CVE-2025-21763

In the Linux kernel, the following vulnerability has been resolved: neighbour: use RCU protection in __neigh_notify() __neigh_notify() can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF.

Score

CVSS 3.1 7.8 High

Status

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

Published

2025-02-27

Last modified

2026-10-15

Weaknesses

CWE-416

Affected products

• Linux Kernel (Linux)
• Simatic S7-1500 Tm Mfp - Gnulinux Subsystem (Siemens)

References

• https://git.kernel.org/stable/c/e1aed6be381bcd7f46d4ca9d7ef0f5f3d6a1be32
• https://git.kernel.org/stable/c/8666e9aab801328c1408a19fbf4070609dc0695a
• https://git.kernel.org/stable/c/40d8f2f2a373b6c294ffac394d2bb814b572ead1
• https://git.kernel.org/stable/c/784eb2376270e086f7db136d154b8404edacf97b
• https://git.kernel.org/stable/c/1cbb2aa90cd3fba15ad7efb5cdda28f3d1082379
• https://git.kernel.org/stable/c/cdd5c2a12ddad8a77ce1838ff9f29aa587de82df
• https://git.kernel.org/stable/c/559307d25235e24b5424778c7332451b6c741159
• https://git.kernel.org/stable/c/becbd5850c03ed33b232083dd66c6e38c0c0e569
• https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
• https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
• https://cert-portal.siemens.com/productcert/html/ssa-265688.html
• https://cert-portal.siemens.com/productcert/html/ssa-784472.html