CVE-2026-80715: igc: remove napi_synchronize() in igc_down()

criticalCVSS 9.8CVE-2026-80715

CSIRTS triage

vendor: Linux product: Linux Kernel Denial of service

What: NAPI synchronization removal in igc_down() creates a race condition causing potential denial of service.
Who is affected: Systems using Intel Gigabit Ethernet (igc) driver.
Urgency: Critical severity (CVSS 9.8); requires immediate remediation despite no known exploitation.
Action: Apply critical kernel patch immediately.

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: critical — CVSS 9.8
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80715

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-2026-807150.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-80715	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 igc

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.

unknownCVE-2026-80715: In the Linux kernel, the following vulnerability has been resolved: igc: remove napi_synchroni…nvd · 2026-08-28
mediumCVE-2024-26853: igc: avoid returning frame twice in XDP_REDIRECTmsrc · 2026-08-06
unknownCVE-2026-64110: In the Linux kernel, the following vulnerability has been resolved: igc: fix potential skb lea…nvd · 2026-07-19
criticalCVE-2026-64035: In the Linux kernel, the following vulnerability has been resolved: igc: set tx buffer type fo…nvd · 2026-07-19