Use of Uninitialized Variable in Linux kernel - CVE-2026-97907
Published: September 28, 2026
Vulnerability identifier: #VU152575
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97907
CWE-ID: CWE-457
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause firmware parsing to fail.
The vulnerability exists due to use of an uninitialized variable in rtlbt_parse_firmware_v2() when parsing firmware format v2 security headers with a zero chip key ID. A local user can trigger parsing of firmware containing a security header to cause firmware parsing to fail.
Affected software
Linux kernel
How to mitigate CVE-2026-97907
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3