Description
An issue was discovered in the Linux kernel before 5.0.19. There is an out-of-bounds array access in __xfrm_policy_unlink, which will cause denial of service, because verify_newpolicy_info in net/xfrm/xfrm_user.c mishandles directory validation.
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 | — |
| Debian 8 | linux-4.9 | 4.9.189-3~deb8u1 | DLA-1919-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +2 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-60.67 | — |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1047.49 | — |
| Ubuntu 18.04 LTS | linux-azure | 5.0.0-1018.19~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp | 4.15.0-1042.45 | — |
| Ubuntu 18.04 LTS | linux-gke-4.15 | 4.15.0-1041.43 | — |
| Ubuntu 18.04 LTS | linux-gke-5.0 | 5.0.0-1015.15~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe | 5.0.0-27.28~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1043.43 | — |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1056.65 | — |
| Ubuntu 18.04 LTS | linux-oem-osp1 | 5.0.0-1020.22 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1022.25 | — |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1044.47 | — |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1062.69 | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-157.185 | — |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1090.101 | — |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1047.49~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1056.61 | — |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1041.43 | — |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-60.67~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1052.59 | — |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1022.25~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1117.126 | — |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1121.127 | — |
Show 4 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-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 | 4.4.0-1015.20 | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1054.58 | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1059.64~14.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-164.192~14.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | kernel-rt +12 | 4.18.0-147.rt24.93.el8 | RHSA-2019:3309 |
| RHEL 8 | perf +26 | 4.18.0-147.el8 | RHSA-2019:3517 |
| RHEL 7 | perf +13 | 4.14.0-115.19.1.el7a | RHSA-2020:1493 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | kernel-azure +2 | 4.12.14-8.16.1 | SUSE-SU-2019:2658-1 |
| SLES 15 SP1 | kernel-docs +5 | 4.12.14-197.18.1 | SUSE-SU-2019:2424-1 |
| SLES 15 | kernel-azure +2 | 4.12.14-5.41.1 | SUSE-SU-2019:2651-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-150.35.1 | SUSE-SU-2019:2414-1 |
| SLES 12 SP4 | kernel-azure +2 | 4.12.14-6.26.1 | SUSE-SU-2019:2648-1 |
| SLES 12 SP4 | kernel-docs +4 | 4.12.14-95.32.1 | SUSE-SU-2019:2412-1 |
| SLES 12 SP3 | kernel-syms +2 | 4.4.180-94.107.1 | SUSE-SU-2019:2949-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_26 | 10-2.1 | SUSE-SU-2020:1784-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_27 +1 | 8-2.1 | SUSE-SU-2020:1784-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_29 | 1-4.3.1 | SUSE-SU-2019:2949-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.125.1 | SUSE-SU-2019:2984-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_30 | 10-2.1 | SUSE-SU-2020:1767-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_31 | 9-2.1 | SUSE-SU-2020:1767-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_32 | 8-2.1 | SUSE-SU-2020:1767-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_33 | 1-3.5.1 | SUSE-SU-2019:2984-1 |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP4 | kernel-azure +2 | 4.12.14-6.26.1 | SUSE-SU-2019:2648-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.32.1 | SUSE-SU-2019:2412-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.180-94.107.1 | SUSE-SU-2019:2949-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_26 | 10-2.1 | SUSE-SU-2020:1784-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_27 +1 | 8-2.1 | SUSE-SU-2020:1784-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_29 | 1-4.3.1 | SUSE-SU-2019:2949-1 |
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.121-92.125.1 | SUSE-SU-2019:2984-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_30 | 10-2.1 | SUSE-SU-2020:1767-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_31 | 9-2.1 | SUSE-SU-2020:1767-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_32 | 8-2.1 | SUSE-SU-2020:1767-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_33 | 1-3.5.1 | SUSE-SU-2019:2984-1 |
