CVE-2026-34001

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"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:23254", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:23255", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:23496", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:24341", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-34001", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451109", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34001.json", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-825"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-825"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence() function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially enabling memory corruption. This could result in a denial of service or further compromise of the system."}, {"lang": "es", "value": "Se encontr\u00f3 una falla en el servidor X.Org X. Esta vulnerabilidad de uso despu\u00e9s de liberaci\u00f3n ocurre en la l\u00f3gica de activaci\u00f3n de vallas XSYNC, espec\u00edficamente dentro de la funci\u00f3n miSyncTriggerFence(). Un atacante con acceso al servidor X11 puede explotar esto sin interacci\u00f3n del usuario, lo que lleva a un fallo del servidor y potencialmente habilitando la corrupci\u00f3n de memoria. Esto podr\u00eda resultar en una denegaci\u00f3n de servicio o un compromiso adicional del sistema."}], "lastModified": "2026-10-26T21:10:00.170", "sourceIdentifier": "secalert@redhat.com"}