# CVE-2021-1820: gdm: GNOME is the default desktop environment of Red Hat Enterprise Linux. The following packages have been upgraded to a... CVE-2021-1820 is fixed in 18 products on 1 platform, first by RHSA-2021:1586, released May 18, 2021. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2021-1820 - Priority: Routine - CVSS: 6.5 (Moderate) - EPSS: 0.0134 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: May 18, 2021 ## Description GNOME is the default desktop environment of Red Hat Enterprise Linux. The following packages have been upgraded to a later upstream version: accountsservice (0.6.55), webkit2gtk3 (2.30.4). (BZ#1846376, BZ#1883304) Security Fix(es): * webkitgtk: type confusion may lead to arbitrary code execution (CVE-2020-9948) * webkitgtk: use-after-free may lead to arbitrary code execution (CVE-2020-9951) * webkitgtk: out-of-bounds write may lead to code execution (CVE-2020-9983) * webkitgtk: use-after-free may lead to arbitrary code execution (CVE-2020-13543) * webkitgtk: use-after-free may lead to arbitrary code execution (CVE-2020-13584) * glib2: insecure permissions for files and directories (CVE-2019-13012) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | gdm RHEL 8 | 1:3.28.3-39.el8 | [RHSA-2021:1586](https://patchblox.com/security/data/fix/linux/rhsa-2021-1586.md) | May 18, 2021 | | Linux | gir1.2-javascriptcoregtk-4.0 Ubuntu 18.04.6 LTS (bionic) | 2.30.3-0ubuntu0.18.04.1 | [gir1.2-javascriptcoregtk-4.0 2.30.3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gir1.2-javascriptcoregtk-4.0-2.30.3-0ubuntu0.18.04.1.md) | Sep 8, 2021 | | Linux | gir1.2-javascriptcoregtk-4.0 Ubuntu 20.04 LTS (focal) | 2.30.3-0ubuntu0.20.04.1 | [gir1.2-javascriptcoregtk-4.0 2.30.3-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-gir1.2-javascriptcoregtk-4.0-2.30.3-0ubuntu0.20.04.1.md) | Sep 8, 2021 | | Linux | gir1.2-webkit2-4.0 Ubuntu 18.04.6 LTS (bionic) | 2.30.3-0ubuntu0.18.04.1 | [gir1.2-webkit2-4.0 2.30.3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gir1.2-webkit2-4.0-2.30.3-0ubuntu0.18.04.1.md) | Sep 8, 2021 | | Linux | gir1.2-webkit2-4.0 Ubuntu 20.04 LTS (focal) | 2.30.3-0ubuntu0.20.04.1 | [gir1.2-webkit2-4.0 2.30.3-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-gir1.2-webkit2-4.0-2.30.3-0ubuntu0.20.04.1.md) | Sep 8, 2021 | | Linux | glib2 RHEL 8 | 0:2.56.4-9.el8 | [RHSA-2021:1586](https://patchblox.com/security/data/fix/linux/rhsa-2021-1586.md) | May 18, 2021 | | Linux | glib2-devel RHEL 8 | 0:2.56.4-9.el8 | [RHSA-2021:1586](https://patchblox.com/security/data/fix/linux/rhsa-2021-1586.md) | May 18, 2021 | | Linux | glib2-doc RHEL 8 | 0:2.56.4-9.el8 | [RHSA-2021:1586](https://patchblox.com/security/data/fix/linux/rhsa-2021-1586.md) | May 18, 2021 | | Linux | glib2-fam RHEL 8 | 0:2.56.4-9.el8 | [RHSA-2021:1586](https://patchblox.com/security/data/fix/linux/rhsa-2021-1586.md) | May 18, 2021 | | Linux | glib2-static RHEL 8 | 0:2.56.4-9.el8 | [RHSA-2021:1586](https://patchblox.com/security/data/fix/linux/rhsa-2021-1586.md) | May 18, 2021 | | Linux | glib2-tests RHEL 8 | 0:2.56.4-9.el8 | [RHSA-2021:1586](https://patchblox.com/security/data/fix/linux/rhsa-2021-1586.md) | May 