GHSA-ch33-r734-vw2gMediumCVSS 3.7
flatcc through 0.6.4 contains an integer overflow vulnerability in the check_header function of...
🔗 CVE IDs covered (1)
📋 Description
flatcc through 0.6.4 contains an integer overflow vulnerability in the check_header function of the FlatBuffers verifier because its overflow guard is dead code. On 32-bit builds, attackers can supply a crafted buffer offset that wraps the bounds check, causing an out-of-bounds read before the buffer and crashing the process.
🔗 References (7)
- https://nvd.nist.gov/vuln/detail/CVE-2026-116734
- https://github.com/dvidelabs/flatcc/commit/0df9c097a19badc8bd22d93af8fd47bd291e5d9f
- https://github.com/dvidelabs/flatcc
- https://github.com/dvidelabs/flatcc/blob/v0.6.4/src/runtime/verifier.c#L126-L137
- https://hackmd.io/@haindpwn/flatcc-json-number-oob-read
- https://www.vulncheck.com/advisories/flatcc-through-0.6.4-out-of-bounds-read-via-verifier-check-header
- https://github.com/advisories/GHSA-ch33-r734-vw2g