CVE catalog

CVE-2026-24401

Avahi vulnerabilities

[CVE catalog]

Severity
Medium · CVSS 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published
Source
[NVD] · [CVE record]
EPSS
0.37% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debianavahisid0.8-18fixed
Debianavahiforky0.8-18fixed
Debianavahitrixie0.8-16vulnerable
Debianavahibookworm0.8-10+deb12u1vulnerable
UbuntuavahinobleNot reportedvulnerable
Ubuntuavahinoble0.8-13ubuntu6.2fixed
Ubuntuavahi-autoipdnoble0.8-13ubuntu6.2fixed
Ubuntuavahi-daemonnoble0.8-13ubuntu6.2fixed
Ubuntuavahi-discovernoble0.8-13ubuntu6.2fixed
Ubuntuavahi-dnsconfdnoble0.8-13ubuntu6.2fixed
Ubuntuavahi-ui-utilsnoble0.8-13ubuntu6.2fixed
Ubuntuavahi-utilsnoble0.8-13ubuntu6.2fixed
Ubuntugir1.2-avahi-0.6noble0.8-13ubuntu6.2fixed
Ubuntulibavahi-client-devnoble0.8-13ubuntu6.2fixed
Ubuntulibavahi-client3noble0.8-13ubuntu6.2fixed
Ubuntulibavahi-common-datanoble0.8-13ubuntu6.2fixed
Ubuntulibavahi-common-devnoble0.8-13ubuntu6.2fixed
Ubuntulibavahi-common3noble0.8-13ubuntu6.2fixed
Ubuntulibavahi-compat-libdnssd-devnoble0.8-13ubuntu6.2fixed
Ubuntulibavahi-compat-libdnssd1noble0.8-13ubuntu6.2fixed
Ubuntulibavahi-core-devnoble0.8-13ubuntu6.2fixed
Ubuntulibavahi-core7noble0.8-13ubuntu6.2fixed
Ubuntulibavahi-glib-devnoble0.8-13ubuntu6.2fixed
Ubuntulibavahi-glib1noble0.8-13ubuntu6.2fixed
Ubuntulibavahi-gobject-devnoble0.8-13ubuntu6.2fixed
Ubuntulibavahi-gobject0noble0.8-13ubuntu6.2fixed
Ubuntulibavahi-ui-gtk3-0noble0.8-13ubuntu6.2fixed
Ubuntulibavahi-ui-gtk3-devnoble0.8-13ubuntu6.2fixed
Ubuntupython3-avahinoble0.8-13ubuntu6.2fixed
Alpineavahi3.240.8-r25fixed
Ubuntuavahipro0.7-4ubuntu5vulnerable
Ubuntuavahipro0.7-4ubuntu6vulnerable
Ubuntuavahipro0.7-4ubuntu7vulnerable
Ubuntuavahipro0.7-4ubuntu7.1vulnerable
Ubuntuavahipro0.7-4ubuntu7.2vulnerable
Ubuntuavahipro0.7-4ubuntu7.3vulnerable
Ubuntuavahipro0.7-4ubuntu7.3+esm1vulnerable
Ubuntuavahipro0.7-4ubuntu7.3+esm2fixed
Ubuntuavahi22.040.8-5ubuntu4vulnerable
Ubuntuavahi22.040.8-5ubuntu5vulnerable
Ubuntuavahi22.040.8-5ubuntu5.1vulnerable
Ubuntuavahi22.040.8-5ubuntu5.2vulnerable
Ubuntuavahi22.040.8-5ubuntu5.3vulnerable
Ubuntuavahi22.040.8-5ubuntu5.4vulnerable
Ubuntuavahi22.040.8-5ubuntu5.5fixed
Ubuntuavahi24.040.8-10ubuntu1vulnerable
Ubuntuavahi24.040.8-13ubuntu1vulnerable
Ubuntuavahi24.040.8-13ubuntu2vulnerable
Ubuntuavahi24.040.8-13ubuntu4vulnerable
Ubuntuavahi24.040.8-13ubuntu5vulnerable
Ubuntuavahi24.040.8-13ubuntu6vulnerable
Ubuntuavahi24.040.8-13ubuntu6.1vulnerable
Ubuntuavahi24.040.8-13ubuntu6.2fixed
Ubuntuavahi25.100.8-16ubuntu2vulnerable
Ubuntuavahi25.100.8-16ubuntu3vulnerable
Ubuntuavahi25.100.8-16ubuntu3.1vulnerable
Ubuntuavahi25.100.8-16ubuntu3.2fixed
Suseavahilinux enterprise server 16.00.8-160000.5.1fixed
