ALPINE-CVE-2026-5947
- Source
- https://security.alpinelinux.org/vuln/CVE-2026-5947
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-5947.json
- JSON Data
- https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-5947
- Upstream
- Published
- 2026-05-20T13:16:40.303Z
- Modified
- 2026-06-15T18:18:11.278417122Z
- Severity
-
- 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
Undefined behavior may result due to a race condition leading to a use-after-free violation. If BIND receives an incoming DNS message signed with SIG(0), it begins work to validate that signature. If, during that validation, the "recursive-clients" limit is reached (as would occur during a query flood), and that same DNS message is discarded per the limit, there is a brief window of time while the SIG(0) validation may attempt to read the now-discarded DNS message. This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and 9.20.9-S1 through 9.20.22-S1. BIND 9 versions 9.18.28 through 9.18.49 and 9.18.28-S1 through 9.18.49-S1 are NOT affected.
- References
Affected packages
Alpine:v3.20 / bind
Package
- Name
- bind
- Purl
- pkg:apk/alpine/bind?arch=source
Alpine:v3.21 / bind
Package
- Name
- bind
- Purl
- pkg:apk/alpine/bind?arch=source
Alpine:v3.22 / bind
Package
- Name
- bind
- Purl
- pkg:apk/alpine/bind?arch=source
Alpine:v3.23 / bind
Package
- Name
- bind
- Purl
- pkg:apk/alpine/bind?arch=source