CVE-2020-37239
CRITICAL
NVD
CVSS Score
9.8
Severity
CRITICAL
Published
May 16, 2026
Vendor
unknown
Description
libbabl 0.1.62 contains a broken double free detection vulnerability that allows attackers to bypass memory safety checks by exploiting signature overwriting in freed chunks. Attackers can call babl_free() twice on the same pointer without triggering detection, as libc's malloc metadata overwrites babl's signature field upon freeing, enabling potential memory corruption and code execution.