{"id":"CVE-2026-4897","aliases":["ALSA-2026:59997","AZL-81558","BELL-CVE-2026-4897","CLSA-2026-1779368297","DEBIAN-CVE-2026-4897","EUVD-2026-16214","GHSA-v4jf-wwp4-588q","MGASA-2026-0085","OESA-2026-1814","RHSA-2026:59997","RHSA-2026:66287","RLSA-2026:59997","SUSE-SU-2026:1424-1","SUSE-SU-2026:1425-1","SUSE-SU-2026:1655-1","SUSE-SU-2026:20969-1","SUSE-SU-2026:21032-1","SUSE-SU-2026:22054-1","SUSE-SU-2026:22090-1","UBUNTU-CVE-2026-4897","USN-8173-1","openSUSE-SU-2026:10453-1","openSUSE-SU-2026:20925-1"],"status":"published","title":"Polkit: polkit: denial of service via unbounded input processing through standard input","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). 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polkit: denial of service via unbounded input processing through standard input","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.","status":"published","published":"2026-03-26T14:56:05.943Z","modified":"2026-11-05T21:17:33.583Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-770"],"updated_at":"2026-11-05T22:55:20.139479Z"}],"euvd":[{"id":"EUVD-2026-16214","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.","status":"published","published":"2026-03-26T14:56:05Z","modified":"2026-11-05T21:17:33Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-05T22:02:08.543452Z"}],"ghsa":[{"id":"GHSA-v4jf-wwp4-588q","title":"A flaw was found in polkit. A local user can exploit this by providing a specially crafted,...","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.","status":"published","published":"2026-03-26T15:30:41Z","modified":"2026-09-10T18:33:01Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T15:11:42.667371Z"}],"nvd":[{"id":"CVE-2026-4897","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.","status":"published","published":"2026-03-26T15:16:43.017Z","modified":"2026-11-05T22:18:45.343Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-770"],"updated_at":"2026-11-05T23:57:16.793383Z"}],"osv":[{"id":"BELL-CVE-2026-4897","status":"published","published":"2026-03-27T06:08:21.426653Z","modified":"2026-10-31T07:15:05.254476216Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:28:24.391068Z"},{"id":"DEBIAN-CVE-2026-4897","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.","status":"published","published":"2026-03-26T15:16:43.017Z","modified":"2026-11-06T10:06:23.572966187Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-06T10:38:22.758306Z"},{"id":"OESA-2026-1814","title":"polkit security update","description":"polkit is a toolkit for defining and handling authorizations. It is used for allowing unprivileged processes to speak to privileged processes.\r\n\r\nSecurity Fix(es):\n\nA 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.(CVE-2026-4897)","status":"published","published":"2026-04-03T11:10:50Z","modified":"2026-08-18T01:19:45.822869891Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:52:45.721983Z"},{"id":"RHSA-2026:59997","title":"Red Hat Security Advisory: polkit security update","status":"published","published":"2026-08-27T10:16:01Z","modified":"2026-09-11T10:13:13Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:21.91255Z"},{"id":"RHSA-2026:66287","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update","status":"published","published":"2026-09-11T10:15:00Z","modified":"2026-10-06T10:31:30.472271346Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:22.406388Z"},{"id":"RLSA-2026:59997","title":"Moderate: polkit security update","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.\n\nSecurity Fix(es):\n\n* polkit: Polkit: Denial of Service via unbounded input processing through standard input (CVE-2026-4897)\n\nFor 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.","status":"published","published":"2026-08-26T18:06:44.856853Z","modified":"2026-08-26T18:25:49.857914491Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:26.111232Z"},{"id":"UBUNTU-CVE-2026-4897","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.","status":"published","published":"2026-03-26T15:16:00Z","modified":"2026-04-22T16:34:47.702456Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:56:33.391918Z"},{"id":"ALSA-2026:59997","title":"Moderate: polkit security update","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.  \n\nSecurity Fix(es):  \n\n  * polkit: Polkit: Denial of Service via unbounded input processing through standard input (CVE-2026-4897)\n\n\nFor 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.