Integer Underflow (Wrap or Wraparound) Affecting freebsd package, versions [,14.4.0-p8)[15.0.0,15.0.0-p12)[15.1.0,15.1.0-p2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published29 Aug 2026
- disclosed19 Aug 2026
- creditUnknown
Introduced: 19 Aug 2026
CVE-2026-58087 (opens in a new tab)How to fix?
Upgrade freebsd to version 14.4.0-p8, 15.0.0-p12, 15.1.0-p2 or higher.
Overview
Affected versions of this package are vulnerable to Integer Underflow (Wrap or Wraparound) in the semctl process when handling the GETALL and SETALL commands. An attacker can access or modify kernel heap memory by rapidly destroying and recreating semaphore sets at the same index, causing the sequence number to wrap and bypass validation, which may lead to privilege escalation.