apitrace 2.0 through 14.0 Heap Buffer Overflow via SnappyFile::flushReadCache()

Advisories

apitrace 2.0 through 14.0 Heap Buffer Overflow via SnappyFile::flushReadCache()

Severity: high
Date: 11/10/2026
Affecting: apitrace >= 2.0, <= 14.0
CVE: CVE-2026-126050
CWE: CWE-122 Heap-based Buffer Overflow
CVSS: 8.5
CVSS V4 Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: https://github.com/apitrace/apitrace/commit/3890c5a448addfd75ccbe1bd09e3075de6fb3395
https://github.com/apitrace/apitrace/blob/18cfd388ac47a9e00978b34d6c20341f3e2cdb56/lib/trace/trace_file_snappy.cpp#L215-L235
Credit: Deus Rex
Description: apitrace 2.0 through 14.0 contains a heap-based buffer overflow in SnappyFile::flushReadCache() that allows attackers to write past m_compressedCache via an oversized compressed chunk length. Attackers can supply a crafted .trace file whose 4-byte chunk length exceeds the fixed buffer size, corrupting heap memory when users dump, inspect, or replay it.

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