CVE Vulnerabilities

CVE-2021-46700

Double Free

Published: Feb 19, 2022 | Modified: Mar 01, 2022

CVSS 3.x

6.5

MEDIUM

Source:

NVD

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

CVSS 2.x

4.3 MEDIUM

RedHat/V2

RedHat/V3

Ubuntu

Additional information

NVD	https://nvd.nist.gov/vuln/detail/CVE-2021-46700
CWE	https://cwe.mitre.org/data/definitions/415.html

In libsixel 1.8.6, sixel_encoder_output_without_macro (called from sixel_encoder_encode_frame in encoder.c) has a double free.

Weakness

The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.

Affected Software

Name	Vendor	Start Version	End Version
Libsixel	Libsixel_project	1.8.6 (including)	1.8.6 (including)

Potential Mitigations

References

https://github.com/saitoha/libsixel/issues/158

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