VULNERABILITY INTELLIGENCE
CVE-2020-37239
CVSS score9.3 CRITICAL
EPSS probability0.46%
CISA KEVNot currently listed
Published2026-05-16
Last modified2026-09-29
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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.
Weakness classification
- CWE-415: Double Free