# CVE-2023-39434: libjavascriptcoregtk-4.0-18: A use-after-free issue was addressed with improved memory management

CVE-2023-39434 is fixed in 20 products on 1 platform, first by gir1.2-javascriptcoregtk-4.0 2.40.5-0ubuntu0.22.04.1, released September 27, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-39434
- Priority: High
- CVSS: 8.8 (Medium)
- EPSS: 0.0165
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 27, 2023

## Description

A use-after-free issue was addressed with improved memory management. This issue is fixed in iOS 17 and iPadOS 17, watchOS 10, macOS Sonoma 14. Processing web content may lead to arbitrary code execution.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gir1.2-javascriptcoregtk-4.0 Ubuntu 22.04.1 LTS (jammy) | 2.40.5-0ubuntu0.22.04.1 | [gir1.2-javascriptcoregtk-4.0 2.40.5-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gir1.2-javascriptcoregtk-4.0-2.40.5-0ubuntu0.22.04.1.md) | Sep 27, 2023 |
| Linux | gir1.2-javascriptcoregtk-4.1 Ubuntu 22.04.1 LTS (jammy) | 2.40.5-0ubuntu0.22.04.1 | [gir1.2-javascriptcoregtk-4.1 2.40.5-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gir1.2-javascriptcoregtk-4.1-2.40.5-0ubuntu0.22.04.1.md) | Sep 27, 2023 |
| Linux | gir1.2-javascriptcoregtk-6.0 Ubuntu 22.04.1 LTS (jammy) | 2.40.5-0ubuntu0.22.04.1 | [gir1.2-javascriptcoregtk-6.0 2.40.5-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gir1.2-javascriptcoregtk-6.0-2.40.5-0ubuntu0.22.04.1.md) | Sep 27, 2023 |
| Linux | gir1.2-webkit-6.0 Ubuntu 22.04.1 LTS (jammy) | 2.40.5-0ubuntu0.22.04.1 | [gir1.2-webkit-6.0 2.40.5-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gir1.2-webkit-6.0-2.40.5-0ubuntu0.22.04.1.md) | Sep 27, 2023 |
| Linux | gir1.2-webkit2-4.0 Ubuntu 22.04.1 LTS (jammy) | 2.40.5-0ubuntu0.22.04.1 | [gir1.2-webkit2-4.0 2.40.5-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gir1.2-webkit2-4.0-2.40.5-0ubuntu0.22.04.1.md) | Sep 27, 2023 |
| Linux | gir1.2-webkit2-4.1 Ubuntu 22.04.1 LTS (jammy) | 2.40.5-0ubuntu0.22.04.1 | [gir1.2-webkit2-4.1 2.40.5-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gir1.2-webkit2-4.1-2.40.5-0ubuntu0.22.04.1.md) | Sep 27, 2023 |
| Linux | libjavascriptcoregtk-4.0-18 Ubuntu 22.04.1 LTS (jammy) | 2.40.5-0ubuntu0.22.04.1 | [libjavascriptcoregtk-4.0-18 2.40.5-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libjavascriptcoregtk-4.0-18-2.40.5-0ubuntu0.22.04.1.md) | Sep 27, 2023 |
| Linux | libjavascriptcoregtk-4.0-bin Ubuntu 22.04.1 LTS (jammy) | 2.40.5-0ubuntu0.22.04.1 | [libjavascriptcoregtk-4.0-bin 2.40.5-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libjavascriptcoregtk-4.0-bin-2.40.5-0ubuntu0.22.04.1.md) | Sep 27, 2023 |
| Linux | libjavascriptcoregtk-4.1-0 Ubuntu 22.04.1 LTS (jammy) | 2.40.5-0ubuntu0.22.04.1 | [libjavascriptcoregtk-4.1-0 2.40.5-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libjavascriptcoregtk-4.1-0-2.40.5-0ubuntu0.22.04.1.md) | Sep 27, 2023 |
| Linux | libjavascriptcoregtk-6.0-1 Ubuntu 22.04.1 LTS (jammy) | 2.40.5-0ubuntu0.22.04.1 | [libjavascriptcoregtk-6.0-1 2.40.5-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libjavascriptcoregtk-6.0-1-2.40.5-0ubuntu0.22.04.1.md) | Sep 27, 2023 |
| Linux | libwebkit2gtk-4.0-37 Ubuntu 22.04.1 LTS (jammy) | 2.40.5-0ubuntu0.22.04.1 | [libwebkit2gtk-4.0-37 2.40.5-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libwebkit2gtk-4.0-37-2.40.5-0ubuntu0.22.04.1.md) | Sep 27, 2023 |
| Linux | libwebkit2gtk-4.1-0 Ubuntu 22.04.1 LTS (jammy) | 2.40.5-0ubuntu0.22.04.1 | [libwebkit2gtk-4.1-0 2.40.5-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libwebkit2gtk-4.1-0-2.40.5-0ubuntu0.22.04.1.md) | Sep 27, 2023 |
