# CVE-2021-28153: glib2: GLib provides the core application building blocks for libraries and applications written in C CVE-2021-28153 is fixed in 15 products on 1 platform, first by libglib2.0-0 2.56.4-0ubuntu0.18.04.8, released March 11, 2021. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2021-28153 - Priority: Routine - CVSS: 5.3 (Moderate) - EPSS: 0.0271 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Mar 11, 2021 ## Description GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures. Security Fix(es): * glib2: Possible privilege escalation thourgh pkexec and aliases (CVE-2021-3800) * glib: g_file_replace() with G_FILE_CREATE_REPLACE_DESTINATION creates empty target for dangling symlink (CVE-2021-28153) 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 8.5 Release Notes linked from the References section. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | glib2 RHEL 8 | 0:2.56.4-156.el8 | [RHSA-2021:4385](https://patchblox.com/security/data/fix/linux/rhsa-2021-4385.md) | Nov 9, 2021 | | Linux | glib2 ol 8 | 0:2.56.4-156.el8 | [ELSA-2021-4385](https://patchblox.com/security/data/fix/linux/elsa-2021-4385.md) | Nov 16, 2021 | | Linux | glib2 rocky 8 | 0:2.56.4-156.el8 | [RLSA-2021:4385](https://patchblox.com/security/data/fix/linux/rlsa-2021-4385.md) | Nov 9, 2021 | | Linux | glib2-devel RHEL 8 | 0:2.56.4-156.el8 | [RHSA-2021:4385](https://patchblox.com/security/data/fix/linux/rhsa-2021-4385.md) | Nov 9, 2021 | | Linux | glib2-devel ol 8 | 0:2.56.4-156.el8 | [ELSA-2021-4385](https://patchblox.com/security/data/fix/linux/elsa-2021-4385.md) | Nov 16, 2021 | | Linux | glib2-doc RHEL 8 | 0:2.56.4-156.el8 | [RHSA-2021:4385](https://patchblox.com/security/data/fix/linux/rhsa-2021-4385.md) | Nov 9, 2021 | | Linux | glib2-doc almalinux 8 | 2.56.4-156.el8 | [ALSA-2021:4385](https://patchblox.com/security/data/fix/linux/alsa-2021-4385.md) | Nov 9, 2021 | | Linux | glib2-doc ol 8 | 0:2.56.4-156.el8 | [ELSA-2021-4385](https://patchblox.com/security/data/fix/linux/elsa-2021-4385.md) | Nov 16, 2021 | | Linux | glib2-fam RHEL 8 | 0:2.56.4-156.el8 | [RHSA-2021:4385](https://patchblox.com/security/data/fix/linux/rhsa-2021-4385.md) | Nov 9, 2021 | | Linux | glib2-fam ol 8 | 0:2.56.4-156.el8 | [ELSA-2021-4385](https://patchblox.com/security/data/fix/linux/elsa-2021-4385.md) | Nov 16, 2021 | | Linux | glib2-static RHEL 8 | 0:2.56.4-156.el8 | [RHSA-2021:4385](https://patchblox.com/security/data/fix/linux/rhsa-2021-4385.md) | Nov 9, 2021 | | Linux | glib2-static almalinux 8 | 2.56.4-156.el8 | [ALSA-2021:4385](https://patchblox.com/security/data/fix/linux/alsa-2021-4385.md) | Nov 9, 2021 | | Linux | glib2-static ol 8 | 0:2.56.4-156.el8 | [ELSA-2021-4385](https://patchblox.com/security/data/fix/linux/elsa-2021-4385.md) | Nov 16, 2021 | | Linux | glib2-tests RHEL 8 | 0:2.56.4-156.el8 | [RHSA-2021:4385](https://patchblox.com/security/data/fix/linux/rhsa-2021-4385.md) | Nov 9, 2021 | | Linux | glib2-tests ol 8 | 0:2.56.4-156.el8 | [ELSA-2021-4385](https://patchblox.com/security/data/fix/linux/elsa-2021-4385.md) | Nov 16, 2021 | | Linux | libglib2.0-0 Ubuntu 18.04.6 LTS (bionic) | 2.56.4-0ubuntu0.18.04.8 | [libglib2.0-0 2.56.4-0ubuntu0.18.04.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libglib2.0-0-2.56.4-0ubuntu0.18.04.8.md) | Mar 11, 2021 | | Linux | libglib2.0-0 Ubuntu 20.04 LTS (focal) | 2.64.6-1~ubuntu20.04.3 | [libglib2.0-0 2.64.6-1~ubuntu20.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libglib2.0-0-2.64.6-1-ubuntu20.04.3.md) | Mar 11, 2021 | | Linux | libglib2.0-bin Ubuntu 18.04.6 LTS (bionic) | 2.56.4-0ubuntu0.18.04.8 | [libglib2.0-bin 2.56.4-0ubuntu0.18.04.