Description
A NULL pointer dereference vulnerability was found in netlink_dump. This issue can occur when the Netlink socket receives the message(sendmsg) for the XFRM_MSG_GETSA, XFRM_MSG_GETPOLICY type message, and the DUMP flag is set and can cause a denial of service or possibly another unspecified impact. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is unlikely.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
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 | 4.8.5-1 | — |
| Debian 13 | linux | 4.8.5-1 | — |
| Debian 12 | linux | 4.8.5-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +7 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-riscv +23 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-184.214 | — |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1109.120 | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1075.82 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1041.46 | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1073.77 | — |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-184.214~14.04.1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.208.1 | SUSE-SU-2023:3324-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.78.2.el7uek | ELSA-2023-12759 |
Advisories 3
- SUSE-SU-2023:3324-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-1741 Linux Kernel: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Sep 7, 2023
- ELSA-2023-12759 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 1, 2023