CVSS 7.0 (high) · published 2026-10-15
kqueue_fork_copy_knote() indexed into the child's file descriptor table using a knote's file descriptor number without a bounds check. Because the child's table is copied before knotes are transferred, a concurrent thread in the parent could grow the parent's table and register knotes with file descriptor numbers beyond the end of the child's table, causing an out-of-bounds read. An unprivileged local user may be able to exploit these races to escalate privileges.
Affected products (NVD): freebsd freebsd
Weakness: CWE-125, CWE-362
Source: NVD CVE-2026-58100
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