ALPINE-CVE-2026-33630
- Source
- https://security.alpinelinux.org/vuln/CVE-2026-33630
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-33630.json
- JSON Data
- https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-33630
- Upstream
- Published
- 2026-09-03T19:17:27.420Z
- Modified
- 2026-09-04T08:30:02.769494978Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
c-ares is an asynchronous resolver library. From ver 1.32.3 until 1.34.7, a use-after-free / double-free in c-ares' query-completion handling. The same flaw — a query's callback being invoked while the query is still linked in the channel's internal lookup structures — is present at multiple points in the resend/finish path (timeout handling, response handling, and query dispatch). If the query, or for aresgetaddrinfo() the owning hostquery, is freed as a side effect of that callback, it is then accessed and/or freed a second time. This vulnerability is fixed in ver 1.34.7.
- References
Affected packages
Alpine:v3.21 / c-ares
Package
- Name
- c-ares
- Purl
- pkg:apk/alpine/c-ares?arch=source
Alpine:v3.22 / c-ares
Package
- Name
- c-ares
- Purl
- pkg:apk/alpine/c-ares?arch=source
Alpine:v3.23 / c-ares
Package
- Name
- c-ares
- Purl
- pkg:apk/alpine/c-ares?arch=source