CVE-2025-40074

Linux Kernel 4.13-6.17.3 - Use-After-Free in IPv4 Functions

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: ipv4: start using dst_dev_rcu() Change icmpv4_xrlim_allow(), ip_defrag() to prevent possible UAF. Change ipmr_prepare_xmit(), ipmr_queue_fwd_xmit(), ip_mr_output(), ipv4_neigh_lookup() to use lockdep enabled dst_dev_rcu().

References (2)

Core 2

Core References

Patch

https://git.kernel.org/stable/c/923e0734c386984d45de508528a7a7ad91d791cc

Patch

https://git.kernel.org/stable/c/6ad8de3cefdb6ffa6708b21c567df0dbf82c43a8

Scores

EPSS 0.0017

EPSS Percentile 6.6%

Details

Status published

Products (7)

linux/Kernel 4.13.0 - 6.17.3linux

Linux/Linux < 4.13

Linux/Linux 4.13

Linux/Linux 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 - 6ad8de3cefdb6ffa6708b21c567df0dbf82c43a8

Linux/Linux 4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 - 923e0734c386984d45de508528a7a7ad91d791cc

Linux/Linux 6.17.3 - 6.17.*

Linux/Linux 6.18

Published Oct 28, 2025

Tracked Since Feb 18, 2026