Out-of-bounds write in Linux kernel - CVE-2026-97495
Published: September 24, 2026
Vulnerability identifier: #VU151986
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97495
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform an out-of-bounds write.
The vulnerability exists due to improper bounds checking in the allocate_doorbell function when specifying a doorbell ID for restoration. A local user can provide a doorbell ID that exceeds the maximum number of queues per process to perform an out-of-bounds write.
The specific doorbell ID option is used by CRIU.
Affected software
Linux kernel
How to mitigate CVE-2026-97495
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3