Suseavahi-glib2linux enterprise server 16.00.8-160000.5.1fixed
Suseavahilinux enterprise server for sap applications 16.00.8-160000.5.1fixed
Suseavahi-glib2linux enterprise server for sap applications 16.00.8-160000.5.1fixed
Opensuseavahileap 16.00.8-160000.5.1fixed
Opensuseavahi-glib2leap 16.00.8-160000.5.1fixed
Opensuseavahi-qt6leap 16.00.8-160000.5.1fixed
Suseavahilinux micro 6.20.8-160000.5.1fixed
Suseavahilinux enterprise micro 5.30.8-150400.7.31.2fixed
Suseavahilinux enterprise micro 5.40.8-150400.7.31.2fixed
Suseavahilinux enterprise micro 5.50.8-150400.7.31.2fixed
Ubuntuavahipro0.7-4ubuntu5vulnerable
Ubuntuavahipro0.7-4ubuntu6vulnerable
Ubuntuavahipro0.7-4ubuntu7vulnerable
Ubuntuavahipro0.7-4ubuntu7.1vulnerable
Ubuntuavahipro0.7-4ubuntu7.2vulnerable
Ubuntuavahipro0.7-4ubuntu7.3vulnerable
Ubuntuavahipro0.7-4ubuntu7.3+esm1vulnerable
Ubuntuavahipro0.7-4ubuntu7.3+esm2fixed
Ubuntuavahi22.040.8-5ubuntu4vulnerable
Ubuntuavahi22.040.8-5ubuntu5vulnerable
Ubuntuavahi22.040.8-5ubuntu5.1vulnerable
Ubuntuavahi22.040.8-5ubuntu5.2vulnerable
Ubuntuavahi22.040.8-5ubuntu5.3vulnerable
Ubuntuavahi22.040.8-5ubuntu5.4vulnerable
Ubuntuavahi22.040.8-5ubuntu5.5fixed
Ubuntuavahi24.040.8-10ubuntu1vulnerable
Ubuntuavahi24.040.8-13ubuntu1vulnerable
Ubuntuavahi24.040.8-13ubuntu2vulnerable
Ubuntuavahi24.040.8-13ubuntu4vulnerable
Ubuntuavahi24.040.8-13ubuntu5vulnerable
Ubuntuavahi24.040.8-13ubuntu6vulnerable
Ubuntuavahi24.040.8-13ubuntu6.1vulnerable
Ubuntuavahi24.040.8-13ubuntu6.2fixed
Ubuntuavahi25.100.8-16ubuntu2vulnerable
Ubuntuavahi25.100.8-16ubuntu3vulnerable
Ubuntuavahi25.100.8-16ubuntu3.1vulnerable
Ubuntuavahi25.100.8-16ubuntu3.2fixed
Ubuntuavahi26.040.8-16ubuntu3vulnerable
Ubuntuavahi26.040.8-17ubuntu1vulnerable
Ubuntuavahi26.040.8-17ubuntu2vulnerable
Ubuntuavahi26.040.8-18ubuntu1vulnerable
Ubuntuavahi26.040.8-18ubuntu1.1fixed
Opensuseavahitumbleweed0.8-44.1fixed
Suseavahilinux micro 6.10.8-slfo.1.1_5.1fixed
Suseavahilinux micro 6.00.8-8.1fixed
Suseavahilinux enterprise server ltss extended security 12 sp50.6.32-32.39.1fixed
Suseavahilinux enterprise module for basesystem 15 sp70.8-150600.15.15.1fixed
Suseavahi-glib2linux enterprise module for basesystem 15 sp70.8-150600.15.15.1fixed
Suseavahilinux enterprise module for desktop applications 15 sp70.8-150600.15.15.1fixed
Suseavahi-glib2linux enterprise module for desktop applications 15 sp70.8-150600.15.15.1fixed
Suseavahilinux enterprise module for package hub 15 sp70.8-150600.15.15.1fixed
Opensuseavahileap 15.60.8-150600.15.15.1fixed
Opensuseavahi-glib2leap 15.60.8-150600.15.15.1fixed
Opensuseavahi-qt5leap 15.60.8-150600.15.15.1fixed
Suseavahilinux enterprise micro 5.20.7-150100.3.49.1fixed
CpeavahiNot reportedNot reportedunknown

