SB2026050857 - NULL pointer dereference in Linux kernel scsi mpi3mr driver
Published: May 8, 2026
Security Bulletin ID
SB2026050857
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) NULL pointer dereference (CVE-ID: CVE-2026-43473)
CWE-ID: CWE-476 - NULL Pointer Dereference
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 null pointer dereference in the mpi3mr driver request and reply queue cleanup logic when handling failed queue creation during resource cleanup. A local user can trigger queue creation failure and subsequent cleanup to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/220d7ca70611a73d50ef8e9edac630ed1ececb7c
- https://git.kernel.org/stable/c/78d3f201f8b609928eade53cf03a52df5415aaf7
- https://git.kernel.org/stable/c/7da755e0d02e9ca035065127e108d1fed8950dc8
- https://git.kernel.org/stable/c/7df0296ad4e9253d12c6dbe7f120044dddc95600
- https://git.kernel.org/stable/c/e978a36f332ede78eb4de037b517db16265d420d
- https://git.kernel.org/stable/c/f8e833572a3e12a2a1ffe7b3646af024264d38ca
- https://git.kernel.org/stable/c/fa96392ebebc8fade2b878acb14cce0f71016503