SB20260424293 - Double free in Linux kernel dma idxd driver
Published: April 24, 2026
Security Bulletin ID
SB20260424293
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) Double free (CVE-ID: CVE-2026-31436)
CWE-ID: CWE-415 - Double Free
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 double completion in llist_abort_desc() when aborting descriptor lists. A local user can trigger descriptor completion handling to cause a denial of service.
The issue can also result in descriptor leaks.
Remediation
Install update from vendor's website.