CVE-2026-74679: usb: gadget: f_ncm: Use unsigned int for ndp_index

lowCVSS 2.4CVE-2026-74679

CSIRTS triage

vendor: Linux product: Linux kernelOther

What: Signed/unsigned integer mismatch in USB gadget NCM driver's ndp_index handling may cause buffer access issues.
Who is affected: Systems acting as USB Network Control Model gadgets with potential out-of-bounds memory access.
Urgency: Low severity (CVSS 2.4) with no current exploitation; type safety issue.
Action: Apply Linux kernel patch to use unsigned int type for ndp_index in f_ncm gadget driver.

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-2026-74679

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-2026-746790.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-74679	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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unknownCVE-2026-74679: In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_ncm: Use un…nvd

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