nvme-pci: fix out-of-bounds access in nvme_setup_descriptor_pools

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-74383
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:22:40 UTC
Updated2026-08-15 06:22:40 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix out-of-bounds access in nvme_setup_descriptor_pools nvme_setup_descriptor_pools() indexes dev->descriptor_pools[] using the numa_node forwarded from hctx->numa_node by its single caller, nvme_init_hctx_common(). On a non-NUMA kernel hctx->numa_node is NUMA_NO_NODE (-1). Because the parameter was declared 'unsigned', the value becomes UINT_MAX and the index walks off the array (sized to nr_node_ids), faulting during nvme_alloc_ns() and leaving the namespace without a /dev node. Reproduces on any NVMe controller probed by a CONFIG_NUMA=n kernel: BUG: unable to handle page fault for address: ffff889101603d38 RIP: 0010:nvme_init_hctx_common+0x5a/0x190 [nvme] Call Trace: nvme_init_hctx+0x10/0x20 [nvme] nvme_alloc_ns+0x9e/0xa10 [nvme_core] nvme_scan_ns+0x301/0x3b0 [nvme_core] nvme_scan_ns_async+0x23/0x30 [nvme_core] Switch the parameter to int and fall back to node 0 when it is NUMA_NO_NODE; node 0 is always present.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected d977506f8863807129d7a11f4057dfb1b38085ea 3e8aed5edaeeb237f97255d711aac6b5843fc059 git Not specified
CNA Linux Linux affected d977506f8863807129d7a11f4057dfb1b38085ea fa9b6accd1ad7af6914b409c6b003c417724c299 git Not specified
CNA Linux Linux affected d977506f8863807129d7a11f4057dfb1b38085ea a192b8cfa447e1b3701a13434a31c392b2e7ed29 git Not specified
CNA Linux Linux affected 6.16 Not specified
CNA Linux Linux unaffected 6.16 semver Not specified
CNA Linux Linux unaffected 6.18.40 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/fa9b6accd1ad7af6914b409c6b003c417724c299 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a192b8cfa447e1b3701a13434a31c392b2e7ed29 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3e8aed5edaeeb237f97255d711aac6b5843fc059 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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