CVE-2020-37239

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.exploit-db.com/exploits/49259
https://www.gegl.org
https://www.gegl.org/babl/
https://www.vulncheck.com/advisories/libbabl-broken-double-free-detection-memory-safety

Configurations

No configuration.

History

16 May 2026, 16:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-16 16:16

Updated : 2026-05-18 20:16

NVD link : CVE-2020-37239

Mitre link : CVE-2020-37239

CVE.ORG link : CVE-2020-37239

JSON object : View

Products Affected

No product.

CWE

CWE-415

Double Free

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