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CVE

CWE

Training

CVE-2020-37239

Published: May 16, 2026

Modified: May 18, 2026

PUBLISHED

CVSS v3.1

9.8

CRITICAL

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.

Vendor	Product	Versions
Gegl	libbabl	affected `0.1.62`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

ExploitDB-49259

exploit

Official Product Homepage

product

Product Reference

product

VulnCheck Advisory: libbabl 0.1.62 Broken Double Free Detection Memory Safety

third-party-advisory

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