CVE-2026-58100 — Memory safety bugs in kqueue copy-on-fork implementation
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 befor…
Published: 2026-10-15 · CVSS: 7.0 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7