Description
In the Linux kernel, the following vulnerability has been resolved:
ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions
While running the self-tests on a KASAN enabled kernel, I observed a
slab-out-of-bounds splat very similar to the one reported in
commit 821bbf79fe46 ("ipv6: Fix KASAN: slab-out-of-bounds Read in
fib6_nh_flush_exceptions").
We additionally need to take care of fib6_metrics initialization
failure when the caller provides an nh.
The fix is similar, explicitly free the route instead of calling
fib6_info_release on a half-initialized object.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 5.3 | 5.4.136 |
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 | 5.14.6-1 | — |
| Debian 13 | linux | 5.14.6-1 | — |
| Debian 12 | linux | 5.14.6-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +22 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-88.99 | — |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1057.60 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1059.62 | — |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1019.22 | — |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1053.57 | — |
| Ubuntu 20.04 LTS | linux-gke +26 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1024.25 | — |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1005.6 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1047.49 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1055.59 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1044.48 | — |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1057.60~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1059.62~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1053.57~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-87.98~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1055.59~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1044.48~18.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 2 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-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-fips | 5.4.0-1034.40 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1067.71~20.04.1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | kernel-64kb +6 | 5.3.18-150300.59.170.1 | SUSE-SU-2024:2948-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-150300.59.170.1.150300.18.100.1 | SUSE-SU-2024:2948-1 |
| SLES 15 SP3 | kernel-docs | 5.3.18-150300.59.170.2 | SUSE-SU-2024:2948-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-150200.24.200.1.150200.9.103.1 | SUSE-SU-2024:2923-1 |
| SLES 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.200.1 | SUSE-SU-2024:2923-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP3 | kernel-default-base | 5.3.18-150300.59.170.1.150300.18.100.1 | SUSE-SU-2024:2948-1 |
| SLES for SAP 15 SP3 | kernel-docs | 5.3.18-150300.59.170.2 | SUSE-SU-2024:2948-1 |
| SLES for SAP 15 SP3 | kernel-syms +4 | 5.3.18-150300.59.170.1 | SUSE-SU-2024:2948-1 |
| SLES for SAP 15 SP2 | kernel-default-base | 5.3.18-150200.24.200.1.150200.9.103.1 | SUSE-SU-2024:2923-1 |
| SLES for SAP 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.200.1 | SUSE-SU-2024:2923-1 |
| SLE Micro 5.2 | kernel-default | 5.3.18-150300.59.170.1 | SUSE-SU-2024:2948-1 |
| SLE Micro 5.2 | kernel-default-base | 5.3.18-150300.59.170.1.150300.18.100.1 | SUSE-SU-2024:2948-1 |
| SLE Micro 5.2 | kernel-rt +1 | 5.3.18-150300.178.1 | SUSE-SU-2024:2893-1 |
| SLE Micro 5.1 | kernel-default | 5.3.18-150300.59.170.1 | SUSE-SU-2024:2948-1 |
| SLE Micro 5.1 | kernel-default-base | 5.3.18-150300.59.170.1.150300.18.100.1 | SUSE-SU-2024:2948-1 |
| SLE Micro 5.1 | kernel-rt +1 | 5.3.18-150300.178.1 | SUSE-SU-2024:2893-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-150300.59.170.1 | SUSE-SU-2024:2948-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_36 | 14-150300.2.1 | SUSE-SU-2024:3690-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_41 | 11-150300.2.1 | SUSE-SU-2024:3648-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_42 | 8-150300.7.6.1 | SUSE-SU-2025:0244-1, SUSE-SU-2025:0101-1, SUSE-SU-2024:4256-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_43 | 7-150300.7.6.1 | SUSE-SU-2025:0240-1, SUSE-SU-2025:0106-1, SUSE-SU-2024:4264-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_44 | 6-150300.7.6.1 | SUSE-SU-2025:0238-1, SUSE-SU-2025:0137-1, SUSE-SU-2024:4180-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_45 | 3-150300.7.6.1 | SUSE-SU-2025:0239-1, SUSE-SU-2025:0131-1, SUSE-SU-2024:4246-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_46 | 2-150300.7.6.1 | SUSE-SU-2025:0243-1, SUSE-SU-2025:0105-1, SUSE-SU-2024:4161-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_47 | 1-150300.7.3.1 | SUSE-SU-2024:2948-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-150200.24.200.1 | SUSE-SU-2024:2923-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_41 +1 | 14-150200.2.1 | SUSE-SU-2024:3690-1, SUSE-SU-2024:3648-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_45 | 10-150200.2.1 | SUSE-SU-2024:3641-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_46 | 8-150200.5.6.1 | SUSE-SU-2024:4242-1, SUSE-SU-2024:3803-1, SUSE-SU-2024:3642-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_47 | 7-150200.5.6.1 | SUSE-SU-2024:4263-1, SUSE-SU-2024:3796-1, SUSE-SU-2024:3649-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_48 | 6-150200.5.6.1 | SUSE-SU-2024:4250-1, SUSE-SU-2024:3849-1, SUSE-SU-2024:3685-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_49 | 3-150200.5.6.1 | SUSE-SU-2024:4231-1, SUSE-SU-2024:3800-1, SUSE-SU-2024:3676-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_50 | 2-150200.5.6.1 | SUSE-SU-2024:4248-1, SUSE-SU-2024:3768-1, SUSE-SU-2024:3704-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_51 | 1-150200.5.3.1 | SUSE-SU-2024:2923-1 |
