, 2024
References
- https://git.kernel.org/stable/c/c0761d1f1ce1d5b85b5e82bbb714df12de1aa8c3
- https://git.kernel.org/stable/c/93b53c202b51a69e42ca57f5a183f7e008e19f83
- https://git.kernel.org/stable/c/0f1bb77c6d837c9513943bc7c08f04c5cc5c6568
- https://git.kernel.org/stable/c/390b353d1a1da3e9c6c0fd14fe650d69063c95d6
- https://git.kernel.org/stable/c/2ba35b37f780c6410bb4bba9c3072596d8576702
- https://git.kernel.org/stable/c/90ae20d47de602198eb69e6cd7a3db3420abfc08
- https://git.kernel.org/stable/c/4e7aaa6b82d63e8ddcbfb56b4fd3d014ca586f10