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Vulnerabilities

Vulnerability · AZL-75207

CVE-2026-24401 affecting package avahi for versions less than 0.8-7

Published Jan 24, 2026 · catalog updated Oct 24, 2026 · affecting package avahi for

Last checked Oct 25, 2026. A connected source was read within the last 7 days.

Open the advisory

Exploitation likelihood is not on this record for AZL-75207. A missing EPSS score is not a low risk. Compare affecting package avahi for with the linked advisory before you change production.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (affecting package avahi for).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Awaiting synchronization with FIRST
Remediation
Not established
Affected products
Azure Linux:3 avahi

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Azure Linux:3 avahi0 → 0.8-7

How to fix AZL-75207

  • Upgrade

    AZL-75207 lists a fix boundary at 0.8-7. Compare the installed build with that boundary before you change production.

  • Version check

    Fixed in 0.8-7

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for AZL-75207. A missing EPSS score is not a low risk. Compare affecting package avahi for with the linked advisory before you change production.

Which versions are affected?

Compare what you have installed with 0 → 0.8-7. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS is not on this record yet. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 24, 2026 · OpenSSF OSV / OSV Scanner

    Detected

    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 recur

  2. Oct 24, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    avahi fixed in 0.8-7

  3. Oct 24, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    avahi fixed in 0.8-7

  4. Oct 24, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    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 recur

Sources

References

Freshness

Last verified in this catalog Oct 24, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • OpenSSF OSV / OSV ScannerOct 25, 2026