| SLE Real Time 12 SP4 | kernel-rt +3 | 4.12.14-8.6.1 | SUSE-SU-2019:2756-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.18.1 | SUSE-SU-2019:2424-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_0 | 12-34.1 | SUSE-SU-2020:1656-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_1 | 11-2.1 | SUSE-SU-2020:1656-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_2 | 10-2.1 | SUSE-SU-2020:1656-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_3 +1 | 8-2.1 | SUSE-SU-2020:1671-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_5 | 1-3.3.1 | SUSE-SU-2019:2424-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150.35.1 | SUSE-SU-2019:2414-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_11 | 9-2.1 | SUSE-SU-2020:1671-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_12 +1 | 8-2.1 | SUSE-SU-2020:1671-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_14 | 1-1.3.1 | SUSE-SU-2019:2414-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_5 | 9-2.1 | SUSE-SU-2020:1758-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_6 +1 | 8-2.1 | SUSE-SU-2020:1758-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_8 | 1-6.3.1 | SUSE-SU-2019:2412-1 |
| SUSE Real Time Module 15 SP1 | kernel-rt +3 | 4.12.14-14.11.1 | SUSE-SU-2019:2738-1 |
| SUSE OpenStack Cloud Crowbar 8 | kernel-syms +2 | 4.4.180-94.107.1 | SUSE-SU-2019:2949-1 |
| SUSE OpenStack Cloud Crowbar 8 | kgraft-patch-SLE12-SP3_Update_29 | 1-4.3.1 | SUSE-SU-2019:2949-1 |
| SUSE OpenStack Cloud 8 | kernel-syms +2 | 4.4.180-94.107.1 | SUSE-SU-2019:2949-1 |
| SUSE OpenStack Cloud 8 | kgraft-patch-SLE12-SP3_Update_29 | 1-4.3.1 | SUSE-SU-2019:2949-1 |
| SUSE OpenStack Cloud 7 | kernel-syms +2 | 4.4.121-92.125.1 | SUSE-SU-2019:2984-1 |
| SUSE OpenStack Cloud 7 | kgraft-patch-SLE12-SP2_Update_33 | 1-3.5.1 | SUSE-SU-2019:2984-1 |
| SUSE HPE Helion OpenStack 8 | kernel-syms +2 | 4.4.180-94.107.1 | SUSE-SU-2019:2949-1 |
| SUSE HPE Helion OpenStack 8 | kgraft-patch-SLE12-SP3_Update_29 | 1-4.3.1 | SUSE-SU-2019:2949-1 |
| SUSE Enterprise Storage 5 | kernel-syms +2 | 4.4.180-94.107.1 | SUSE-SU-2019:2949-1 |
| SUSE Enterprise Storage 5 | kgraft-patch-SLE12-SP3_Update_29 | 1-4.3.1 | SUSE-SU-2019:2949-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.1 | kernel-docs +8 | 4.12.14-lp151.28.16.1 | openSUSE-SU-2019:2181-1 |
| openSUSE Leap 15.0 | kernel-docs +8 | 4.12.14-lp150.12.73.1 | openSUSE-SU-2019:2173-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.32.1.el7uek | ELSA-2019-4820, ELSA-2019-4808 |
| Oracle Linux 7 | perf +5 | 4.14.35-1902.6.6.el7uek | ELSA-2019-4820 |
Advisories 23
- RHSA-2020:1493 Red Hat Security Advisory: kernel-alt security and bug fix update Red Hat Security Advisories (RHSA) · Oct 9, 2026
- RHSA-2019:3517 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2019:3309 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DLA-1919-1 linux-4.9 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2019:2173-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2756-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1784-1 Security update for the Linux Kernel (Live Patch 26 for SLE 12 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1656-1 Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2949-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2648-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2414-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2984-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2412-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2658-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1758-1 Security update for the Linux Kernel (Live Patch 5 for SLE 12 SP4) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1767-1 Security update for the Linux Kernel (Live Patch 30 for SLE 12 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2651-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2181-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2020:1671-1 Security update for the Linux Kernel (Live Patch 3 for SLE 15 SP1) SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2019:2738-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2019:2424-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2019-4820 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 11, 2019
- ELSA-2019-4808 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 1, 2019
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b805d78d300bcf2c83d6df7da0c818b0fee41427
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.19
- [debian-lts-announce] 20190914 [SECURITY] [DLA 1919-1] linux-4.9 security update mailing-list
- [debian-lts-announce] 20190915 [SECURITY] [DLA 1919-2] linux-4.9 security update mailing-list
- openSUSE-SU-2019:2173 vendor-advisory
- openSUSE-SU-2019:2181 vendor-advisory
- https://security.netapp.com/advisory/ntap-20191004-0001/
- https://support.f5.com/csp/article/K53420251?utm_source=f5support&%3Butm_medium=RSS