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debianavahisourcesid0.8-18not yet assignedNot reported[1126342]
Debianavahisourceforky0.8-18not yet assignedNot reported[1126342]
Debianavahisourcetrixie(unfixed)not yet assignedNot reported[1126342]
Debianavahisourcebookworm(unfixed)not yet assignedNot reported[1126342]
Ubuntuavahidebnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntuavahi-autoipddebnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntuavahi-daemondebnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntuavahi-discoverdebnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntuavahi-dnsconfddebnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntuavahi-ui-utilsdebnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntuavahi-utilsdebnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntugir1.2-avahi-0.6debnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntulibavahi-client-devdebnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntulibavahi-client3debnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntulibavahi-common-datadebnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntulibavahi-common-devdebnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntulibavahi-common3debnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntulibavahi-compat-libdnssd-devdebnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntulibavahi-compat-libdnssd1debnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntulibavahi-core-devdebnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntulibavahi-core7debnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntulibavahi-glib-devdebnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntulibavahi-glib1debnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntulibavahi-gobject-devdebnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntulibavahi-gobject0debnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntulibavahi-ui-gtk3-0debnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntulibavahi-ui-gtk3-devdebnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Ubuntupython3-avahidebnoble0.8-13ubuntu6.2Not reportedNot reportedNot reported
Alpineavahiapk3.240.8-r25Not reportedALPINE-CVE-2026-24401Not reported
Ubuntuavahidebpro0.7-4ubuntu7.3+esm2Not reportedUBUNTU-CVE-2026-24401Not reported
Ubuntuavahideb22.040.8-5ubuntu5.5Not reportedUBUNTU-CVE-2026-24401Not reported
Ubuntuavahideb24.040.8-13ubuntu6.2Not reportedUBUNTU-CVE-2026-24401Not reported
Ubuntuavahideb25.100.8-16ubuntu3.2Not reportedUBUNTU-CVE-2026-24401Not reported
Suseavahirpmlinux enterprise server 16.00.8-160000.5.1Not reportedSUSE-SU-2026:22338-1Not reported
Suseavahi-glib2rpmlinux enterprise server 16.00.8-160000.5.1Not reportedSUSE-SU-2026:22338-1Not reported
Suseavahirpmlinux enterprise server for sap applications 16.00.8-160000.5.1Not reportedSUSE-SU-2026:22338-1Not reported
Suseavahi-glib2rpmlinux enterprise server for sap applications 16.00.8-160000.5.1Not reportedSUSE-SU-2026:22338-1Not reported
Opensuseavahirpmleap 16.00.8-160000.5.1Not reportedOPENSUSE-SU-2026:21014-1Not reported
Opensuseavahi-glib2rpmleap 16.00.8-160000.5.1Not reportedOPENSUSE-SU-2026:21014-1Not reported
Opensuseavahi-qt6rpmleap 16.00.8-160000.5.1Not reportedOPENSUSE-SU-2026:21014-1Not reported
