SB20260928303 - Use of Uninitialized Variable in Linux kernel bluetooth driver
Published: September 28, 2026 Updated: September 30, 2026
Security Bulletin ID
SB20260928303
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use of Uninitialized Variable (CVE-ID: CVE-2026-97907)
CWE-ID: CWE-457 - Use of Uninitialized Variable
CVSSv4: 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]
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.
Remediation
Install update from vendor's website.