Description
In the Linux kernel, the following vulnerability has been resolved:
icmp: Fix data-races around sysctl.
While reading icmp sysctl variables, they can be changed concurrently.
So, we need to add READ_ONCE() to avoid data-races.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 3.18 | 4.9.324 |
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 | 5.18.14-1 | — |
| Debian 13 | linux | 5.18.14-1 | — |
| Debian 12 | linux | 5.18.14-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-50.56 | — |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1021.25 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1021.26 | — |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1024.30.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1019.25 | — |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1017.20 | — |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1004.6 | — |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1015.17 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1017.22 | — |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1019.23 | — |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1015.15 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1019.24 | — |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1016.18 | — |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-128.144 | — |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1086.93 | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1021.25~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1094.100 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1021.26~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1047.52 | — |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1090.98 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1021.28~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-50.56~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1034.38 | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1017.22~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-iot | 5.4.0-1005.7 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1076.81 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1084.92 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1019.24~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1071.81 | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1022.26~20.04.1 | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-194.205 | — |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1142.154 | — |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1086.93~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1153.168 | — |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1094.100~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1137.153 | — |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1092.101~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-128.144~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-ibm-5.4 | 5.4.0-1034.38~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1128.133 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1107.118 | — |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1084.92~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1071.81~18.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1022.22 | — |
| 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 | 5.4.0-1086.93+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1094.100+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1062.70 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1092.101+fips1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2081.87 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2062.68 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1099.110 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | 4.15.0-2047.52 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro 16.04 LTS | linux +2 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1142.154~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1153.168~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1137.153~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-194.205~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1107.118~16.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux-aws +1 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1153.168~14.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | bpftool | 7.0.0-284.11.1.el9_2 | RHSA-2023:2458 |
| RHEL 9 | perf +48 | 5.14.0-284.11.1.el9_2 | RHSA-2023:2458 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.100.1.150500.6.47.1 | SUSE-SU-2025:1241-1 |
| SLES 12 SP5 | kernel-syms +2 | 4.12.14-122.255.1 | SUSE-SU-2025:1293-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP5 | kernel-default-base | 5.14.21-150500.55.100.1.150500.6.47.1 | SUSE-SU-2025:1241-1 |
| SLES for SAP 15 SP5 | kernel-docs +4 | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.100.1.150500.6.47.1 | SUSE-SU-2025:1241-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.91.1 | SUSE-SU-2025:1176-1 |
| SLE Micro 5.5 | kernel-source +1 | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_25 | 1-150500.11.3.1 | SUSE-SU-2025:1241-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.255.1 | SUSE-SU-2025:1293-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_67 | 1-8.5.1 | SUSE-SU-2025:1293-1 |
| SLE HPC 15 SP5 | kernel-64kb +5 | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1 |
| SLE HPC 15 SP5 | kernel-default-base | 5.14.21-150500.55.100.1.150500.6.47.1 | SUSE-SU-2025:1241-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | kernel-livepatch-4.14.290-217.505 | 1.0-0.amzn2 | ALAS2-2025-2790 |
| Amazon Linux 2 | perf +8 | 4.14.290-217.505.amzn2 | ALAS2-2025-2790 |
Advisories 5
- RHSA-2023:2458 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- SUSE-SU-2025:1176-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1241-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1293-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2-2025-2790 Important: kernel security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · May 19, 2025
References
- https://git.kernel.org/stable/c/1740e5922fbb705637ae9fa5203db132fc45f9f6
- https://git.kernel.org/stable/c/53ecd09ef2fb35fa69667ae8e414ef6b00fd3bf6
- https://git.kernel.org/stable/c/edeec63b13c252193d626c2a48d7a2f0e7016dc2
- https://git.kernel.org/stable/c/0cba7ca667ceb06934746ddd9833a25847bde81d
- https://git.kernel.org/stable/c/e088ceb73c24ab4774da391d54a6426f4bfaefce
- https://git.kernel.org/stable/c/e2828e8c605853f71267825c9415437c0a93e4f2
- https://git.kernel.org/stable/c/798c2cf57c63ab39c8aac24d6a3d50f4fa5eeb06
- https://git.kernel.org/stable/c/48d7ee321ea5182c6a70782aa186422a70e67e22