gir1.2-polkit-1.0: A flaw was found in polkit
CVE-2026-85498 is fixed in 7 products on 1 platform, first by gir1.2-polkit-1.0 127-2ubuntu1.1, released September 6, 2026. It is not reported as exploited. Patch Radar priority: Routine.
A flaw was found in polkit. When processing input that begins with a null byte, an arithmetic error in the authentication agent helper causes an integer underflow during buffer length calculation, resulting in an out-of-bounds memory read. An attacker capable of supplying crafted input can trigger this flaw, potentially causing an application crash and resulting in a Denial of Service (DoS).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| gir1.2-polkit-1.0 · Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.2 | gir1.2-polkit-1.0 0.105-33ubuntu0.2 | Sep 17, 2026 |
| gir1.2-polkit-1.0 · Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.4 | gir1.2-polkit-1.0 124-2ubuntu1.24.04.4 | Sep 17, 2026 |
| gir1.2-polkit-1.0 · Ubuntu 26.04.1 LTS (resolute) | 127-2ubuntu1.1 | gir1.2-polkit-1.0 127-2ubuntu1.1 | Sep 6, 2026 |
| libpolkit-agent-1-0 · Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.2 | libpolkit-agent-1-0 0.105-33ubuntu0.2 | Sep 17, 2026 |
| libpolkit-agent-1-0 · Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.4 | libpolkit-agent-1-0 124-2ubuntu1.24.04.4 | Sep 17, 2026 |
| libpolkit-agent-1-0 · Ubuntu 26.04.1 LTS (resolute) | 127-2ubuntu1.1 | libpolkit-agent-1-0 127-2ubuntu1.1 | Sep 6, 2026 |
| libpolkit-gobject-1-0 · Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.2 | libpolkit-gobject-1-0 0.105-33ubuntu0.2 | Sep 17, 2026 |
| libpolkit-gobject-1-0 · Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.4 | libpolkit-gobject-1-0 124-2ubuntu1.24.04.4 | Sep 17, 2026 |
| libpolkit-gobject-1-0 · Ubuntu 26.04.1 LTS (resolute) | 127-2ubuntu1.1 | libpolkit-gobject-1-0 127-2ubuntu1.1 | Sep 6, 2026 |
| pkexec · Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.2 | pkexec 0.105-33ubuntu0.2 | Sep 17, 2026 |
| pkexec · Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.4 | pkexec 124-2ubuntu1.24.04.4 | Sep 17, 2026 |
| pkexec · Ubuntu 26.04.1 LTS (resolute) | 127-2ubuntu1.1 | pkexec 127-2ubuntu1.1 | Sep 6, 2026 |
| policykit-1 · Debian 14 | 128-1 | DEBIAN-CVE-2026-85498 | Nov 8, 2026 |
| policykit-1 · Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.2 | policykit-1 0.105-33ubuntu0.2 | Sep 17, 2026 |
| policykit-1 · Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.4 | policykit-1 124-2ubuntu1.24.04.4 | Sep 17, 2026 |
| polkitd · Ubuntu 22.04.1 LTS (jammy) | 0.105-33ubuntu0.2 | polkitd 0.105-33ubuntu0.2 | Sep 17, 2026 |
| polkitd · Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.4 | polkitd 124-2ubuntu1.24.04.4 | Sep 17, 2026 |
| polkitd · Ubuntu 26.04.1 LTS (resolute) | 127-2ubuntu1.1 | polkitd 127-2ubuntu1.1 | Sep 6, 2026 |
| polkitd-pkla · Ubuntu 24.04.5 LTS (noble) | 124-2ubuntu1.24.04.4 | polkitd-pkla 124-2ubuntu1.24.04.4 | Sep 17, 2026 |
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