Bug 2536763 (CVE-2026-90202) - CVE-2026-90202 kernel: scsi: mpt3sas: Avoid freeing unallocated PCIe SGL buffers
Summary: CVE-2026-90202 kernel: scsi: mpt3sas: Avoid freeing unallocated PCIe SGL buffers
Keywords:
Status: NEW
Alias: CVE-2026-90202
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-17 19:28 UTC by OSIDB Bzimport
Modified: 2026-10-06 14:20 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-09-17 19:28:15 UTC 
In the Linux kernel, the following vulnerability has been resolved:

scsi: mpt3sas: Avoid freeing unallocated PCIe SGL buffers

_base_release_memory_pools() unconditionally frees every
ioc->pcie_sg_lookup[] entry, including ones the setup loop never
allocated after a partial failure, causing a "bad dma" warning on debug
kernels or a NULL pointer dereference otherwise.
Comment 1 Keith Grant 2026-09-23 22:54:20 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90202.mbox
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