SB2026050617 - Improper resource shutdown or release in Linux kernel dma idxd driver
Published: May 6, 2026
Security Bulletin ID
SB2026050617
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) Improper resource shutdown or release (CVE-ID: CVE-2026-43064)
CWE-ID: CWE-404 - Improper Resource Shutdown or Release
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 improper resource shutdown or release in the idxd DSA/IAA device workqueue handling when releasing a device object. A local user can trigger release of a crafted or repeatedly created device object to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/2bb9e9e93adff9cc8a138ae9a3a8d59b3452272e
- https://git.kernel.org/stable/c/3d33de353b1ff9023d5ec73b9becf80ea87af695
- https://git.kernel.org/stable/c/958e96533ddbd1edd127feb7624a7eed0cc379dc
- https://git.kernel.org/stable/c/d02c24af126dee45247dc7890409c86d1831859d
- https://git.kernel.org/stable/c/fc34f199eb576b3a73089452fdf0056cc9a9301d
- https://git.kernel.org/stable/c/fd4cb61bbd0fc3a749a8da6145cbb56d8f6dba35