AZL-65553

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Import Source

https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-65553.json

JSON Data

https://api.osv.dev/v1/vulns/AZL-65553

Upstream

CVE-2025-40777

Published

2025-07-16T18:15:24Z

Modified

2026-04-21T04:32:40.960354Z

Summary

CVE-2025-40777 affecting package bind for versions less than 9.20.15-1

Details

If a named caching resolver is configured with serve-stale-enable yes, and with stale-answer-client-timeout set to 0 (the only allowable value other than disabled), and if the resolver, in the process of resolving a query, encounters a CNAME chain involving a specific combination of cached or authoritative records, the daemon will abort with an assertion failure. This issue affects BIND 9 versions 9.20.0 through 9.20.10, 9.21.0 through 9.21.9, and 9.20.9-S1 through 9.20.10-S1.

References

https://nvd.nist.gov/vuln/detail/CVE-2025-40777

Affected packages

Azure Linux:3 / bind

Package

Name: bind
Purl: pkg:rpm/azure-linux/bind

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

9.20.15-1

Database specific

source

"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-65553.json"