Suseavahirpmlinux micro 6.20.8-160000.5.1Not reportedSUSE-SU-2026:22258-1Not reported
Suseavahirpmlinux enterprise micro 5.30.8-150400.7.31.2Not reportedSUSE-SU-2026:2311-1Not reported
Suseavahirpmlinux enterprise micro 5.40.8-150400.7.31.2Not reportedSUSE-SU-2026:2311-1Not reported
Suseavahirpmlinux enterprise micro 5.50.8-150400.7.31.2Not reportedSUSE-SU-2026:2311-1Not reported
Ubuntuavahidebpro0.7-4ubuntu7.3+esm2Not reportedUSN-8269-1Not reported
Ubuntuavahideb22.040.8-5ubuntu5.5Not reportedUSN-8269-1Not reported
Ubuntuavahideb24.040.8-13ubuntu6.2Not reportedUSN-8269-1Not reported
Ubuntuavahideb25.100.8-16ubuntu3.2Not reportedUSN-8269-1Not reported
Ubuntuavahideb26.040.8-18ubuntu1.1Not reportedUSN-8269-1Not reported
Opensuseavahirpmtumbleweed0.8-44.1Not reportedOPENSUSE-SU-2026:10701-1Not reported
Suseavahirpmlinux micro 6.10.8-slfo.1.1_5.1Not reportedSUSE-SU-2026:21117-1Not reported
Suseavahirpmlinux micro 6.00.8-8.1Not reportedSUSE-SU-2026:21127-1Not reported
Suseavahirpmlinux enterprise server ltss extended security 12 sp50.6.32-32.39.1Not reportedSUSE-SU-2026:1442-1Not reported
Suseavahirpmlinux enterprise module for basesystem 15 sp70.8-150600.15.15.1Not reportedSUSE-SU-2026:1441-1Not reported
Suseavahi-glib2rpmlinux enterprise module for basesystem 15 sp70.8-150600.15.15.1Not reportedSUSE-SU-2026:1441-1Not reported
Suseavahirpmlinux enterprise module for desktop applications 15 sp70.8-150600.15.15.1Not reportedSUSE-SU-2026:1441-1Not reported
Suseavahi-glib2rpmlinux enterprise module for desktop applications 15 sp70.8-150600.15.15.1Not reportedSUSE-SU-2026:1441-1Not reported
Suseavahirpmlinux enterprise module for package hub 15 sp70.8-150600.15.15.1Not reportedSUSE-SU-2026:1441-1Not reported
Opensuseavahirpmleap 15.60.8-150600.15.15.1Not reportedSUSE-SU-2026:1441-1Not reported
Opensuseavahi-glib2rpmleap 15.60.8-150600.15.15.1Not reportedSUSE-SU-2026:1441-1Not reported
Opensuseavahi-qt5rpmleap 15.60.8-150600.15.15.1Not reportedSUSE-SU-2026:1441-1Not reported
Suseavahirpmlinux enterprise micro 5.20.7-150100.3.49.1Not reportedSUSE-SU-2026:1191-1Not reported

[Debian bug #1126342]

Notes

[trixie] avahi: Minor issue [bookworm] avahi: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

  • [avahi-autoipd]Affected

    Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • [avahi-daemon]Affected

    Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • [avahi-discover]Affected

    Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · all · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · all · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • [avahi-dnsconfd]Affected

    Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • [avahi-ui-utils]Affected

    Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • [avahi-utils]Affected

    Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • [libavahi-core7]Affected

    Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • [libavahi-glib1]Affected

    Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

  • Source package: [avahi]

    Details (2)
    • 0.8-10+deb12u1 · amd64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

    • 0.8-10+deb12u1 · arm64 · bookworm

      Affected

      usn · avahi · debian · bookworm; usn · avahi · debian · 12

Next results

Observed:

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]