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A flaw was found in avahi 0.8-5. A reachable assertion is present in avahi_s_host_name_resolver_start function allowing a local attacker to crash the avahi service by requesting hostname resolutions through the avahi socket or dbus methods for invalid hostnames. The highest threat from this vulnerability is to the service availability.
| Reporter | Title | Published | Views | Family All 43 |
|---|---|---|---|---|
 | CVE-2021-3502 | 7 May 202111:46 | – | alpinelinux |
 | Moderate: avahi security update | 7 Nov 202300:00 | – | almalinux |
 | Scanvus now supports Vulners and Vulns.io VM Linux vulnerability detection APIs | 30 Dec 202218:03 | – | avleonov |
 | CVE-2021-3502 affecting package avahi for versions less than 0.8-1 | 19 Mar 202417:21 | – | cbl_mariner |
 | avahi 安全漏洞 | 7 May 202100:00 | – | cnnvd |
 | CVE-2021-3502 | 7 May 202111:46 | – | cve |
 | CVE-2021-3502 | 7 May 202111:46 | – | cvelist |
 | CVE-2021-3502 | 7 May 202111:46 | – | debiancve |
 | avahi security update | 11 Nov 202300:00 | – | oraclelinux |
 | EUVD-2021-26822 | 7 Oct 202500:30 | – | euvd |
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18 Feb 2026 22:15Current
7.4High risk
Vulners AI Score7.4
CVSS 22.1
CVSS 3.15.5
EPSS0.00032