| SLE HPC 15 SP3 | kernel-64kb +5 | 5.3.18-150300.59.170.1 | SUSE-SU-2024:2948-1 |
| SLE HPC 15 SP3 | kernel-default-base | 5.3.18-150300.59.170.1.150300.18.100.1 | SUSE-SU-2024:2948-1 |
| SLE HPC 15 SP3 | kernel-docs | 5.3.18-150300.59.170.2 | SUSE-SU-2024:2948-1 |
| SLE HPC 15 SP2 | kernel-default-base | 5.3.18-150200.24.200.1.150200.9.103.1 | SUSE-SU-2024:2923-1 |
| SLE HPC 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.200.1 | SUSE-SU-2024:2923-1 |
| SUSE Enterprise Storage 7.1 | kernel-64kb +5 | 5.3.18-150300.59.170.1 | SUSE-SU-2024:2948-1 |
| SUSE Enterprise Storage 7.1 | kernel-default-base | 5.3.18-150300.59.170.1.150300.18.100.1 | SUSE-SU-2024:2948-1 |
| SUSE Enterprise Storage 7.1 | kernel-docs | 5.3.18-150300.59.170.2 | SUSE-SU-2024:2948-1 |
Advisories 44
- SUSE-SU-2025:0101-1 Security update for the Linux Kernel (Live Patch 42 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3661-1 Security update for the Linux Kernel (Live Patch 45 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3800-1 Security update for the Linux Kernel (Live Patch 49 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:4231-1 Security update for the Linux Kernel (Live Patch 49 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3642-1 Security update for the Linux Kernel (Live Patch 46 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3648-1 Security update for the Linux Kernel (Live Patch 41 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3649-1 Security update for the Linux Kernel (Live Patch 47 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3774-1 Security update for the Linux Kernel (Live Patch 45 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3651-1 Security update for the Linux Kernel (Live Patch 42 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0137-1 Security update for the Linux Kernel (Live Patch 44 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3676-1 Security update for the Linux Kernel (Live Patch 49 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3849-1 Security update for the Linux Kernel (Live Patch 48 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3798-1 Security update for the Linux Kernel (Live Patch 42 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3685-1 Security update for the Linux Kernel (Live Patch 44 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3690-1 Security update for the Linux Kernel (Live Patch 36 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3652-1 Security update for the Linux Kernel (Live Patch 43 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2923-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:4161-1 Security update for the Linux Kernel (Live Patch 46 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:4256-1 Security update for the Linux Kernel (Live Patch 42 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:4242-1 Security update for the Linux Kernel (Live Patch 46 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2893-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3796-1 Security update for the Linux Kernel (Live Patch 47 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0106-1 Security update for the Linux Kernel (Live Patch 43 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3854-1 Security update for the Linux Kernel (Live Patch 44 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3768-1 Security update for the Linux Kernel (Live Patch 50 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:4264-1 Security update for the Linux Kernel (Live Patch 43 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3779-1 Security update for the Linux Kernel (Live Patch 46 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0240-1 Security update for the Linux Kernel (Live Patch 43 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0243-1 Security update for the Linux Kernel (Live Patch 46 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:4248-1 Security update for the Linux Kernel (Live Patch 50 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:4250-1 Security update for the Linux Kernel (Live Patch 48 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:4246-1 Security update for the Linux Kernel (Live Patch 45 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3704-1 Security update for the Linux Kernel (Live Patch 46 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:4263-1 Security update for the Linux Kernel (Live Patch 47 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0239-1 Security update for the Linux Kernel (Live Patch 45 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:4180-1 Security update for the Linux Kernel (Live Patch 44 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3814-1 Security update for the Linux Kernel (Live Patch 43 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0131-1 Security update for the Linux Kernel (Live Patch 45 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3641-1 Security update for the Linux Kernel (Live Patch 45 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0244-1 Security update for the Linux Kernel (Live Patch 42 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0238-1 Security update for the Linux Kernel (Live Patch 44 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0105-1 Security update for the Linux Kernel (Live Patch 46 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3803-1 Security update for the Linux Kernel (Live Patch 46 for SLE 15 SP2) SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2024:2948-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025