| Linux | libwebkitgtk-6.0-4 Ubuntu 22.04.1 LTS (jammy) | 2.40.5-0ubuntu0.22.04.1 | [libwebkitgtk-6.0-4 2.40.5-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libwebkitgtk-6.0-4-2.40.5-0ubuntu0.22.04.1.md) | Sep 27, 2023 |
| Linux | webkit2gtk Debian 12.15 (bookworm) | 2.40.5-1~deb12u1 | [DEBIAN-CVE-2023-39434](https://patchblox.com/security/data/fix/linux/debian-cve-2023-39434.md) | Sep 27, 2023 |
| Linux | webkit2gtk Debian 13.5 (trixie) | 2.40.5-1 | [DEBIAN-CVE-2023-39434](https://patchblox.com/security/data/fix/linux/debian-cve-2023-39434.md) | Sep 27, 2023 |
| Linux | webkit2gtk Debian 14 | 2.40.5-1 | [DEBIAN-CVE-2023-39434](https://patchblox.com/security/data/fix/linux/debian-cve-2023-39434.md) | Sep 27, 2023 |
| Linux | webkit2gtk-driver Ubuntu 22.04.1 LTS (jammy) | 2.40.5-0ubuntu0.22.04.1 | [webkit2gtk-driver 2.40.5-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-webkit2gtk-driver-2.40.5-0ubuntu0.22.04.1.md) | Sep 27, 2023 |
| Linux | webkit2gtk3 almalinux 8 | 2.40.5-1.el8 | [ALSA-2023:7055](https://patchblox.com/security/data/fix/linux/alsa-2023-7055.md) | Nov 14, 2023 |
| Linux | webkit2gtk3 almalinux 9 | 2.40.5-1.el9 | [ALSA-2023:6535](https://patchblox.com/security/data/fix/linux/alsa-2023-6535.md) | Nov 7, 2023 |
| Linux | webkit2gtk3 ol 8 | 0:2.40.5-1.el8 | [ELSA-2023-7055](https://patchblox.com/security/data/fix/linux/elsa-2023-7055.md) | Nov 17, 2023 |
| Linux | webkit2gtk3 ol 9 | 0:2.40.5-1.el9 | [ELSA-2023-6535](https://patchblox.com/security/data/fix/linux/elsa-2023-6535.md) | Nov 11, 2023 |
| Linux | webkit2gtk3-devel almalinux 8 | 2.40.5-1.el8 | [ALSA-2023:7055](https://patchblox.com/security/data/fix/linux/alsa-2023-7055.md) | Nov 14, 2023 |
| Linux | webkit2gtk3-devel almalinux 9 | 2.40.5-1.el9 | [ALSA-2023:6535](https://patchblox.com/security/data/fix/linux/alsa-2023-6535.md) | Nov 7, 2023 |
| Linux | webkit2gtk3-devel ol 8 | 0:2.40.5-1.el8 | [ELSA-2023-7055](https://patchblox.com/security/data/fix/linux/elsa-2023-7055.md) | Nov 17, 2023 |
| Linux | webkit2gtk3-devel ol 9 | 0:2.40.5-1.el9 | [ELSA-2023-6535](https://patchblox.com/security/data/fix/linux/elsa-2023-6535.md) | Nov 11, 2023 |
| Linux | webkit2gtk3-jsc almalinux 8 | 2.40.5-1.el8 | [ALSA-2023:7055](https://patchblox.com/security/data/fix/linux/alsa-2023-7055.md) | Nov 14, 2023 |
| Linux | webkit2gtk3-jsc almalinux 9 | 2.40.5-1.el9 | [ALSA-2023:6535](https://patchblox.com/security/data/fix/linux/alsa-2023-6535.md) | Nov 7, 2023 |
| Linux | webkit2gtk3-jsc ol 8 | 0:2.40.5-1.el8 | [ELSA-2023-7055](https://patchblox.com/security/data/fix/linux/elsa-2023-7055.md) | Nov 17, 2023 |
| Linux | webkit2gtk3-jsc ol 9 | 0:2.40.5-1.el9 | [ELSA-2023-6535](https://patchblox.com/security/data/fix/linux/elsa-2023-6535.md) | Nov 11, 2023 |
| Linux | webkit2gtk3-jsc-devel almalinux 8 | 2.40.5-1.el8 | [ALSA-2023:7055](https://patchblox.com/security/data/fix/linux/alsa-2023-7055.md) | Nov 14, 2023 |
| Linux | webkit2gtk3-jsc-devel almalinux 9 | 2.40.5-1.el9 | [ALSA-2023:6535](https://patchblox.com/security/data/fix/linux/alsa-2023-6535.md) | Nov 7, 2023 |
| Linux | webkit2gtk3-jsc-devel ol 8 | 0:2.40.5-1.el8 | [ELSA-2023-7055](https://patchblox.com/security/data/fix/linux/elsa-2023-7055.md) | Nov 17, 2023 |
| Linux | webkit2gtk3-jsc-devel ol 9 | 0:2.40.5-1.el9 | [ELSA-2023-6535](https://patchblox.com/security/data/fix/linux/elsa-2023-6535.md) | Nov 11, 2023 |
| Linux | wpewebkit Debian 13.5 (trixie) | 2.40.5-1 | [DEBIAN-CVE-2023-39434](https://patchblox.com/security/data/fix/linux/debian-cve-2023-39434.md) | Sep 27, 2023 |
| Linux | wpewebkit Debian 14 | 2.40.5-1 | [DEBIAN-CVE-2023-39434](https://patchblox.com/security/data/fix/linux/debian-cve-2023-39434.md) | Sep 27, 2023 |

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