CVE-2026-90202 scsi: mpt3sas: Avoid freeing unallocated PCIe SGL buffers
A local attacker can trigger a NULL pointer dereference in the mpt3sas driver, causing a system crash or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-90202?
CVE-2026-90202 is a vulnerability in Linux, published on 17 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-90202?
How do I fix CVE-2026-90202?
Apply the vendor's patch.
Is CVE-2026-90202 being exploited?
There is no known exploitation of CVE-2026-90202 in the wild and no public exploit code.
Sources
Also known as AZL-102899, BELL-CVE-2026-90202, DEBIAN-CVE-2026-90202, GHSA-hqrx-6q6q-fq27, UBUNTU-CVE-2026-90202.