CVE-2026-46304: nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free

mediumCVSS 5.5CVE-2026-46304

CSIRTS triage

product: nvmetOther

What: This vulnerability involves avoiding recursive flushing of the nvmet-wq in the nvmet_ctrl_free function.
Who is affected: Deployments using the nvmet subsystem are affected.
Urgency: Remediation is medium urgency due to the medium severity rating.
Action: Monitor for updates regarding this issue.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 5.5
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-46304

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-463040.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-46304	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

high[UPDATE] [high] Linux Kernel: Multiple vulnerabilities allow denial of servicecert-bund

Recent advisories for nvmet

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

criticalCVE-2026-52989: nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callersmsrc · 2026-06-09