CVE-2026-74383

HIGHPre-NVD 8.48.4—
EchelonGraph scoreHIGH confidence

Score 8.4 from GitHub Security Advisory (severity: HIGH) published 2026-08-15. a secondary CVSS source baseline 8.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
8.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
8.4
EG Score
8.4(high)
EG Risk
42(Track)
EG Risk 42/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity84% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

August 15, 2026

Last Modified

August 17, 2026

Advisory Details (3)

Auto-updated Aug 17, 2026
No patch confirmed yet.
generic

nvme-pci: fix out-of-bounds access in nvme_setup_descriptor_pools - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fa9b6accd1ad7af6914b409c6b003c417724c299
generic

nvme-pci: fix out-of-bounds access in nvme_setup_descriptor_pools - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a192b8cfa447e1b3701a13434a31c392b2e7ed29
generic

nvme-pci: fix out-of-bounds access in nvme_setup_descriptor_pools - kernel/git/stable/linux.git - Linux kernel stable tree

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

Vendor Advisories for CVE-2026-74383(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 30× in last 7d / 30× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-21 00:11 UTCEG score recompute
  2. 2026-08-21 00:10 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 11:22 UTCGHSA enrichment
  5. 2026-08-19 22:33 UTCEG score recompute
  6. 2026-08-19 22:33 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 09:44 UTCGHSA enrichment
  9. 2026-08-18 20:54 UTCEG score recompute
  10. 2026-08-18 20:54 UTCGHSA enrichment
  11. 2026-08-18 13:49 UTCEPSS rescore
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 08:05 UTCGHSA enrichment
  14. 2026-08-17 19:15 UTCEG score recompute
  15. 2026-08-17 19:15 UTCGHSA enrichment
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-17 06:26 UTCEG score recompute
  18. 2026-08-17 06:26 UTCGHSA enrichment
  19. 2026-08-17 05:56 UTCEG score recompute▲ 8.40
  20. 2026-08-17 05:56 UTCGHSA enrichment
  21. 2026-08-17 05:54 UTCMITRE cvelistV5CVSS v3 → 8.4 · severity → HIGH
  22. 2026-08-17 05:26 UTCEG score recompute
  23. 2026-08-17 05:26 UTCGHSA enrichment
  24. 2026-08-17 05:25 UTCMITRE cvelistV5
  25. 2026-08-16 14:56 UTCEPSS rescore
Show 5 more
  1. 2026-08-16 14:56 UTCEPSS rescore
  2. 2026-08-16 02:15 UTCEPSS rescore
  3. 2026-08-15 06:23 UTCNVD update
  4. 2026-08-15 06:14 UTCEG score recompute
  5. 2026-08-15 06:12 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74383?
CVE-2026-74383 is a high vulnerability published on August 15, 2026. In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix out-of-bounds access in nvmesetupdescriptor_pools nvmesetupdescriptorpools() indexes dev->descriptorpools[] using the numanode forwarded from hctx->numanode by its single caller, nvmeinithctxcommon(). On a non-NUMA…
When was CVE-2026-74383 disclosed?
CVE-2026-74383 was first published in the National Vulnerability Database on August 15, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74383 actively exploited?
CVE-2026-74383 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 96.0% of all scored CVEs.
What is the CVSS score of CVE-2026-74383?
CVE-2026-74383 has a CVSS v3 base score of 8.4 (NVD).
How do I remediate CVE-2026-74383?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74383, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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