Uncontrolled Recursion Affecting avahi package, versions [0,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CONAN-AVAHI-15091879
- published26 Jan 2026
- disclosed24 Jan 2026
- creditUnknown
Introduced: 24 Jan 2026
NewCVE-2026-24401 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Uncontrolled Recursion via the lookup_handle_cname function when processing an unsolicited mDNS response containing a recursive CNAME record, where the alias and canonical name are identical. An attacker can cause a crash and exhaust the stack by sending a specially crafted mDNS response.
Note:
This is only exploitable if AVAHI_LOOKUP_USE_MULTICAST is explicitly set in the record browser configuration.