# CVE-2026-4897: polkit: A flaw was found in polkit CVE-2026-4897 is fixed in 14 products on 1 platform, first by gir1.2-polkit-1.0 0.105-33ubuntu0.1, released March 26, 2026. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2026-4897 - Priority: Routine - CVSS: 5.5 (moderate) - EPSS: 0.0016 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Mar 26, 2026 ## Description A flaw was found in polkit. A local user can exploit this by providing a specially crafted, excessively long input to the `polkit-agent-helper-1` setuid binary via standard input (stdin). This unbounded input can lead to an out-of-memory (OOM) condition, resulting in a Denial of Service (DoS) for the system. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | gir1.2-polkit-1.0 Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.1 | [gir1.2-polkit-1.0 0.105-33ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gir1.2-polkit-1.0-0.105-33ubuntu0.1.md) | Mar 26, 2026 | | Linux | gir1.2-polkit-1.0 Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.3 | [gir1.2-polkit-1.0 124-2ubuntu1.24.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gir1.2-polkit-1.0-124-2ubuntu1.24.04.3.md) | Mar 26, 2026 | | Linux | gir1.2-polkit-1.0 Ubuntu 25.10 (questing) | 126-2ubuntu0.1 | [gir1.2-polkit-1.0 126-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-gir1.2-polkit-1.0-126-2ubuntu0.1.md) | Mar 26, 2026 | | Linux | libpolkit-agent-1-0 Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.1 | [libpolkit-agent-1-0 0.105-33ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libpolkit-agent-1-0-0.105-33ubuntu0.1.md) | Mar 26, 2026 | | Linux | libpolkit-agent-1-0 Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.3 | [libpolkit-agent-1-0 124-2ubuntu1.24.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libpolkit-agent-1-0-124-2ubuntu1.24.04.3.md) | Mar 26, 2026 | | Linux | libpolkit-agent-1-0 Ubuntu 25.10 (questing) | 126-2ubuntu0.1 | [libpolkit-agent-1-0 126-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libpolkit-agent-1-0-126-2ubuntu0.1.md) | Mar 26, 2026 | | Linux | libpolkit-gobject-1-0 Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.1 | [libpolkit-gobject-1-0 0.105-33ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libpolkit-gobject-1-0-0.105-33ubuntu0.1.md) | Mar 26, 2026 | | Linux | libpolkit-gobject-1-0 Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.3 | [libpolkit-gobject-1-0 124-2ubuntu1.24.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libpolkit-gobject-1-0-124-2ubuntu1.24.04.3.md) | Mar 26, 2026 | | Linux | libpolkit-gobject-1-0 Ubuntu 25.10 (questing) | 126-2ubuntu0.1 | [libpolkit-gobject-1-0 126-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libpolkit-gobject-1-0-126-2ubuntu0.1.md) | Mar 26, 2026 | | Linux | pkexec Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.1 | [pkexec 0.105-33ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-pkexec-0.105-33ubuntu0.1.md) | Mar 26, 2026 | | Linux | pkexec Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.3 | [pkexec 124-2ubuntu1.24.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-pkexec-124-2ubuntu1.24.04.3.md) | Mar 26, 2026 | | Linux | pkexec Ubuntu 25.10 (questing) | 126-2ubuntu0.1 | [pkexec 126-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-pkexec-126-2ubuntu0.1.md) | Mar 26, 2026 | | Linux | policykit-1 Debian 14 | 127-3 | [DEBIAN-CVE-2026-4897](https://patchblox.com/security/data/fix/linux/debian-cve-2026-4897.md) | Mar 26, 2026 | | Linux | policykit-1 Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.1 | [policykit-1 0.105-33ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-policykit-1-0.105-33ubuntu0.1.md) | Mar 26, 2026 | | Linux | policykit-1 Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.3 | [policykit-1 124-2ubuntu1.24.