Security context
What an agent needs to avoid regressing past fixes and find the next vuln in this repo.
OP-TEE/optee_client
master @ ba3dce7
3
Fixes
0
CVEs
HIGH
Peak severity
33.3%
Coverage
Highlights
Auth Bypass: 1 prior fix. Scrutinize any change in this area.
libckteec/src/serialize_ck.c: most-fixed (2 issues). Treat as high-risk during review.
3 high-severity fixes in this history; regressions here are high-impact.
Recurring patterns
The bug types that recur here, drawn from past fixes, not open vulnerabilities.
Integer Overflow leading to Heap Buffer Overflow: Serialization of parameter lengths uses uint32_t truncation without overflow checks, allowing oversized lengths to cause undersized buffer allocation and subsequent heap overflow.
Heap Buffer Overflow: Deserialization of CKA_ALLOWED_MECHANISMS uses wire-format (uint32_t) sizes but writes CK_ULONG (64-bit) values, causing buffer overflow on 64-bit builds due to mismatched size calculation.
Auth Bypass: RPMB emulation write operations lack MAC verification, allowing unauthorized modification of protected eMMC storage; fixed by adding HMAC-SHA256 authentication.