# CVE-2021-4034: polkit: The polkit packages provide a component for controlling system-wide privileges CVE-2021-4034 is fixed in 12 products on 1 platform, first by DSA-5059-1, released January 25, 2022. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on June 27, 2022, with known ransomware use. Patch Radar priority: Patch now. - Web page: https://patchblox.com/security/cve/CVE-2021-4034 - Priority: Patch now - CVSS: 7.8 (Important) - EPSS: 0.9492 - CISA KEV: listed Jun 27, 2022, federal due date Jul 18, 2022, known ransomware use - Exploited (vendor report): no - Publicly disclosed: no - Published: Jan 25, 2022 ## Description The polkit packages provide a component for controlling system-wide privileges. This component provides a uniform and organized way for non-privileged processes to communicate with privileged ones. Security Fix(es): * polkit: Local privilege escalation in pkexec due to incorrect handling of argument vector (CVE-2021-4034) 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. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | gir1.2-polkit-1.0 Ubuntu 18.04.6 LTS (bionic) | 0.105-20ubuntu0.18.04.6 | [gir1.2-polkit-1.0 0.105-20ubuntu0.18.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gir1.2-polkit-1.0-0.105-20ubuntu0.18.04.6.md) | Jan 25, 2022 | | Linux | gir1.2-polkit-1.0 Ubuntu 20.04 LTS (focal) | 0.105-26ubuntu1.2 | [gir1.2-polkit-1.0 0.105-26ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-gir1.2-polkit-1.0-0.105-26ubuntu1.2.md) | Jan 25, 2022 | | Linux | gir1.2-polkit-1.0 Ubuntu 22.04.1 LTS (jammy) | 0.105-31ubuntu1 | [gir1.2-polkit-1.0 0.105-31ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gir1.2-polkit-1.0-0.105-31ubuntu1.md) | Jan 25, 2022 | | Linux | libpolkit-agent-1-0 Ubuntu 18.04.6 LTS (bionic) | 0.105-20ubuntu0.18.04.6 | [libpolkit-agent-1-0 0.105-20ubuntu0.18.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libpolkit-agent-1-0-0.105-20ubuntu0.18.04.6.md) | Jan 25, 2022 | | Linux | libpolkit-agent-1-0 Ubuntu 20.04 LTS (focal) | 0.105-26ubuntu1.2 | [libpolkit-agent-1-0 0.105-26ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libpolkit-agent-1-0-0.105-26ubuntu1.2.md) | Jan 25, 2022 | | Linux | libpolkit-agent-1-0 Ubuntu 22.04.1 LTS (jammy) | 0.105-31ubuntu1 | [libpolkit-agent-1-0 0.105-31ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libpolkit-agent-1-0-0.105-31ubuntu1.md) | Jan 25, 2022 | | Linux | libpolkit-backend-1-0 Ubuntu 18.04.6 LTS (bionic) | 0.105-20ubuntu0.18.04.6 | [libpolkit-backend-1-0 0.105-20ubuntu0.18.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libpolkit-backend-1-0-0.105-20ubuntu0.18.04.6.md) | Jan 25, 2022 | | Linux | libpolkit-gobject-1-0 Ubuntu 18.04.6 LTS (bionic) | 0.105-20ubuntu0.18.04.6 | [libpolkit-gobject-1-0 0.105-20ubuntu0.18.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libpolkit-gobject-1-0-0.105-20ubuntu0.18.04.6.md) | Jan 25, 2022 | | Linux | libpolkit-gobject-1-0 Ubuntu 20.04 LTS (focal) | 0.105-26ubuntu1.2 | [libpolkit-gobject-1-0 0.105-26ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libpolkit-gobject-1-0-0.105-26ubuntu1.2.md) | Jan 25, 2022 | | Linux | libpolkit-gobject-1-0 Ubuntu 22.04.1 LTS (jammy) | 0.105-31ubuntu1 | [libpolkit-gobject-1-0 0.105-31ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libpolkit-gobject-1-0-0.105-31ubuntu1.md) | Jan 25, 2022 | | Linux | policykit-1 Debian 11.6 (bullseye) | 0.105-31+deb11u1 | [DSA-5059-1](https://patchblox.com/security/data/fix/linux/dsa-5059-1.md) | Jan 25, 2022 | | Linux | policykit-1 Debian 12.15 (bookworm) | 0.105-31.1 | [DEBIAN-CVE-2021-4034](https://patchblox.com/security/data/fix/linux/debian-cve-2021-4034.md) | Jan 28, 2022 | | Linux | policykit-1 Debian 13.5 (trixie) | 0.105-31.1 | [DEBIAN-CVE-2021-4034](https://patchblox.com/security/data/fix/linux/debian-cve-2021-4034.md) | Jan 28, 2022 | | Linux | policykit-1 Debian 14 | 0.105-31.1 | [DEBIAN-CVE-2021-4034](https://patchblox.com/security/data/fix/linux/debian-cve-2021-4034.md) | Jan 28, 2022 | | Linux | policykit-1 Ubuntu 18.04.6 LTS (bionic) | 0.105-20ubuntu0.18.04.6 | [policykit-1 0.105-20ubuntu0.18.04.