CVE-2022-42856

webkitgtk: processing maliciously crafted web content may lead to an arbitrary code execution

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Severity

Important

Red Hat Product Security

8.8

CVSS 3.1

Review impact separately from score.

Published · December 14, 2022

Updated · November 1, 2026

Description

A vulnerability was found in webkitgtk, where a type confusion issue was addressed with improved memory handling. By this security flaw processing maliciously crafted web content may lead to arbitrary code execution.

Statement

Red Hat is not aware of any exploitation of this flaw in Linux platforms at this time.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Setting the environment variable JSC_useFTLJIT=0 will disable the vulnerable code. (This will also somewhat slow down JavaScript execution.)

CVSS / CWE

CVSS 3.1 · 8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE-843 · Access of Resource Using Incompatible Type