CVE-2026-49416

{"id": "CVE-2026-49416", "cveTags": [], "metrics": {}, "affected": [{"source": "secteam@freebsd.org", "affectedData": [{"vendor": "FreeBSD", "modules": ["vt"], "product": "FreeBSD", "versions": [{"status": "affected", "version": "15.0-RELEASE", "lessThan": "p10", "versionType": "release"}, {"status": "affected", "version": "14.4-RELEASE", "lessThan": "p6", "versionType": "release"}, {"status": "affected", "version": "14.3-RELEASE", "lessThan": "p15", "versionType": "release"}], "defaultStatus": "unknown"}]}], "published": "2026-06-27T10:16:38.077", "references": [{"url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:34.vt.asc", "source": "secteam@freebsd.org"}], "vulnStatus": "Received", "weaknesses": [{"type": "Secondary", "source": "secteam@freebsd.org", "description": [{"lang": "en", "value": "CWE-190"}]}], "descriptions": [{"lang": "en", "value": "The CONS_HISTORY ioctl handler did not adequately validate the requested history size. A large value caused an integer overflow in the buffer size calculation, resulting in a heap allocation smaller than expected. Subsequent initialization of the buffer wrote beyond the end of the allocation.\n\nAn unprivileged local user with access to a vt(4) device can trigger an out-of-bounds write in the kernel, potentially escalating privileges."}], "lastModified": "2026-06-27T10:16:38.077", "sourceIdentifier": "secteam@freebsd.org"}