Medium severity5.5OSV Advisory· Published Jun 2, 2021· Updated Jun 17, 2026
CVE-2021-3468
CVE-2021-3468
Description
A flaw was found in avahi in versions 0.6 up to 0.8. The event used to signal the termination of the client connection on the avahi Unix socket is not correctly handled in the client_work function, allowing a local attacker to trigger an infinite loop. The highest threat from this vulnerability is to the availability of the avahi service, which becomes unresponsive after this flaw is triggered.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
97- osv-coords95 versionspkg:apk/chainguard/avahipkg:apk/chainguard/avahi-devpkg:apk/chainguard/avahi-docpkg:apk/wolfi/avahipkg:apk/wolfi/avahi-devpkg:apk/wolfi/avahi-docpkg:rpm/almalinux/avahipkg:rpm/almalinux/avahi-autoipdpkg:rpm/almalinux/avahi-compat-howlpkg:rpm/almalinux/avahi-compat-howl-develpkg:rpm/almalinux/avahi-compat-libdns_sdpkg:rpm/almalinux/avahi-compat-libdns_sd-develpkg:rpm/almalinux/avahi-develpkg:rpm/almalinux/avahi-glibpkg:rpm/almalinux/avahi-glib-develpkg:rpm/almalinux/avahi-gobjectpkg:rpm/almalinux/avahi-gobject-develpkg:rpm/almalinux/avahi-libspkg:rpm/almalinux/avahi-toolspkg:rpm/almalinux/avahi-uipkg:rpm/almalinux/avahi-ui-develpkg:rpm/almalinux/avahi-ui-gtk3pkg:rpm/almalinux/python3-avahipkg:rpm/opensuse/avahi&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/avahi&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/avahi&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/avahi-glib2&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/avahi-glib2&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/avahi-mono&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/avahi-qt4&distro=openSUSE%20Leap%2015.2pkg:rpm/suse/avahi&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/avahi&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2pkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP3pkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP2pkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP3pkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/avahi&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/avahi&distro=SUSE%20Manager%20Proxy%204.0pkg:rpm/suse/avahi&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.0pkg:rpm/suse/avahi&distro=SUSE%20Manager%20Server%204.0pkg:rpm/suse/avahi&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/avahi&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/avahi&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/avahi&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/avahi-glib2&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/avahi-glib2&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2pkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP3pkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/avahi-glib2&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2012%20SP5pkg:rpm/suse/avahi-glib2&distro=SUSE%20Manager%20Proxy%204.0pkg:rpm/suse/avahi-glib2&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.0pkg:rpm/suse/avahi-glib2&distro=SUSE%20Manager%20Server%204.0pkg:rpm/suse/avahi-glib2&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/avahi-glib2&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/avahi-glib2&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/avahi-glib2&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 0.8-r1+ 94 more
- (no CPE)range: < 0.8-r1
- (no CPE)range: < 0.8-r1
- (no CPE)range: < 0.8-r1
- (no CPE)range: < 0.8-r1
- (no CPE)range: < 0.8-r1
- (no CPE)range: < 0.8-r1
- (no CPE)range: < 0.8-15.el9
- (no CPE)range: < 0.7-21.el8_9.1
- (no CPE)range: < 0.8-15.el9
- (no CPE)range: < 0.8-15.el9
- (no CPE)range: < 0.8-15.el9
- (no CPE)range: < 0.8-15.el9
- (no CPE)range: < 0.8-15.el9
- (no CPE)range: < 0.8-15.el9
- (no CPE)range: < 0.8-15.el9
- (no CPE)range: < 0.7-21.el8_9.1
- (no CPE)range: < 0.7-21.el8_9.1
- (no CPE)range: < 0.8-15.el9
- (no CPE)range: < 0.8-15.el9
- (no CPE)range: < 0.7-21.el8_9.1
- (no CPE)range: < 0.7-21.el8_9.1
- (no CPE)range: < 0.7-21.el8_9.1
- (no CPE)range: < 0.7-21.el8_9.1
- (no CPE)range: < 0.7-lp152.3.9.1
- (no CPE)range: < 0.6.32-5.13.1
- (no CPE)range: < 0.8-7.2
- (no CPE)range: < 0.7-lp152.3.9.1
- (no CPE)range: < 0.6.32-5.13.1
- (no CPE)range: < 0.7-lp152.3.9.1
- (no CPE)range: < 0.7-lp152.3.9.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.6.32-5.13.1
- (no CPE)range: < 0.6.32-5.13.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.6.32-5.13.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-5.13.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.6.32-5.13.1
- (no CPE)range: < 0.6.32-5.13.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.6.32-5.13.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-5.13.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.7-3.9.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
- (no CPE)range: < 0.6.32-32.15.1
Patches
Vulnerability mechanics
References
3- lists.debian.org/debian-lts-announce/2022/06/msg00009.htmlnvdMailing ListThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue Tracking
- lists.debian.org/debian-lts-announce/2023/06/msg00028.htmlnvd
News mentions
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