Race condition in Linux kernel - CVE-2026-43448
Published: May 8, 2026
Vulnerability identifier: #VU130731
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-2026-43448
CWE-ID: CWE-362
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 a race condition in nvme_poll_irqdisable() when handling concurrent device disable and IRQ polling operations. A local user can trigger the race to cause a denial of service.
The issue can lead to an unbalanced IRQ enable warning in the kernel.
How to mitigate CVE-2026-43448
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/265dbc9bc33c29f60f90be3e0afe1c4067ebb70b
- https://git.kernel.org/stable/c/628773eba024d1107cc9ec157a682cbb42ac912a
- https://git.kernel.org/stable/c/843e913cef4e33723663a899727f685a95ab53fe
- https://git.kernel.org/stable/c/b56c49897bdac5cb49e3495ef421c391628ee9bb
- https://git.kernel.org/stable/c/e311d84c62eb76e025e11a44155b402e55950b83
- https://git.kernel.org/stable/c/fc71f409b22ca831a9f87a2712eaa09ef2bb4a5e