Polkit: polkit: denial of service via unbounded input processing through standard input
Historical advisory recorded 5 Nov 2026 22:36:54 UTC. Read the latest advisory.
cve-program · CVE-2026-4897
PublishedA 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.
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cve-program · CVE-2026-4897
PublishedPolkit: polkit: denial of service via unbounded input processing through standard input
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.
- Source published
- 26 Mar 2026 14:56:05 UTC
- Source modified
- 5 Nov 2026 21:17:33 UTC
- Saved here
- 5 Nov 2026 22:36:54 UTC
- Source terms
- CVE Program Terms of Use
Original source record · Cite this exact observation · Complete original publisher JSON
Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
CVSS 3.1 · 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H