CVE-2026-88355
UNKNOWN
NVD
CVSS Score
0
Severity
UNKNOWN
Published
Sep 24, 2026
Vendor
unknown
Description
An incorrect buffer size calculation vulnerability exists in tinyexpr commit 4a7456e in new_expr(). For arity-0 expression nodes, including constants, variables, and zero-argument functions, the function allocates less memory than sizeof(te_expr) but treats the returned allocation as a complete te_expr object. This results in undefined behavior and can cause deterministic process termination in UBSan-instrumented builds.