Improper Initialization in Linux kernel - CVE-2026-80645
Published: August 28, 2026
Vulnerability identifier: #VU146158
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80645
CWE-ID: CWE-665
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an improper initialization issue in tsi721_db_dpc() when processing doorbell events. A local user can trigger the vulnerable code path to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-80645
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/070f356ea4f419e4e85e4089381f4477f41d969e
- https://git.kernel.org/stable/c/13092966ba5d8fb214a4efeddc87f9ed0fd2f945
- https://git.kernel.org/stable/c/3b5c66e922aa6a3331915a14520848a5b3beccc7
- https://git.kernel.org/stable/c/81c06ef66c3ab6eeaa72eb790c90ae043cdb3d43
- https://git.kernel.org/stable/c/9e775c3199903d7c09a52530042b1198eab705bd
- https://git.kernel.org/stable/c/acd54f42abbbd806464468838dbc04efd203d2be
- https://git.kernel.org/stable/c/dc28a14f3e4546b2b06098d24177942540581a5f
- https://git.kernel.org/stable/c/fc15e3a30ddd950f009c76765331783b9af94a87