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-policykit-1-124-2ubuntu1.24.04.3.md) | Mar 26, 2026 | | Linux | polkit RHEL 10 | 125-4.el10_2.1 | [RHSA-2026:59997](https://patchblox.com/security/data/fix/linux/rhsa-2026-59997.md) | Mar 26, 2026 | | Linux | polkit almalinux 10 | 125-4.el10_2.1 | [ALSA-2026:59997](https://patchblox.com/security/data/fix/linux/alsa-2026-59997.md) | Aug 26, 2026 | | Linux | polkit amzn 2023 | 125-1.amzn2023.0.3 | [ALAS2023-2026-1546](https://patchblox.com/security/data/fix/linux/alas2023-2026-1546.md) | Apr 13, 2026 | | Linux | polkit ol 10 | 0:125-4.0.1.el10_2.1 | [ELSA-2026-59997](https://patchblox.com/security/data/fix/linux/elsa-2026-59997.md) | Aug 26, 2026 | | Linux | polkit opensuse-leap 15.6 | 121-150500.3.11.1 | [SUSE-SU-2026:1424-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-1424-1.md) | Apr 17, 2026 | | Linux | polkit opensuse-leap 16.0 | 123-160000.3.1 | [OPENSUSE-SU-2026:20925-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20925-1.md) | Jun 8, 2026 | | Linux | polkit rocky 10 | 0:125-4.el10_2.1 | [RLSA-2026:59997](https://patchblox.com/security/data/fix/linux/rlsa-2026-59997.md) | Aug 26, 2026 | | Linux | polkit sles 15.7 | 121-150500.3.11.1 | [SUSE-SU-2026:1424-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-1424-1.md) | Apr 17, 2026 | | Linux | polkit sles 16.0 | 123-160000.3.1 | [SUSE-SU-2026:22090-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22090-1.md) | Jun 8, 2026 | | Linux | polkit-debuginfo amzn 2023 | 125-1.amzn2023.0.3 | [ALAS2023-2026-1546](https://patchblox.com/security/data/fix/linux/alas2023-2026-1546.md) | Apr 13, 2026 | | Linux | polkit-debugsource amzn 2023 | 125-1.amzn2023.0.3 | [ALAS2023-2026-1546](https://patchblox.com/security/data/fix/linux/alas2023-2026-1546.md) | Apr 13, 2026 | | Linux | polkit-devel almalinux 10 | 125-4.el10_2.1 | [ALSA-2026:59997](https://patchblox.com/security/data/fix/linux/alsa-2026-59997.md) | Aug 26, 2026 | | Linux | polkit-devel amzn 2023 | 125-1.amzn2023.0.3 | [ALAS2023-2026-1546](https://patchblox.com/security/data/fix/linux/alas2023-2026-1546.md) | Apr 13, 2026 | | Linux | polkit-devel ol 10 | 0:125-4.0.1.el10_2.1 | [ELSA-2026-59997](https://patchblox.com/security/data/fix/linux/elsa-2026-59997.md) | Aug 26, 2026 | | Linux | polkit-docs almalinux 10 | 125-4.el10_2.1 | [ALSA-2026:59997](https://patchblox.com/security/data/fix/linux/alsa-2026-59997.md) | Aug 26, 2026 | | Linux | polkit-docs amzn 2023 | 125-1.amzn2023.0.3 | [ALAS2023-2026-1546](https://patchblox.com/security/data/fix/linux/alas2023-2026-1546.md) | Apr 13, 2026 | | Linux | polkit-docs ol 10 | 0:125-4.0.1.el10_2.1 | [ELSA-2026-59997](https://patchblox.com/security/data/fix/linux/elsa-2026-59997.md) | Aug 26, 2026 | | Linux | polkit-libs almalinux 10 | 125-4.el10_2.1 | [ALSA-2026:59997](https://patchblox.com/security/data/fix/linux/alsa-2026-59997.md) | Aug 26, 2026 | | Linux | polkit-libs amzn 2023 | 125-1.amzn2023.0.3 | [ALAS2023-2026-1546](https://patchblox.com/security/data/fix/linux/alas2023-2026-1546.md) | Apr 13, 2026 | | Linux | polkit-libs ol 10 | 0:125-4.0.1.el10_2.1 | [ELSA-2026-59997](https://patchblox.com/security/data/fix/linux/elsa-2026-59997.md) | Aug 26, 2026 | | Linux | polkit-libs-debuginfo amzn 2023 | 125-1.amzn2023.0.3 | [ALAS2023-2026-1546](https://patchblox.com/security/data/fix/linux/alas2023-2026-1546.md) | Apr 13, 2026 | | Linux | polkitd Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.1 | [polkitd 0.105-33ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-polkitd-0.105-33ubuntu0.1.md) | Mar 26, 2026 | | Linux | polkitd Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.3 | [polkitd 124-2ubuntu1.24.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-polkitd-124-2ubuntu1.24.04.3.md) | Mar 26, 2026 | | Linux | polkitd Ubuntu 25.10 (questing) | 126-2ubuntu0.1 | [polkitd 126-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-polkitd-126-2ubuntu0.1.md) | Mar 26, 2026 | | Linux | polkitd-pkla Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.3 | [polkitd-pkla 124-2ubuntu1.24.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-noble-polkitd-pkla-124-2ubuntu1.24.04.3.md) | Mar 26, 2026 | --- Data as of 2026-11-08T00:53:09Z UTC. 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