CVE-2020-37239
Critical · 9.8CVSS
9.8
EPSS
0.5%
Published
May 16, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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