Uncontrolled Recursion Affecting libavahi-glib-devel package, versions <0.8-160000.5.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.37% (31st percentile)

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  • Snyk IDSNYK-SLES1600-LIBAVAHIGLIBDEVEL-17781481
  • published2 Jul 2026
  • disclosed22 Jun 2026

Introduced: 22 Jun 2026

CVE-2026-24401  (opens in a new tab)
CWE-674  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 libavahi-glib-devel to version 0.8-160000.5.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libavahi-glib-devel package and not the libavahi-glib-devel package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In versions 0.9rc2 and below, avahi-daemon can be crashed via a segmentation fault by sending an unsolicited mDNS response containing a recursive CNAME record, where the alias and canonical name point to the same domain (e.g., "h.local" as a CNAME for "h.local"). This causes unbounded recursion in the lookup_handle_cname function, leading to stack exhaustion. The vulnerability affects record browsers where AVAHI_LOOKUP_USE_MULTICAST is set explicitly, which includes record browsers created by resolvers used by nss-mdns. This issue is patched in commit 78eab31128479f06e30beb8c1cbf99dd921e2524, which is part of version 0.9-rc3.

CVSS Base Scores

version 3.1