SB20260925215 - Unchecked Return Value in Linux kernel bluetooth
Published: September 25, 2026
Security Bulletin ID
SB20260925215
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) Unchecked Return Value (CVE-ID: CVE-2026-93209)
CWE-ID: CWE-252 - Unchecked Return Value
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 Bluetooth enable operations to time out.
The vulnerability exists due to improper handling of an allocation failure in the Bluetooth HCI command synchronization functionality when processing a Bluetooth command under memory pressure. A local user can trigger Bluetooth command processing during memory pressure to cause Bluetooth enable operations to time out.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0337fb092873a4146aa854acb554675b49c8f6b5
- https://git.kernel.org/stable/c/26f66d5b8a5663af498f7ccc94fc79fb47a2191f
- https://git.kernel.org/stable/c/d0b28e9655f4b3195210627577f81883dc1d0162
- https://git.kernel.org/stable/c/d5eef0747071934a1c080ee617fa4fd3566394c5
- https://git.kernel.org/stable/c/d7723320db4c9cb9ec2b9a36140e6c641dd77814
- https://git.kernel.org/stable/c/f5afdff569a09d1cb8cf19826199d024725576cb