CVE-2026-24401

Katalog CVE

CVSS 6.5 · Medium EPSS 0,30%

Kerentanan Uncontrolled Recursion pada avahi. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

24 Januari 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

6.5 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-674: Uncontrolled Recursion

EPSS (30 hari)

0,30% peluang dieksploitasi; lebih tinggi dari 20,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/avahi/avahi/security/advisories/GHSA-h4vp-5m8j-f6w3 advisory vendor
• https://github.com/avahi/avahi/commit/78eab31128479f06e30beb8c1cbf99dd921e2524 patch
• https://github.com/avahi/avahi/issues/501 issue tracking · patch