18, 2021 | | Linux | libjavascriptcoregtk-4.0-18 Ubuntu 18.04.6 LTS (bionic) | 2.30.3-0ubuntu0.18.04.1 | [libjavascriptcoregtk-4.0-18 2.30.3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libjavascriptcoregtk-4.0-18-2.30.3-0ubuntu0.18.04.1.md) | Sep 8, 2021 | | Linux | libjavascriptcoregtk-4.0-18 Ubuntu 20.04 LTS (focal) | 2.30.3-0ubuntu0.20.04.1 | [libjavascriptcoregtk-4.0-18 2.30.3-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libjavascriptcoregtk-4.0-18-2.30.3-0ubuntu0.20.04.1.md) | Sep 8, 2021 | | Linux | libjavascriptcoregtk-4.0-bin Ubuntu 18.04.6 LTS (bionic) | 2.30.3-0ubuntu0.18.04.1 | [libjavascriptcoregtk-4.0-bin 2.30.3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libjavascriptcoregtk-4.0-bin-2.30.3-0ubuntu0.18.04.1.md) | Sep 8, 2021 | | Linux | libjavascriptcoregtk-4.0-bin Ubuntu 20.04 LTS (focal) | 2.30.3-0ubuntu0.20.04.1 | [libjavascriptcoregtk-4.0-bin 2.30.3-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libjavascriptcoregtk-4.0-bin-2.30.3-0ubuntu0.20.04.1.md) | Sep 8, 2021 | | Linux | libwebkit2gtk-4.0-37 Ubuntu 18.04.6 LTS (bionic) | 2.30.3-0ubuntu0.18.04.1 | [libwebkit2gtk-4.0-37 2.30.3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libwebkit2gtk-4.0-37-2.30.3-0ubuntu0.18.04.1.md) | Sep 8, 2021 | | Linux | libwebkit2gtk-4.0-37 Ubuntu 20.04 LTS (focal) | 2.30.3-0ubuntu0.20.04.1 | [libwebkit2gtk-4.0-37 2.30.3-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libwebkit2gtk-4.0-37-2.30.3-0ubuntu0.20.04.1.md) | Sep 8, 2021 | | Linux | libwebkit2gtk-4.0-37-gtk2 Ubuntu 18.04.6 LTS (bionic) | 2.30.3-0ubuntu0.18.04.1 | [libwebkit2gtk-4.0-37-gtk2 2.30.3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libwebkit2gtk-4.0-37-gtk2-2.30.3-0ubuntu0.18.04.1.md) | Sep 8, 2021 | | Linux | libwebkit2gtk-4.0-37-gtk2 Ubuntu 20.04 LTS (focal) | 2.30.3-0ubuntu0.20.04.1 | [libwebkit2gtk-4.0-37-gtk2 2.30.3-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libwebkit2gtk-4.0-37-gtk2-2.30.3-0ubuntu0.20.04.1.md) | Sep 8, 2021 | | Linux | webkit2gtk-driver Ubuntu 18.04.6 LTS (bionic) | 2.30.3-0ubuntu0.18.04.1 | [webkit2gtk-driver 2.30.3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-webkit2gtk-driver-2.30.3-0ubuntu0.18.04.1.md) | Sep 8, 2021 | | Linux | webkit2gtk-driver Ubuntu 20.04 LTS (focal) | 2.30.3-0ubuntu0.20.04.1 | [webkit2gtk-driver 2.30.3-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-webkit2gtk-driver-2.30.3-0ubuntu0.20.04.1.md) | Sep 8, 2021 | | Linux | webkit2gtk3 RHEL 8 | 0:2.30.4-1.el8 | [RHSA-2021:1586](https://patchblox.com/security/data/fix/linux/rhsa-2021-1586.md) | May 18, 2021 | | Linux | webkit2gtk3-devel RHEL 8 | 0:2.30.4-1.el8 | [RHSA-2021:1586](https://patchblox.com/security/data/fix/linux/rhsa-2021-1586.md) | May 18, 2021 | | Linux | webkit2gtk3-jsc RHEL 8 | 0:2.30.4-1.el8 | [RHSA-2021:1586](https://patchblox.com/security/data/fix/linux/rhsa-2021-1586.md) | May 18, 2021 | | Linux | webkit2gtk3-jsc-devel RHEL 8 | 0:2.30.4-1.el8 | [RHSA-2021:1586](https://patchblox.com/security/data/fix/linux/rhsa-2021-1586.md) | May 18, 2021 | --- Data as of 2026-11-08T13:06:02Z UTC. 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