CVE-2025-21763
HIGH severity · CVSS 7.8 · Use-after-free
7.8CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/1cbb2aa90cd3fba15ad7efb5cdda28f3d1082379 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/1cbb2aa90cd3fba15ad7efb5cdda28f3d1082379Patch
- https://git.kernel.org/stable/c/40d8f2f2a373b6c294ffac394d2bb814b572ead1Patch
- https://git.kernel.org/stable/c/559307d25235e24b5424778c7332451b6c741159Patch
- https://git.kernel.org/stable/c/784eb2376270e086f7db136d154b8404edacf97bPatch
- https://git.kernel.org/stable/c/8666e9aab801328c1408a19fbf4070609dc0695aPatch
- https://git.kernel.org/stable/c/becbd5850c03ed33b232083dd66c6e38c0c0e569Patch
- https://git.kernel.org/stable/c/cdd5c2a12ddad8a77ce1838ff9f29aa587de82dfPatch
- https://git.kernel.org/stable/c/e1aed6be381bcd7f46d4ca9d7ef0f5f3d6a1be32Patch