High 8.4Published Aug 15, 2026

CVE-2026-74383nvme-pci: fix out-of-bounds access in nvme_setup_descriptor_pools

Updated under an hour ago (2026-10-19 10:00 UTC)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In 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.

CVSS: 8.4 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Aug 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from d977506f8863807129d7a11f4057dfb1b38085ea before 3e8aed5edaeeb237f97255d711aac6b5843fc059; from d977506f8863807129d7a11f4057dfb1b38085ea before fa9b6accd1ad7af6914b409c6b003c417724c299; from d977506f8863807129d7a11f4057dfb1b38085ea before a192b8cfa447e1b3701a13434a31c392b2e7ed29	CNA record

References

https://git.kernel.org/stable/c/3e8aed5edaeeb237f97255d711aac6b5843fc059
https://git.kernel.org/stable/c/fa9b6accd1ad7af6914b409c6b003c417724c299
https://git.kernel.org/stable/c/a192b8cfa447e1b3701a13434a31c392b2e7ed29

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.