CVE-2026-4897

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Esta entrada sin l\u00edmites puede llevar a una condici\u00f3n de falta de memoria (OOM), lo que resulta en una denegaci\u00f3n de servicio (DoS) para el sistema."}], "id": "CVE-2026-4897", "lastModified": "2026-11-10T22:18:33.690", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "secalert@redhat.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-4897", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-28T02:23:56.266925Z", "version": "2.0.3"}}]}, "published": "2026-03-26T15:16:43.017", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:59997"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:66287"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:97463"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2026-4897"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451739"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

{"bugzilla": {"description": "polkit: Polkit: Denial of Service via unbounded input processing through standard input", "id": "2451739", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451739"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-770", "details": ["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."], "name": "CVE-2026-4897", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "polkit", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Fix deferred", "package_name": "polkit", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "polkit", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "polkit", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "polkit", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-03-26T12:34:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-4897\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-4897"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Red Hat Enterprise Linux 10", "source": "cna", "vendor": "Red Hat"}, "product": "enterprise_linux", "vendor": "redhat"}, {"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 97.0, "source": "matching"}]}, "original": {"product": "Red Hat OpenShift Container Platform 4", "source": "cna", "vendor": "Red Hat"}, "product": "openshift", "vendor": "redhat"}, {"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "product": "openshift_container_platform", "vendor": "redhat"}], "analysis": {"en": {"generated_at": "2026-03-26T17:05:52.801283+00:00", "value": {"mitigation_remediation": ["Apply the latest Red\u00a0Hat security updates that include the polkit patch from the official repositories.", "Verify the patch has been installed by checking the polkit package version with rpm -qi polkit.", "Monitor system memory usage and service availability for signs of denial\u2011of\u2011service attempts after updates."], "summary": {"action": "Immediate Patch", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "Red\u00a0Hat Enterprise Linux releases 6, 7, 8, 9, and 10, as well as Red\u00a0Hat OpenShift Container Platform\u00a04 are impacted. Installation of the affected packages on these platforms exposes the system to local memory\u2011exhaustion attacks that can bring services to a halt.", "description_and_impact": "The vulnerability resides in polkit\u2019s polkit-agent-helper-1 setuid binary, which reads data from standard input without limiting the input size. A local user can supply a specially crafted, excessively long stream that forces an out\u2011of\u2011memory condition, causing the helper process to crash and leading to a denial\u2011of\u2011service for the system. The flaw corresponds to resource\u2011consumption overuse (CWE\u2011770).", "risk_and_exploitability": "The CVSS score of 5.5 classifies the issue as moderate severity. No EPSS data or KEV listing is available, indicating that exploitation has not been widely observed yet. The attack vector is local, requiring a user that can execute commands with the privileges of the setuid binary, and the exploit would only cause service disruption without compromising overall system confidentiality or integrity."}}}}, "created": "2026-03-27T08:34:03.194852+00:00", "updated": "2026-03-27T09:26:29.883091+00:00", "vendors": ["redhat", "redhat$PRODUCT$enterprise_linux", "redhat$PRODUCT$openshift", "redhat$PRODUCT$openshift_container_platform"]}