Race condition in Linux kernel - CVE-2026-93040
Published: September 18, 2026
Vulnerability identifier: #VU150978
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93040
CWE-ID: CWE-362
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 a race condition in the DesignWare eDMA channel state handling when pause(), resume(), or issue_pending() evaluates channel state concurrently with interrupt handlers. A local user can invoke DMA channel operations during a concurrent state transition to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-93040
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/2d76b91deeab973dd8a8c2ee587ce27f881de768
- https://git.kernel.org/stable/c/3001cfcee30dcc81f8b3774319c12067f126e49a
- https://git.kernel.org/stable/c/6fc436e1500c5e4f0dde2a3dbadf6d898057be8f
- https://git.kernel.org/stable/c/b6293a8a38f4d5866ce1a264c138265a02e4c53a
- https://git.kernel.org/stable/c/be0072af8ce6e9458cc586e0e8b41a251e7d4316
- https://git.kernel.org/stable/c/da16a02f0998a0d455ce6265b836b29ad92e6e58
- https://git.kernel.org/stable/c/f7d1619f3e10c619b62c6cd6d95371b5c526c85a
- https://git.kernel.org/stable/c/fe0ffa0190e862ed71e8c1a476090f648c9cb7d9