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  1. CVEs
  2. CVE-2025-21763
  1. CVEs

CVE-2025-21763

high
  • Information
  • CPEs
  • Plugins

Description

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.

References

https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html

https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html

https://git.kernel.org/stable/c/e1aed6be381bcd7f46d4ca9d7ef0f5f3d6a1be32

https://git.kernel.org/stable/c/cdd5c2a12ddad8a77ce1838ff9f29aa587de82df

https://git.kernel.org/stable/c/becbd5850c03ed33b232083dd66c6e38c0c0e569

https://git.kernel.org/stable/c/8666e9aab801328c1408a19fbf4070609dc0695a

https://git.kernel.org/stable/c/784eb2376270e086f7db136d154b8404edacf97b

https://git.kernel.org/stable/c/559307d25235e24b5424778c7332451b6c741159

https://git.kernel.org/stable/c/40d8f2f2a373b6c294ffac394d2bb814b572ead1

https://git.kernel.org/stable/c/1cbb2aa90cd3fba15ad7efb5cdda28f3d1082379

https://cert-portal.siemens.com/productcert/html/ssa-265688.html

Details

Source: Mitre, NVD

Published: 2025-02-27

Updated: 2026-05-12

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00016

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