Out-of-bounds read in Linux kernel - CVE-2026-97423
Published: September 25, 2026
Vulnerability identifier: #VU152041
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97423
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to read memory out of bounds.
The vulnerability exists due to an out-of-bounds read in the cxl/region construct_region() function when constructing a region with an unresolved partition index. A local user can trigger region construction with an unresolved partition index to read memory out of bounds.
The partition index has an initial value of -1 when it has not been resolved.
Affected software
Linux kernel
How to mitigate CVE-2026-97423
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3