CVE-2020-37239 (GCVE-0-2020-37239)
Vulnerability from cvelistv5 – Published: 2026-05-16 15:25 – Updated: 2026-05-18 18:09
VLAI
EPSS
VEX
Title
libbabl 0.1.62 Broken Double Free Detection Memory Safety
Summary
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.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-18 18:08 UTC
CWE
- CWE-415 - Double Free
Assigner
VulnCheck
CNA
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/49259 | exploit |
| https://www.gegl.org | product |
| https://www.gegl.org/babl/ | product |
| https://www.vulncheck.com/advisories/libbabl-brok… | third-party-advisory |
Impacted products
Date Public
2020-12-14 00:00
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