CVE-2026-90202
kernel: scsi: mpt3sas: Avoid freeing unallocated PCIe SGL buffers
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · October 7, 2026
Description
A flaw was found in the Linux kernel's mpt3sas SCSI driver. The _base_release_memory_pools() function attempts to free PCIe SGL (Scatter-Gather List) buffers that were never allocated, particularly after a partial setup failure. This can lead to a NULL pointer dereference, potentially causing a system crash and resulting in a Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference