Description
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix nested key length validation in the set() action It's not safe to access nla_len(ovs_key) if the data is smaller than the netlink header. Check that the attribute is OK first.
Affected products
linux: linux kernel; debian: debian linux
References10
- git.kernel.org/stable/c/03d7262dd53e8c404da35cc81aaa887fd901f76b Patch
- git.kernel.org/stable/c/1489c195c8eecd262aa6712761ba5288203e28ec Patch
- git.kernel.org/stable/c/54c6957d1123a2032099b9eab51c314800f677ce Patch
- git.kernel.org/stable/c/65d91192aa66f05710cfddf6a14b5a25ee554dba Patch
- git.kernel.org/stable/c/7fcaec0b2ab8fa5fbf0b45e5512364a168f445bd Patch
- git.kernel.org/stable/c/824a7c2df5127b2402b68a21a265d413e78dcad7 Patch
- git.kernel.org/stable/c/a27526e6b48eee9e2d82efff502c4f272f1a91d4 Patch
- git.kernel.org/stable/c/be80768d4f3b6fd13f421451cc3fee8778aba8bc Patch
- lists.debian.org/debian-lts-announce/2025/05/msg00030.html Mailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2025/05/msg00045.html Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 13 · as of 7 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.