\n","status":"published","published":"2026-08-26T00:00:00Z","modified":"2026-10-29T11:30:46.845528742Z","updated_at":"2026-11-02T15:27:54.753319Z"},{"id":"AZL-81558","title":"CVE-2026-4897 affecting package polkit for versions less than 123-4","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.","status":"published","published":"2026-03-26T15:16:43Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:24.988217Z"},{"id":"CLSA-2026-1779368297","title":"polkit: Fix of CVE-2026-4897","description":"- CVE-2026-4897: Fix unbounded stdin reads that allow local user to trigger OOM\n  and DoS in setuid helper; add input length checks and limit allocations.","status":"published","published":"2026-05-21T12:58:22Z","modified":"2026-06-01T00:32:53.858700018Z","updated_at":"2026-11-02T15:43:45.090939Z"},{"id":"MGASA-2026-0085","title":"Updated polkit-122 packages fix security vulnerability","description":"Denial of service via unbounded input processing through standard input.\n(CVE-2026-4897)\n","status":"published","published":"2026-04-06T17:35:50Z","modified":"2026-04-16T04:42:47.972086445Z","updated_at":"2026-11-02T15:49:43.178336Z"},{"id":"openSUSE-SU-2026:10453-1","title":"libpolkit-agent-1-0-127-3.1 on GA media","description":"These are all security issues fixed in the libpolkit-agent-1-0-127-3.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-03-28T00:00:00Z","modified":"2026-03-29T10:45:28.039874Z","updated_at":"2026-11-02T16:58:38.415593Z"},{"id":"openSUSE-SU-2026:20925-1","title":"Security update for polkit","description":"This update for polkit fixes the following issue:\n\n- CVE-2026-4897: Fixed possible OOM condition via specially crafted input to `polkit-agent-helper-1` (bsc#1260859).\n","status":"published","published":"2026-06-08T16:27:02Z","modified":"2026-06-10T18:24:15.185715185Z","updated_at":"2026-11-02T16:58:41.885092Z"},{"id":"SUSE-SU-2026:1424-1","title":"Security update for polkit","description":"This update for polkit fixes the following issue:\n\n- CVE-2026-4897: Fixed possible OOM condition via specially crafted input to `polkit-agent-helper-1` (bsc#1260859).\n","status":"published","published":"2026-04-17T08:03:02Z","modified":"2026-04-18T08:00:56.351878Z","updated_at":"2026-11-02T15:54:01.262144Z"},{"id":"SUSE-SU-2026:1425-1","title":"Security update for polkit","description":"This update for polkit fixes the following issue:\n\n- CVE-2026-4897: Fixed possible OOM condition via specially crafted input to `polkit-agent-helper-1` (bsc#1260859).\n","status":"published","published":"2026-04-17T08:03:19Z","modified":"2026-04-18T08:01:10.222986Z","updated_at":"2026-11-02T15:54:01.262144Z"},{"id":"SUSE-SU-2026:1655-1","title":"Security update for polkit","description":"This update for polkit fixes the following issue:\n\n- CVE-2026-4897: Fixed possible OOM condition via specially crafted input to `polkit-agent-helper-1` (bsc#1260859).\n","status":"published","published":"2026-04-29T08:43:12Z","modified":"2026-04-30T08:16:01.451331Z","updated_at":"2026-11-02T15:54:01.610851Z"},{"id":"SUSE-SU-2026:20969-1","title":"Security update for polkit","description":"This update for polkit fixes the following issue:\n\n- CVE-2026-4897: Fixed possible OOM condition via specially crafted input to `polkit-agent-helper-1` (bsc#1260859).\n","status":"published","published":"2026-04-07T11:50:03Z","modified":"2026-04-09T18:24:40.158432Z","updated_at":"2026-11-02T15:54:01.953589Z"},{"id":"SUSE-SU-2026:21032-1","title":"Security update for polkit","description":"This update for polkit fixes the following issue:\n\n- CVE-2026-4897: Fixed possible OOM condition via specially crafted input to `polkit-agent-helper-1` (bsc#1260859).\n","status":"published","published":"2026-04-07T11:36:08Z","modified":"2026-04-14T18:27:30.425512Z","updated_at":"2026-11-02T15:54:02.312556Z"},{"id":"SUSE-SU-2026:22054-1","title":"Security update for polkit","description":"This update for polkit fixes the following issue:\n\n- CVE-2026-4897: Fixed possible OOM condition via specially crafted input to `polkit-agent-helper-1` (bsc#1260859).\n","status":"published","published":"2026-06-08T16:26:28Z","modified":"2026-06-10T18:24:10.939906767Z","updated_at":"2026-11-02T15:54:02.654057Z"},{"id":"SUSE-SU-2026:22090-1","title":"Security update for polkit","description":"This update for polkit fixes the following issue:\n\n- CVE-2026-4897: Fixed possible OOM condition via specially crafted input to `polkit-agent-helper-1` (bsc#1260859).\n","status":"published","published":"2026-06-08T16:26:28Z","modified":"2026-06-16T18:24:43.590067963Z","updated_at":"2026-11-02T15:54:02.654057Z"},{"id":"USN-8173-1","title":"policykit-1 vulnerabilities","description":"It was discovered that polkit incorrectly handled nested elements in XML\npolicy files. If an administrator were tricked into installing a malicious\npolicy file, a remote attacker could possibly use this issue to cause\npolkit to crash, resulting in a denial of service. (CVE-2025-7519)\n\nPavel Kohout discovered that the polkit polkit-agent-helper-1 utility\nincorrectly handled long input. A local attacker could possibly use this\nissue to cause polkit to crash, resulting in a denial of service.\n(CVE-2026-4897)","status":"published","published":"2026-04-14T08:02:28Z","modified":"2026-04-27T18:48:00.224765Z","updated_at":"2026-11-02T16:58:22.951676Z"}]}}