CVE-2026-58093 (GCVE-0-2026-58093)
Vulnerability from cvelistv5
Published
2026-08-26 05:33
Modified
2026-08-27 03:56
CWE
  • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
  • CWE-416 - Use After Free
Summary
The TIOCSCTTY ioctl handler drops the tty lock in order to acquire the process tree lock. After reacquiring the tty lock, the handler did not revalidate the state of the terminal, and could proceed to link a terminal that was concurrently being destroyed to the calling process' session. An unprivileged local user can exploit this race condition to escalate privileges.
Impacted products
Vendor Product Version
FreeBSD FreeBSD Version: 15.1-RELEASE
Version: 15.0-RELEASE
Version: 14.4-RELEASE
Create a notification for this product.
Show details on NVD website


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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