CVE-2026-58100 (GCVE-0-2026-58100)

Vulnerability from cvelistv5 – Published: 2026-10-15 06:31 – Updated: 2026-10-16 14:18
VLAI
Title
Memory safety bugs in kqueue copy-on-fork implementation
Summary
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.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 03:56 UTC
CWE
  • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
  • CWE-125 - Out-of-bounds Read
Assigner
freebsd CNA under the mitre root
CNA scorecard D 60/100 over 69 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
FreeBSD FreeBSD Affected: 15.1-RELEASE , < p4 (release)
guessed Create a notification for this product.
Date Public
2026-09-29 20:30
Credits
Reo Shiseki Mark Johnston
Show details on NVD website
To clipboard 

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