SB2026050879 - Race condition in Linux kernel nvme host driver
Published: May 8, 2026
Security Bulletin ID
SB2026050879
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Race condition (CVE-ID: CVE-2026-43448)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: 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
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.
Remediation
Install update from vendor's website.
References
- 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