CVE-2022-27046 Use after free in n/a

High 8.8 Published 8 Apr 2022 Updated 3 Aug 2024

A heap use-after-free flaw in libsixel allows attackers to potentially execute arbitrary code or cause a denial of service via crafted input.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2022-27046?

CVE-2022-27046 is a high-severity use after free vulnerability in n/a, published on 8 Apr 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

libsixel 1.8.6 suffers from a Heap Use After Free vulnerability in in libsixel/src/dither.c:388.

Weakness: CWE-416

Which versions are affected by CVE-2022-27046?

It affects 1 product.

Products include Saitoha Libsixel.

How do I fix CVE-2022-27046?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2022-27046 being exploited?

There is no known exploitation of CVE-2022-27046 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2022-27046, GHSA-h333-v9mv-m6g4, UBUNTU-CVE-2022-27046.