NULL pointer dereference in Linux kernel - CVE-2026-90202
Published: September 19, 2026
Vulnerability identifier: #VU151276
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-90202
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a null pointer dereference in the _base_release_memory_pools() function of the mpt3sas driver when releasing PCIe SGL buffers after a partial allocation failure. A local user can trigger memory-pool cleanup after a partial allocation failure to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-90202
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/240b582b6372bebb1245d911add9954b7dd6c02d
- https://git.kernel.org/stable/c/2dbdd025b228110ccbfbab95fe16e098313a14af
- https://git.kernel.org/stable/c/3361709fb6f6568b157c6f24ed21a4a5d86d73db
- https://git.kernel.org/stable/c/a61181f9ee30a98d2350c1bff32954a7521f9a23
- https://git.kernel.org/stable/c/afedf35df054bd713e9e13771aa0a056932c5c67
- https://git.kernel.org/stable/c/b9f679dfe629004b593f018df33b330d799bcee4
- https://git.kernel.org/stable/c/bc3398db3b64729b4a7907af317daad04795ad40
- https://git.kernel.org/stable/c/e2cd23443d3616ea0876f27762b17e2ec67d896c