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-policykit-1-0.105-20ubuntu0.18.04.6.md) | Jan 25, 2022 | | Linux | policykit-1 Ubuntu 20.04 LTS (focal) | 0.105-26ubuntu1.2 | [policykit-1 0.105-26ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-policykit-1-0.105-26ubuntu1.2.md) | Jan 25, 2022 | | Linux | policykit-1 Ubuntu 22.04.1 LTS (jammy) | 0.105-31ubuntu1 | [policykit-1 0.105-31ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-policykit-1-0.105-31ubuntu1.md) | Jan 25, 2022 | | Linux | polkit RHEL 8 | 0:0.115-13.el8_5.1 | [RHSA-2022:0267](https://patchblox.com/security/data/fix/linux/rhsa-2022-0267.md) | Jan 25, 2022 | | Linux | polkit almalinux 8 | 0.115-13.el8_5.2 | [ALSA-2022:0267](https://patchblox.com/security/data/fix/linux/alsa-2022-0267.md) | Jan 25, 2022 | | Linux | polkit amzn 2023 | 0.117-10.amzn2023.0.3 | [ALAS2023-2023-026](https://patchblox.com/security/data/fix/linux/alas2023-2023-026.md) | Feb 17, 2023 | | Linux | polkit ol 8 | 0:0.115-13.0.1.el8_5.1 | [ELSA-2022-0267](https://patchblox.com/security/data/fix/linux/elsa-2022-0267.md) | Jan 25, 2022 | | Linux | polkit rocky 8 | 0:0.115-13.el8_5.1 | [RLSA-2022:0267](https://patchblox.com/security/data/fix/linux/rlsa-2022-0267.md) | Jan 25, 2022 | | Linux | polkit-debuginfo amzn 2023 | 0.117-10.amzn2023.0.3 | [ALAS2023-2023-026](https://patchblox.com/security/data/fix/linux/alas2023-2023-026.md) | Feb 17, 2023 | | Linux | polkit-debugsource amzn 2023 | 0.117-10.amzn2023.0.3 | [ALAS2023-2023-026](https://patchblox.com/security/data/fix/linux/alas2023-2023-026.md) | Feb 17, 2023 | | Linux | polkit-devel RHEL 8 | 0:0.115-13.el8_5.1 | [RHSA-2022:0267](https://patchblox.com/security/data/fix/linux/rhsa-2022-0267.md) | Jan 25, 2022 | | Linux | polkit-devel almalinux 8 | 0.115-13.el8_5.2 | [ALSA-2022:0267](https://patchblox.com/security/data/fix/linux/alsa-2022-0267.md) | Jan 25, 2022 | | Linux | polkit-devel amzn 2023 | 0.117-10.amzn2023.0.3 | [ALAS2023-2023-026](https://patchblox.com/security/data/fix/linux/alas2023-2023-026.md) | Feb 17, 2023 | | Linux | polkit-devel ol 8 | 0:0.115-13.0.1.el8_5.1 | [ELSA-2022-0267](https://patchblox.com/security/data/fix/linux/elsa-2022-0267.md) | Jan 25, 2022 | | Linux | polkit-docs RHEL 8 | 0:0.115-13.el8_5.1 | [RHSA-2022:0267](https://patchblox.com/security/data/fix/linux/rhsa-2022-0267.md) | Jan 25, 2022 | | Linux | polkit-docs almalinux 8 | 0.115-13.el8_5.2 | [ALSA-2022:0267](https://patchblox.com/security/data/fix/linux/alsa-2022-0267.md) | Jan 25, 2022 | | Linux | polkit-docs amzn 2023 | 0.117-10.amzn2023.0.3 | [ALAS2023-2023-026](https://patchblox.com/security/data/fix/linux/alas2023-2023-026.md) | Feb 17, 2023 | | Linux | polkit-docs ol 8 | 0:0.115-13.0.1.el8_5.1 | [ELSA-2022-0267](https://patchblox.com/security/data/fix/linux/elsa-2022-0267.md) | Jan 25, 2022 | | Linux | polkit-libs RHEL 8 | 0:0.115-13.el8_5.1 | [RHSA-2022:0267](https://patchblox.com/security/data/fix/linux/rhsa-2022-0267.md) | Jan 25, 2022 | | Linux | polkit-libs almalinux 8 | 0.115-13.el8_5.2 | [ALSA-2022:0267](https://patchblox.com/security/data/fix/linux/alsa-2022-0267.md) | Jan 25, 2022 | | Linux | polkit-libs amzn 2023 | 0.117-10.amzn2023.0.3 | [ALAS2023-2023-026](https://patchblox.com/security/data/fix/linux/alas2023-2023-026.md) | Feb 17, 2023 | | Linux | polkit-libs ol 8 | 0:0.115-13.0.1.el8_5.1 | [ELSA-2022-0267](https://patchblox.com/security/data/fix/linux/elsa-2022-0267.md) | Jan 25, 2022 | | Linux | polkit-libs-debuginfo amzn 2023 | 0.117-10.amzn2023.0.3 | [ALAS2023-2023-026](https://patchblox.com/security/data/fix/linux/alas2023-2023-026.md) | Feb 17, 2023 | --- Data as of 2026-11-08T06:59:42Z UTC. 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