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.
Routine
CVSS
5.5
moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0016
4th percentile
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
| 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 | Mar 26, 2026 |
| 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 | Mar 26, 2026 |
| gir1.2-polkit-1.0 · Ubuntu 25.10 (questing) | 126-2ubuntu0.1 | gir1.2-polkit-1.0 126-2ubuntu0.1 | Mar 26, 2026 |
| libpolkit-agent-1-0 · Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.1 | libpolkit-agent-1-0 0.105-33ubuntu0.1 | Mar 26, 2026 |
| libpolkit-agent-1-0 · Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.3 | libpolkit-agent-1-0 124-2ubuntu1.24.04.3 | Mar 26, 2026 |
| libpolkit-agent-1-0 · Ubuntu 25.10 (questing) | 126-2ubuntu0.1 | libpolkit-agent-1-0 126-2ubuntu0.1 | Mar 26, 2026 |
| libpolkit-gobject-1-0 · Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.1 | libpolkit-gobject-1-0 0.105-33ubuntu0.1 | Mar 26, 2026 |
| libpolkit-gobject-1-0 · Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.3 | libpolkit-gobject-1-0 124-2ubuntu1.24.04.3 | Mar 26, 2026 |
| libpolkit-gobject-1-0 · Ubuntu 25.10 (questing) | 126-2ubuntu0.1 | libpolkit-gobject-1-0 126-2ubuntu0.1 | Mar 26, 2026 |
| pkexec · Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.1 | pkexec 0.105-33ubuntu0.1 | Mar 26, 2026 |
| pkexec · Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.3 | pkexec 124-2ubuntu1.24.04.3 | Mar 26, 2026 |
| pkexec · Ubuntu 25.10 (questing) | 126-2ubuntu0.1 | pkexec 126-2ubuntu0.1 | Mar 26, 2026 |
| policykit-1 · Debian 14 | 127-3 | DEBIAN-CVE-2026-4897 | Mar 26, 2026 |
| policykit-1 · Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.1 | policykit-1 0.105-33ubuntu0.1 | Mar 26, 2026 |
| policykit-1 · Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.3 | policykit-1 124-2ubuntu1.24.04.3 | Mar 26, 2026 |
| polkit · RHEL 10 | 125-4.el10_2.1 | RHSA-2026:59997 | Mar 26, 2026 |
| polkit · almalinux 10 | 125-4.el10_2.1 | ALSA-2026:59997 | Aug 26, 2026 |
| polkit · amzn 2023 | 125-1.amzn2023.0.3 | ALAS2023-2026-1546 | Apr 13, 2026 |
| polkit · ol 10 | 0:125-4.0.1.el10_2.1 | ELSA-2026-59997 | Aug 26, 2026 |
| polkit · opensuse-leap 15.6 | 121-150500.3.11.1 | SUSE-SU-2026:1424-1 | Apr 17, 2026 |
| polkit · opensuse-leap 16.0 | 123-160000.3.1 | OPENSUSE-SU-2026:20925-1 | Jun 8, 2026 |
| polkit · rocky 10 | 0:125-4.el10_2.1 | RLSA-2026:59997 | Aug 26, 2026 |
| polkit · sles 15.7 | 121-150500.3.11.1 | SUSE-SU-2026:1424-1 | Apr 17, 2026 |
| polkit · sles 16.0 | 123-160000.3.1 | SUSE-SU-2026:22090-1 | Jun 8, 2026 |
| polkit-debuginfo · amzn 2023 | 125-1.amzn2023.0.3 | ALAS2023-2026-1546 | Apr 13, 2026 |
| polkit-debugsource · amzn 2023 | 125-1.amzn2023.0.3 | ALAS2023-2026-1546 | Apr 13, 2026 |
| polkit-devel · almalinux 10 | 125-4.el10_2.1 | ALSA-2026:59997 | Aug 26, 2026 |
| polkit-devel · amzn 2023 | 125-1.amzn2023.0.3 | ALAS2023-2026-1546 | Apr 13, 2026 |
| polkit-devel · ol 10 | 0:125-4.0.1.el10_2.1 | ELSA-2026-59997 | Aug 26, 2026 |
| polkit-docs · almalinux 10 | 125-4.el10_2.1 | ALSA-2026:59997 | Aug 26, 2026 |
| polkit-docs · amzn 2023 | 125-1.amzn2023.0.3 | ALAS2023-2026-1546 | Apr 13, 2026 |
| polkit-docs · ol 10 | 0:125-4.0.1.el10_2.1 | ELSA-2026-59997 | Aug 26, 2026 |
| polkit-libs · almalinux 10 | 125-4.el10_2.1 | ALSA-2026:59997 | Aug 26, 2026 |
| polkit-libs · amzn 2023 | 125-1.amzn2023.0.3 | ALAS2023-2026-1546 | Apr 13, 2026 |
| polkit-libs · ol 10 | 0:125-4.0.1.el10_2.1 | ELSA-2026-59997 | Aug 26, 2026 |
| polkit-libs-debuginfo · amzn 2023 | 125-1.amzn2023.0.3 | ALAS2023-2026-1546 | Apr 13, 2026 |
| polkitd · Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.1 | polkitd 0.105-33ubuntu0.1 | Mar 26, 2026 |
| polkitd · Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.3 | polkitd 124-2ubuntu1.24.04.3 | Mar 26, 2026 |
| polkitd · Ubuntu 25.10 (questing) | 126-2ubuntu0.1 | polkitd 126-2ubuntu0.1 | Mar 26, 2026 |
| polkitd-pkla · Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.3 | polkitd-pkla 124-2ubuntu1.24.04.3 | Mar 26, 2026 |
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