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libglib2.0-bin-2.56.4-0ubuntu0.18.04.8.md) | Mar 11, 2021 | | Linux | libglib2.0-bin Ubuntu 20.04 LTS (focal) | 2.64.6-1~ubuntu20.04.3 | [libglib2.0-bin 2.64.6-1~ubuntu20.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libglib2.0-bin-2.64.6-1-ubuntu20.04.3.md) | Mar 11, 2021 | | Linux | libglib2.0-data Ubuntu 18.04.6 LTS (bionic) | 2.56.4-0ubuntu0.18.04.8 | [libglib2.0-data 2.56.4-0ubuntu0.18.04.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libglib2.0-data-2.56.4-0ubuntu0.18.04.8.md) | Mar 11, 2021 | | Linux | libglib2.0-data Ubuntu 20.04 LTS (focal) | 2.64.6-1~ubuntu20.04.3 | [libglib2.0-data 2.64.6-1~ubuntu20.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libglib2.0-data-2.64.6-1-ubuntu20.04.3.md) | Mar 11, 2021 | | Linux | libglib2.0-dev-bin Ubuntu 18.04.6 LTS (bionic) | 2.56.4-0ubuntu0.18.04.8 | [libglib2.0-dev-bin 2.56.4-0ubuntu0.18.04.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libglib2.0-dev-bin-2.56.4-0ubuntu0.18.04.8.md) | Mar 11, 2021 | | Linux | libglib2.0-dev-bin Ubuntu 20.04 LTS (focal) | 2.64.6-1~ubuntu20.04.3 | [libglib2.0-dev-bin 2.64.6-1~ubuntu20.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libglib2.0-dev-bin-2.64.6-1-ubuntu20.04.3.md) | Mar 11, 2021 | | Linux | libglib2.0-tests Ubuntu 18.04.6 LTS (bionic) | 2.56.4-0ubuntu0.18.04.8 | [libglib2.0-tests 2.56.4-0ubuntu0.18.04.8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libglib2.0-tests-2.56.4-0ubuntu0.18.04.8.md) | Mar 11, 2021 | | Linux | libglib2.0-tests Ubuntu 20.04 LTS (focal) | 2.64.6-1~ubuntu20.04.3 | [libglib2.0-tests 2.64.6-1~ubuntu20.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libglib2.0-tests-2.64.6-1-ubuntu20.04.3.md) | Mar 11, 2021 | | Linux | mingw32-glib2 RHEL 9 | 0:2.70.1-2.el9 | [RHSA-2022:8418](https://patchblox.com/security/data/fix/linux/rhsa-2022-8418.md) | Nov 15, 2022 | | Linux | mingw32-glib2 almalinux 9 | 2.70.1-2.el9 | [ALSA-2022:8418](https://patchblox.com/security/data/fix/linux/alsa-2022-8418.md) | Nov 15, 2022 | | Linux | mingw32-glib2 ol 9 | 0:2.70.1-2.el9 | [ELSA-2022-8418](https://patchblox.com/security/data/fix/linux/elsa-2022-8418.md) | Nov 22, 2022 | | Linux | mingw32-glib2-static RHEL 9 | 0:2.70.1-2.el9 | [RHSA-2022:8418](https://patchblox.com/security/data/fix/linux/rhsa-2022-8418.md) | Nov 15, 2022 | | Linux | mingw32-glib2-static almalinux 9 | 2.70.1-2.el9 | [ALSA-2022:8418](https://patchblox.com/security/data/fix/linux/alsa-2022-8418.md) | Nov 15, 2022 | | Linux | mingw32-glib2-static ol 9 | 0:2.70.1-2.el9 | [ELSA-2022-8418](https://patchblox.com/security/data/fix/linux/elsa-2022-8418.md) | Nov 22, 2022 | | Linux | mingw64-glib2 RHEL 9 | 0:2.70.1-2.el9 | [RHSA-2022:8418](https://patchblox.com/security/data/fix/linux/rhsa-2022-8418.md) | Nov 15, 2022 | | Linux | mingw64-glib2 almalinux 9 | 2.70.1-2.el9 | [ALSA-2022:8418](https://patchblox.com/security/data/fix/linux/alsa-2022-8418.md) | Nov 15, 2022 | | Linux | mingw64-glib2 ol 9 | 0:2.70.1-2.el9 | [ELSA-2022-8418](https://patchblox.com/security/data/fix/linux/elsa-2022-8418.md) | Nov 22, 2022 | | Linux | mingw64-glib2-static RHEL 9 | 0:2.70.1-2.el9 | [RHSA-2022:8418](https://patchblox.com/security/data/fix/linux/rhsa-2022-8418.md) | Nov 15, 2022 | | Linux | mingw64-glib2-static almalinux 9 | 2.70.1-2.el9 | [ALSA-2022:8418](https://patchblox.com/security/data/fix/linux/alsa-2022-8418.md) | Nov 15, 2022 | | Linux | mingw64-glib2-static ol 9 | 0:2.70.1-2.el9 | [ELSA-2022-8418](https://patchblox.com/security/data/fix/linux/elsa-2022-8418.md) | Nov 22, 2022 | --- Data as of 2026-11-08T13:06:02Z UTC. 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