Unchecked Return Value in Linux kernel - CVE-2026-93209
Published: September 25, 2026
Vulnerability identifier: #VU152191
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-2026-93209
CWE-ID: CWE-252
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-93209
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External 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