CVE-2026-74680: usb: atm: cxacru: properly kill rcv_urb on error in cxacru_cm()

lowCVSS 2.4CVE-2026-74680

CSIRTS triage

vendor: Linux product: Linux kernelOther

What: Incomplete cleanup of receive URB in USB ATM cxacru driver's error path may leave dangling references.
Who is affected: Systems using Conexant USB ATM modem devices experiencing error conditions during initialization.
Urgency: Low severity (CVSS 2.4) with no current exploitation; affects error handling paths.
Action: Apply Linux kernel patch to properly kill rcv_urb on error conditions in cxacru_cm function.

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: low — CVSS 2.4
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-74680

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-2026-746800.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-74680	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

unknownCVE-2026-74680: In the Linux kernel, the following vulnerability has been resolved: usb: atm: cxacru: properly…nvd

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