CVE-2022-42856 Apple iOS Type Confusion
A type confusion vulnerability in Safari allows arbitrary code execution via malicious web content, requiring users to update their Apple devices.
- Exploited in the wild
- Since 14 Dec 2022
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2022-42856?
CVE-2022-42856 is a high-severity memory corruption vulnerability in Apple Ipados, published on 15 Dec 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
A type confusion issue was addressed with improved state handling. This issue is fixed in Safari 16.2, tvOS 16.2, macOS Ventura 13.1, iOS 15.7.2 and iPadOS 15.7.2, iOS 16.1.2. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.1..
Weakness: CWE-843
Which versions are affected by CVE-2022-42856?
It affects 5 products.
Linux distribution packages (34)
webkit2gtk3 AlmaLinux:8 | All versions | 2.36.7-1.el8_7.1 |
webkit2gtk3-devel AlmaLinux:8 | All versions | 2.36.7-1.el8_7.1 |
webkit2gtk3-jsc AlmaLinux:8 | All versions | 2.36.7-1.el8_7.1 |
webkit2gtk3-jsc-devel AlmaLinux:8 | All versions | 2.36.7-1.el8_7.1 |
webkit2gtk3 AlmaLinux:9 | All versions | 2.36.7-1.el9_1.1 |
webkit2gtk3-devel AlmaLinux:9 | All versions | 2.36.7-1.el9_1.1 |
webkit2gtk3-jsc AlmaLinux:9 | All versions | 2.36.7-1.el9_1.1 |
webkit2gtk3-jsc-devel AlmaLinux:9 | All versions | 2.36.7-1.el9_1.1 |
webkit2gtk3 Red Hat:enterprise_linux:8::appstream | All versions | 0:2.36.7-1.el8_7.1 |
webkit2gtk3-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.36.7-1.el8_7.1 |
webkit2gtk3-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:2.36.7-1.el8_7.1 |
webkit2gtk3-devel Red Hat:enterprise_linux:8::appstream | All versions | 0:2.36.7-1.el8_7.1 |
webkit2gtk3-devel-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.36.7-1.el8_7.1 |
webkit2gtk3-jsc Red Hat:enterprise_linux:8::appstream | All versions | 0:2.36.7-1.el8_7.1 |
webkit2gtk3-jsc-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.36.7-1.el8_7.1 |
webkit2gtk3-jsc-devel Red Hat:enterprise_linux:8::appstream | All versions | 0:2.36.7-1.el8_7.1 |
webkit2gtk3-jsc-devel-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.36.7-1.el8_7.1 |
webkit2gtk3 Red Hat:enterprise_linux:9::appstream | All versions | 0:2.36.7-1.el9_1.1 |
webkit2gtk3-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:2.36.7-1.el9_1.1 |
webkit2gtk3-debugsource Red Hat:enterprise_linux:9::appstream | All versions | 0:2.36.7-1.el9_1.1 |
webkit2gtk3-devel Red Hat:enterprise_linux:9::appstream | All versions | 0:2.36.7-1.el9_1.1 |
webkit2gtk3-devel-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:2.36.7-1.el9_1.1 |
webkit2gtk3-jsc Red Hat:enterprise_linux:9::appstream | All versions | 0:2.36.7-1.el9_1.1 |
webkit2gtk3-jsc-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:2.36.7-1.el9_1.1 |
webkit2gtk3-jsc-devel Red Hat:enterprise_linux:9::appstream | All versions | 0:2.36.7-1.el9_1.1 |
webkit2gtk3-jsc-devel-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:2.36.7-1.el9_1.1 |
webkit2gtk3 Rocky Linux:8 | All versions | 0:2.36.7-1.el8_7.1 |
webkit2gtk3 Rocky Linux:9 | All versions | 0:2.36.7-1.el9_1.1 |
webkit2gtk3-soup2 SUSE:Linux Enterprise Module for Basesystem 15 SP4 | All versions | 2.38.3-150400.4.25.1 |
webkit2gtk3 SUSE:Linux Enterprise Module for Desktop Applications 15 SP4 | All versions | 2.38.3-150400.4.25.1 |
webkit2gtk4 SUSE:Linux Enterprise Module for Development Tools 15 SP4 | All versions | 2.38.3-150400.4.25.1 |
webkit2gtk3 openSUSE:Leap 15.4 | All versions | 2.38.3-150400.4.25.1 |
webkit2gtk3-soup2 openSUSE:Leap 15.4 | All versions | 2.38.3-150400.4.25.1 |
webkit2gtk4 openSUSE:Leap 15.4 | All versions | 2.38.3-150400.4.25.1 |
Products include Apple Ipados, Apple Iphone Os, Apple Macos, Apple Safari, Apple Tvos.
How do I fix CVE-2022-42856?
Upgrade to a fixed version. US federal agencies must fix it by 4 Jan 2023.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-42856 being exploited?
Yes. Attackers have exploited CVE-2022-42856 in the wild since at least 14 Dec 2022.
Other vulnerabilities in Apple Ipados
- CVE-2025-43300 Apple iOS, iPadOS, and macOS Out-of-Bounds Write
- CVE-2025-24201 Apple Multiple Products WebKit Out-of-Bounds Write
- CVE-2025-24085 Apple Multiple Products Use-After-Free
- CVE-2025-31200 Apple Multiple Products Memory Corruption
- CVE-2025-31201 Apple Multiple Products Arbitrary Read and Write
Sources
Also known as ALSA-2023:0016, ALSA-2023:0021, DEBIAN-CVE-2022-42856, GHSA-qh2r-8xvg-hm24, RHSA-2023:0016, RHSA-2023:0021 and 4 more.