Improper resource shutdown or release in Linux kernel - CVE-2026-43425
Published: May 8, 2026
Vulnerability identifier: #VU130758
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-43425
CWE-ID: CWE-404
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource shutdown in mdc800_device_read() when handling USB read timeouts. A local user can trigger a timeout and resubmit the same URB while it is still active to cause a denial of service.
The issue is triggered on a subsequent read operation after a prior timeout leaves the download URB in flight.
How to mitigate CVE-2026-43425
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/15536f6c15f48037a1672cbdea53266d67861ff6
- https://git.kernel.org/stable/c/155f471e38aa516f6c58c2ae03ca3dc222fa2fdb
- https://git.kernel.org/stable/c/1be3b77de4eb89af8ae2fd6610546be778e25589
- https://git.kernel.org/stable/c/9bf877cc67309b2a063b0087c3ad8585fb11cec3
- https://git.kernel.org/stable/c/9fa5a49760979ba016506fe292a431c8b83f043e
- https://git.kernel.org/stable/c/b7fed917f84e484e06c5e9926746d0b524e3a93e
- https://git.kernel.org/stable/c/cc7398447810c9450c90d092efe9997569f8d96f
- https://git.kernel.org/stable/c/d4a400a6a4c4d49f77a04a3f401df5ae1a10657c