Signed to Unsigned Conversion Error in Linux kernel - CVE-2026-97920
Published: September 28, 2026
Vulnerability identifier: #VU152546
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97920
CWE-ID: CWE-195
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a signed-to-unsigned conversion error in the print_entries() cleanup path when reading the hist file of a trigger while histogram statistics allocation fails. A local user can read the hist file of a trigger with a .percent value to cause a denial of service.
The affected code path is not reachable in mainline while .percent and .graph modifiers are rejected for values.
Affected software
Linux kernel
How to mitigate CVE-2026-97920
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3