Description
In the Linux kernel, the following vulnerability has been resolved: net: hsr: fix potential OOB access in supervision frame handling Ensure the entire TLV header is linearized before access by adding sizeof(struct hsr_sup_tlv) to the pskb_may_pull() calls. Without this, a truncated frame could cause an out-of-bounds access.
Affected products
linux: linux kernel
References6
- git.kernel.org/stable/c/09a37dca090c55ffb1a33f52d8667f1c2367ef48 Patch
- git.kernel.org/stable/c/71c986c0ba45b7dc574fae27c83e7b6671556f37 Patch
- git.kernel.org/stable/c/78607a6854a22a2502f68092202e75a39af4865d Patch
- git.kernel.org/stable/c/a4b64f3e9c7b8259f7dd251a0313420ba7c01852 Patch
- git.kernel.org/stable/c/f229426072fc865654a60978bb7fda790a051ff3 Patch
- git.kernel.org/stable/c/fbd0662f9c9a66e8cc3df3099cca8ed6d3837cc7 Patch
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 43 · as of 14 November 2026
- CWE
- CWE-125
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.