Description
A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation. A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread. We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1.
Affected products
debian: debian linux; linux: linux kernel
References10
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/comm… Mailing ListPatch
- kernel.dance/e2b706c691905fe78468c361aaabc719d0a496f1 Patch
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/comm… Mailing ListPatch
- kernel.dance/e2b706c691905fe78468c361aaabc719d0a496f1 Patch
- packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security… Third Party Advisory
- lists.debian.org/debian-lts-announce/2024/01/msg00004.html Mailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2024/01/msg00005.html Mailing ListThird Party Advisory
- packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security… Third Party Advisory
- lists.debian.org/debian-lts-announce/2024/01/msg00004.html Mailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2024/01/msg00005.html Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
7.0
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 31 · as of 5 November 2026
- CWE
- CWE-416
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.