Improper control of a resource through its lifetime in Linux kernel - CVE-2026-43250
Published: May 7, 2026
Vulnerability identifier: #VU130468
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-2026-43250
CWE-ID: CWE-664
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 memory corruption.
The vulnerability exists due to improper resource cleanup in _ep_nuke() in the ChipIdea UDC driver when handling a disconnect during a multi-segment DMA transfer. A local user can trigger a disconnect and reuse a request with stale DMA state to cause memory corruption.
The issue occurs when a request is returned with status -ESHUTDOWN while its num_mapped_sgs field and scatter-gather pointer still retain stale values.
How to mitigate CVE-2026-43250
Install security update from vendor's repository.