CVE-2025-40074

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().

Score

CVSS 3.1 9.8 Critical

Status

Deferred - 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2025-10-28

Last modified

2026-10-19

Affected products

• Linux Kernel (Linux)

References

• https://git.kernel.org/stable/c/864155c164654110f68a17a63bd0339754790d67
• https://git.kernel.org/stable/c/e150f273cd8ed34ebc6d03758aad95c12fc58337
• https://git.kernel.org/stable/c/684efb2c86c887685f9aa65e1a21b3df6c1f822d
• https://git.kernel.org/stable/c/923e0734c386984d45de508528a7a7ad91d791cc
• https://git.kernel.org/stable/c/6ad8de3cefdb6ffa6708b21c567df0dbf82c43a8