CVE-2020-37239 (GCVE-0-2020-37239)

Vulnerability from cvelistv5 – Published: 2026-05-16 15:25 – Updated: 2026-05-18 18:09
VLAI
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
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-18 18:08 UTC
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6903 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Gegl libbabl Affected: 0.1.62
    cpe:2.3:a:gegl:gegl:0.1.62:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2020-12-14 00:00
Credits
Carter Yagemann
Show details on NVD website
To clipboard 

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