ALPINE-CVE-2026-12340
- Source
- https://security.alpinelinux.org/vuln/CVE-2026-12340
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-12340.json
- JSON Data
- https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-12340
- Upstream
- Published
- 2026-06-25T20:17:09Z
- Modified
- 2026-11-03T06:32:52Z
- 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
-
Out-of-bounds heap read during SM2/SM3 certificate signature verification. When parsing a certificate with an SM3wSM2 signature, the Subject Key Identifier computation reads the trailing 65 bytes of the public key without checking that the key is at least that long. A public key shorter than 65 bytes results in an out-of-bounds heap read, leading to a potential crash (denial of service); there is no out-of-bounds write. Note this only affects builds with SM2 support (--enable-sm2 or --enable-all).
- References