Protobuf-c v1.4.0 was discovered to contain an invalid arithmetic shift via the function parse_tag_and_wiretype in protobuf-c/protobuf-c.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via unspecified vectors.
Fix
Patch, vendor advisory and mitigation references on NVD 4
- https://github.com/protobuf-c/protobuf-c/issues/506 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/protobuf-c/protobuf-c/pull/508 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/protobuf-c/protobuf-c/issues/506 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/protobuf-c/protobuf-c/pull/508 Exploit, Issue Tracking, Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.5 · protobuf-c_project, fedoraprojectNVD modified 2026-10-08 21:17
Affected (CPE criteria) 2
cpe:2.3:a:protobuf-c_project:protobuf-c:1.4.0:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
References 6
- https://github.com/protobuf-c/protobuf-c/issues/506 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/protobuf-c/protobuf-c/pull/508 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FFN2GHUEGTSHRD7J5PKQ5DRSJSEQ2IKN/
- https://github.com/protobuf-c/protobuf-c/issues/506 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/protobuf-c/protobuf-c/pull/508 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FFN2GHUEGTSHRD7J5PKQ5DRSJSEQ2IKN/