CVEvulnerability
CVE-2026-98088
- Status
- Undergoing Analysis
- Published
- 2026-09-25
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
scsi: mpt3sas: Avoid out-of-bounds cpumask_of_node() call in _base_assign_reply_queues()
dev_to_node() can return NUMA_NO_NODE (-1) on systems without NUMA
topology information for the PCI device, such as single-socket boards
that don't expose device-to-node affinity. Passing -1 directly into
cpumask_of_node() indexes node_to_cpumask_map[-1], an out-of-bounds
array read caught by UBSAN:
UBSAN: array-index-out-of-bounds in arch/x86/include/asm/topology.h:72:28
index -1 is out of range for type 'cpumask *[1024]'
Fall back to cpu_online_mask when no NUMA node is available, rather than
assuming dev_to_node() always returns a valid node index.
References
- https://git.kernel.org/stable/c/06a994ad7bbd13714cd45df582389f751531e60c git.kernel.org
- https://git.kernel.org/stable/c/0a5f7cdb0cb911584720591069065f09c59ec4fc git.kernel.org
- https://git.kernel.org/stable/c/45504e621b7e884abe59f201e093a3eac7fca7fe git.kernel.org
- https://git.kernel.org/stable/c/7b23144c3ff6e46d7d4a464b02f8944265684e39 git.kernel.org
- https://git.kernel.org/stable/c/7bcce856c79c1799351e170aec83e018ccf3d044 git.kernel.org
- https://git.kernel.org/stable/c/e0d26fe176a8db6ccad4ab38c5bab29391c1946b git.kernel.org
- https://git.kernel.org/stable/c/f531758ef21ba9a7716148cc290e8d9a110f20d9 git.kernel.org