CVE-2026-64000

critical

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.

References

https://git.kernel.org/stable/c/fbd0662f9c9a66e8cc3df3099cca8ed6d3837cc7

https://git.kernel.org/stable/c/f229426072fc865654a60978bb7fda790a051ff3

https://git.kernel.org/stable/c/a4b64f3e9c7b8259f7dd251a0313420ba7c01852

https://git.kernel.org/stable/c/78607a6854a22a2502f68092202e75a39af4865d

https://git.kernel.org/stable/c/71c986c0ba45b7dc574fae27c83e7b6671556f37

https://git.kernel.org/stable/c/09a37dca090c55ffb1a33f52d8667f1c2367ef48

Details

Source: Mitre, NVD

Published: 2026-07-19

Updated: 2026-07-20

Risk Information

CVSS v2

Base Score: 10

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

Severity: Critical

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.00172