CVE-2026-58100

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.

Score
CVSS 3.1 7.0 High
Status
Analyzed - secteam@freebsd.org
Published
2026-10-15
Last modified
2026-10-19
Weaknesses
CWE-125, CWE-362

Affected products

References

 
 
© AVABIS GmbH privacypolicy about