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CVE-2026-49428

FreeBSD

Beschreibung

Certain system calls, such open(2) with the O_TRUNC flag set, and fspacectl(2), could incorrectly free memory in largepage objects. These operations are not permitted on largepage objects, but the implementation did not verify this. An unprivileged local user can abuse the bug to access freed kernel memory. This can be exploited to escalate privileges.

CVSS 8.4EPSS 0.29%Risiko 0.86
Quelle öffnen
Veröffentlicht
2026-08-19 06:17:42
Betroffene Versionen
unknown
Typ
Kernel
Zuletzt geändert
2026-08-26 16:54:50
Vektor
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H