Out-of-bounds write in Linux kernel - CVE-2026-97602
Published: September 28, 2026
Vulnerability identifier: #VU152611
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97602
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges.
The vulnerability exists due to an out-of-bounds write caused by stale reassembly metadata in IPv6 fragment reassembly when processing IPv6 fragments after fragment queue teardown. A local user can send crafted IPv6 fragments to escalate privileges.
Exploitation requires unprivileged network namespaces to be available.
Affected software
Linux kernel
How to mitigate CVE-2026-97602
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3