CVE-2026-68376: sctp: fix auth_hmacs array size in struct sctp_cookie

lowCVSS 3.7CVE-2026-68376

CSIRTS triage

vendor: Linux product: Linux Kernel Memory corruption

What: The auth_hmacs array in struct sctp_cookie is incorrectly sized, allowing potential buffer overflow.
Who is affected: Systems running Linux kernel with SCTP subsystem enabled.
Urgency: Low priority; CVSS 3.7 with no active exploitation.
Action: Apply kernel patch fixing the auth_hmacs array size declaration.

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 3.7
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68376

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-2026-683760.47% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 40% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-68376	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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