CVE-2026-74523: qede: sync udp_tunnel ports outside qede_lock in the recovery path

mediumCVSS 4.1CVE-2026-74523

CSIRTS triage

vendor: Linux product: Linux Kernel Memory corruption

What: A race condition in the qede driver allows UDP tunnel port synchronization to occur outside the qede_lock during recovery, potentially causing memory corruption.
Who is affected: Systems running affected Linux kernel versions with qede network driver.
Urgency: Medium priority; not currently exploited but memory corruption could enable privilege escalation or denial of service.
Action: Apply kernel patches addressing qede_lock synchronization in the recovery path.

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 4.1
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-74523

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-2026-745230.50% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 41% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-74523	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

Recent advisories for qede

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-2026-80609: In the Linux kernel, the following vulnerability has been resolved: qede: fix out-of-bounds ch…nvd · 2026-08-28
highCVE-2026-74523: In the Linux kernel, the following vulnerability has been resolved: qede: sync udp_tunnel port…nvd · 2026-08-15
criticalCVE-2026-72339: In the Linux kernel, the following vulnerability has been resolved: qede: fix off-by-one in BD…nvd · 2026-08-15