Out-of-bounds write in Linux kernel - CVE-2026-97953
Published: September 28, 2026
Vulnerability identifier: #VU152527
CSH Severity: Medium
CVSS v4: 8.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97953
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to corrupt the TX ring.
The vulnerability exists due to an out-of-bounds write in the stmmac_tso_xmit() TX descriptor availability check when processing highly fragmented TSO traffic. A remote attacker can trigger transmission of a highly fragmented TSO packet to corrupt the TX ring.
Affected software
Linux kernel
How to mitigate CVE-2026-97953
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3