Description
An issue was discovered in the Linux kernel before 5.0.19. The XFRM subsystem has a use-after-free, related to an xfrm_state_fini panic, aka CID-dbb2483b2a46.
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 | 5.2.6-1 | — |
| Debian 13 | linux | 5.2.6-1 | — |
| Debian 12 | linux | 5.2.6-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-66.75 | — |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1052.54 | — |
| Ubuntu 18.04 LTS | linux-gcp +12 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-hwe-edge | 5.3.0-19.20~18.04.2 | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1048.48 | — |
| Ubuntu 18.04 LTS | linux-oem-osp1 | 5.0.0-1020.22 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1027.30 | — |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1049.53 | — |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1066.73 | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-166.195 | — |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1096.107 | — |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1052.54~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1061.66 | — |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1047.50 | — |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-66.75~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1060.67 | — |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1027.30~16.04.1 | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 18.04 LTS | linux-aws-fips +2 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2018.18 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2006.7 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1023.28 | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1056.60 | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1061.66~14.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-166.195~14.04.1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.62.1 | SUSE-SU-2021:2321-1 |
| SLES 12 SP5 | kernel-docs +4 | 4.12.14-122.77.1 | SUSE-SU-2021:2324-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.62.1 | SUSE-SU-2021:2321-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.77.1 | SUSE-SU-2021:2324-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.49.1 | SUSE-SU-2021:2349-1 |
| SLE Micro 5.0 | kernel-rt | 4.12.14-10.49.1 | SUSE-SU-2021:2349-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.77.1 | SUSE-SU-2021:2324-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_20 | 1-8.3.1 | SUSE-SU-2021:2324-1 |
Advisories 3
- SUSE-SU-2021:2349-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2321-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2324-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.19
- https://syzkaller.appspot.com/bug?id=f99edaeec58ad40380ed5813d89e205861be2896
- https://sites.google.com/view/syzscope/warning-in-xfrm_state_fini-2
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dbb2483b2a46fbaf833cfb5deb5ed9cace9c7399
- https://security.netapp.com/advisory/ntap-20210720-0003/