SB2026100778 - Improper update of reference count in Linux kernel bluetooth
Published: October 7, 2026
Security Bulletin ID
SB2026100778
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) Improper update of reference count (CVE-ID: CVE-2026-98293)
CWE-ID: CWE-911 - Improper Update of Reference Count
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 a parent socket resource leak.
The vulnerability exists due to failure to release a parent socket reference in the Bluetooth ISO iso_conn_ready() function when child socket allocation fails. A local user can exercise the affected connection handling error path to cause a parent socket resource leak.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/9228f87365e68a6cae191f57f456e89a6d2167cf
- https://git.kernel.org/stable/c/ca18ee413a7cb6f09885778039225e58bae0d607
- https://git.kernel.org/stable/c/e2b156a8d25966be49c1f809b654a2c4bb16564d
- https://git.kernel.org/stable/c/ea8a262662be62c095789924c11722ecbf40a4de
- https://git.kernel.org/stable/c/f016daabd4fec4e9b8563f8b6f42eabce0ca66b0