SB20260720105 - Double free in Linux kernel qlogic qed driver
Published: July 20, 2026
Security Bulletin ID
SB20260720105
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-2026-64118)
CWE-ID: CWE-415 - Double Free
CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to double free in qed_cid_map_free() in the QLogic qed driver context management code when handling failed CID bitmap allocations. A local user can trigger the failing allocation path to cause a denial of service.
Exploitation requires device-specific setup to reach the affected allocation failure path.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227
- https://git.kernel.org/stable/c/0e47fc1c9181ae029e0e35a865cbf2adcbae626c
- https://git.kernel.org/stable/c/2bccfb8476ca5f3548afbd623dc7a6980d4e77de
- https://git.kernel.org/stable/c/3904b993cc17ec5d7c5d3b57dbd0b775dafb9684
- https://git.kernel.org/stable/c/8cf5e4d2ca6b101d163c7423a426fb0aec34f7bb
- https://git.kernel.org/stable/c/9fe030719bd083b766602692ee96c8c985798e3c
- https://git.kernel.org/stable/c/a04c207f0801abdd23a169b5f902a9845059a65a
- https://git.kernel.org/stable/c/bdf678a273cadbccc347f331ae2e93ff4d14834c