CVE-2026-68315: sctp: validate stream count in sctp_process_strreset_inreq()

mediumCVSS 5.3CVE-2026-68315

CSIRTS triage

vendor: Linux product: Linux Kernel Denial of service

What: SCTP stream reset request handler does not validate stream count, leading to denial of service.
Who is affected: Systems receiving SCTP traffic with malformed stream reset requests.
Urgency: Medium severity; denial of service via crafted SCTP packets from network.
Action: Update to a patched Linux kernel version when available.

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 5.3
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68315

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-2026-683150.52% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 43% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-68315	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 sctp

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.

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