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Fixed

pf can overflow the stack parsing crafted SCTP packets

FreeBSD-SA-26:14.pf · CVE-2026-7164

Our decision for FreeSense

FreeBSD corrected this on 2026-04-29, before the FreeBSD source pin of every FreeSense version.

  • Advisory: corrected 2026-04-29
  • FreeSense 1.0 pin: e004ff15f87e (2026-08-03)
  • FreeSense 1.1 pin: a52c50b4b7c2 (2026-10-04)
  • FreeSense 1.2 pin: a52c50b4b7c2 (2026-10-04)
Decided by rules, not yet reviewed. The status comes from the advisory's correction date and the build configuration. A maintainer has not looked at whether FreeSense is exposed in practice. How we triage

By FreeSense version

VersionStatusFreeBSD pin
FreeSense 1.01.0.7 · frozen, no further fixesFixedFreeBSD pin of 2026-08-032026-08-03e004ff15
FreeSense 1.11.1.9FixedFreeBSD pin of 2026-10-042026-10-04a52c50b4
FreeSense 1.21.2.0-DEVELOPMENTFixedFreeBSD pin of 2026-10-042026-10-04a52c50b4

Workaround

No workaround is available. Systems not using pf are not affected.

What FreeBSD says

Incorrect packet validation allowed unbounded recursion parsing SCTP chunk parameters. This can eventually result in a stack overflow and panic.

Impact

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.

Excerpt from the FreeBSD advisory. Read the original for the full text and the fix.

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