CVE-2026-49415

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"75973F7C-645A-438C-A03B-C77AAAD20C15", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "During execve(2) of a SUID binary, the new virtual address space is installed before the process credentials are updated. During this window, a process running as the same user can access the target process's memory via procfs or linprocfs, because the kernel's debugging permission check still saw the original credentials.\n\nAn unprivileged local user can exploit this race to modify the address space of a SUID binary before its credentials are elevated, potentially gaining full control of the affected system."}, {"lang": "es", "value": "Durante execve(2) de un binario SUID, el nuevo espacio de direcciones virtual se instala antes de que se actualicen las credenciales del proceso. Durante esta ventana, un proceso ejecut\u00e1ndose como el mismo usuario puede acceder a la memoria del proceso objetivo a trav\u00e9s de procfs o linprocfs, porque la verificaci\u00f3n de permisos de depuraci\u00f3n del kernel a\u00fan ve\u00eda las credenciales originales.\n\nUn usuario local sin privilegios puede explotar esta condici\u00f3n de carrera para modificar el espacio de direcciones de un binario SUID antes de que sus credenciales sean elevadas, obteniendo potencialmente el control total del sistema afectado."}], "id": "CVE-2026-49415", "lastModified": "2026-11-05T21:10:00.183", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-49415", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-20T03:56:02.886001Z", "version": "2.0.3"}}]}, "published": "2026-08-19T05:17:03.830", "references": [{"source": "secteam@freebsd.org", "tags": ["Vendor Advisory"], "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:39.execve.asc"}], "sourceIdentifier": "secteam@freebsd.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-367"}], "source": "secteam@freebsd.org", "type": "Secondary"}]}

{}

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