Description
In the Linux kernel, the following vulnerability has been resolved:
netlink: prevent potential spectre v1 gadgets
Most netlink attributes are parsed and validated from
__nla_validate_parse() or validate_nla()
u16 type = nla_type(nla);
if (type == 0 || type > maxtype) {
/* error or continue */
}
@type is then used as an array index and can be used
as a Spectre v1 gadget.
array_index_nospec() can be used to prevent leaking
content of kernel memory to malicious users.
This should take care of vast majority of netlink uses,
but an audit is needed to take care of others where
validation is not yet centralized in core netlink functions.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 2.6.15 | 5.4.231 |
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 | 6.1.11-1 | — |
| Debian 13 | linux | 6.1.11-1 | — |
| Debian 12 | linux | 6.1.11-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1015.17 | — |
| Ubuntu 24.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-70.77 | — |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1034.38 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1036.43 | — |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1036.43.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1032.40 | — |
| Ubuntu 22.04 LTS | linux-gke +1 | 5.15.0-1031.36 | — |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1018.23 | — |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1028.31 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1028.33 | — |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1023.23 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1033.39 | — |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1027.29 | — |
| Ubuntu 22.04 LTS | linux-riscv +31 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-147.164 | — |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1100.108 | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1034.38~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1106.112 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1036.43~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1062.68 | — |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1103.112 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1032.40~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-70.77~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1047.52 | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1030.35~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-iot | 5.4.0-1017.18 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1089.95 | — |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1014.14~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1099.108 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1033.39~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1083.94 | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1031.35~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-xilinx-zynqmp | 5.4.0-1024.28 | — |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1100.108~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1106.112~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1103.112~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-147.164~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-ibm-5.4 | 5.4.0-1047.52~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1099.108~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1083.94~18.04.1 | — |
Show 11 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 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1024.29 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1036.39 | — |
| 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 | 5.4.0-1100.108+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1106.112+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1075.84 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1103.112+fips1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro 18.04 LTS | linux +5 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | linux +7 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux +3 | No fix yet | — |
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 15 SP4 | kernel-64kb +6 | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SLES 15 SP3 | kernel-64kb +7 | 5.3.18-150300.59.201.1 | SUSE-SU-2025:1263-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-150300.59.201.1.150300.18.120.1 | SUSE-SU-2025:1263-1 |
| SLES 12 SP5 | kernel-syms +2 | 4.12.14-122.255.1 | SUSE-SU-2025:1293-1 |
| SLES 11 SP4 | kernel-ec2 +5 | 3.0.101-108.183.1 | SUSE-SU-2025:02099-1 |
Show 18 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 |
| SLES for SAP 15 SP4 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SLES for SAP 15 SP4 | kernel-docs +4 | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SLES for SAP 15 SP3 | kernel-default-base | 5.3.18-150300.59.201.1.150300.18.120.1 | SUSE-SU-2025:1263-1 |
| SLES for SAP 15 SP3 | kernel-docs +5 | 5.3.18-150300.59.201.1 | SUSE-SU-2025:1263-1 |
| 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 Micro 5.4 | kernel-default | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SLE Micro 5.4 | kernel-rt +1 | 5.14.21-150400.15.115.1 | SUSE-SU-2025:1183-1 |
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SLE Micro 5.3 | kernel-rt +1 | 5.14.21-150400.15.115.1 | SUSE-SU-2025:1183-1 |
| SLE Micro 5.2 | kernel-default | 5.3.18-150300.59.201.1 | SUSE-SU-2025:1263-1 |
| SLE Micro 5.2 | kernel-default-base | 5.3.18-150300.59.201.1.150300.18.120.1 | SUSE-SU-2025:1263-1 |
| SLE Micro 5.2 | kernel-rt +1 | 5.3.18-150300.205.1 | SUSE-SU-2025:1194-1 |
| SLE Micro 5.1 | kernel-default | 5.3.18-150300.59.201.1 | SUSE-SU-2025:1263-1 |
| SLE Micro 5.1 | kernel-default-base | 5.3.18-150300.59.201.1.150300.18.120.1 | SUSE-SU-2025:1263-1 |
| SLE Micro 5.1 | kernel-rt +1 | 5.3.18-150300.205.1 | SUSE-SU-2025:1194-1 |
| 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 15 SP4 | kernel-default | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_39 | 1-150400.9.3.1 | SUSE-SU-2025:1195-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-150300.59.201.1 | SUSE-SU-2025:1263-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_56 | 1-150300.7.3.1 | SUSE-SU-2025:1263-1 |
| 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 |
| SLE HPC 15 SP4 | kernel-64kb +5 | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SLE HPC 15 SP4 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SLE HPC 15 SP3 | kernel-64kb +6 | 5.3.18-150300.59.201.1 | SUSE-SU-2025:1263-1 |
| SLE HPC 15 SP3 | kernel-default-base | 5.3.18-150300.59.201.1.150300.18.120.1 | SUSE-SU-2025:1263-1 |
| SUSE Manager Server 4.3 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SUSE Manager Server 4.3 | kernel-syms +3 | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SUSE Manager Proxy 4.3 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SUSE Manager Proxy 4.3 | kernel-syms +2 | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SUSE Enterprise Storage 7.1 | kernel-64kb +6 | 5.3.18-150300.59.201.1 | SUSE-SU-2025:1263-1 |
| SUSE Enterprise Storage 7.1 | kernel-default-base | 5.3.18-150300.59.201.1.150300.18.120.1 | SUSE-SU-2025:1263-1 |
Advisories 9
- WID-SEC-2025-0649 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 3, 2026
- SUSE-SU-2025:02099-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1194-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 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-2025:1183-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1195-1 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
- SUSE-SU-2025:1263-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Apr 16, 2025
References
- https://git.kernel.org/stable/c/3e5082b1c66c7783fbcd79b5b178573230e528ff
- https://git.kernel.org/stable/c/539ca5dcbc91134bbe2c45677811c31d8b030d2d
- https://git.kernel.org/stable/c/41b74e95f297ac360ca7ed6bf200100717cb6c45
- https://git.kernel.org/stable/c/992e4ff7116a77968039277b5d6aaa535c2f2184
- https://git.kernel.org/stable/c/f0950402e8c76e7dcb08563f1b4e8000fbc62455