pf can overflow the stack parsing crafted SCTP packets

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Summary

CVECVE-2026-7164
StatePUBLISHED
Assignerfreebsd
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-30 08:16:07 UTC
Updated2026-04-30 08:16:07 UTC
DescriptionIncorrect packet validation allowed unbounded recursion parsing SCTP chunk parameters. This can eventually result in a stack overflow and panic. Remote attackers can craft packets which cause affected systems to panic. This affects any system where pf is configured to process traffic, independent of the configured ruleset.

Risk And Classification

Problem Types: CWE-674 | CWE-791 | CWE-674 CWE-674: Uncontrolled Recursion | CWE-791 CWE-791: Incomplete Filtering of Special Elements

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA FreeBSD FreeBSD affected 15.0-RELEASE p7 release Not specified
CNA FreeBSD FreeBSD affected 14.4-RELEASE p3 release Not specified
CNA FreeBSD FreeBSD affected 14.3-RELEASE p12 release Not specified
CNA FreeBSD FreeBSD affected 13.5-RELEASE p13 release Not specified

References

ReferenceSourceLinkTags
security.freebsd.org/advisories/FreeBSD-SA-26:14.pf.asc [email protected] security.freebsd.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Igor Gabriel Sousa e Souza (en)

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