Use After Free Affecting freebsd package, versions [,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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Test your applications- Snyk IDSNYK-UNMANAGED-FREEBSD-19427776
- published29 Aug 2026
- disclosed19 Aug 2026
- creditUnknown
Introduced: 19 Aug 2026
CVE-2026-58083 (opens in a new tab)How to fix?
Upgrade freebsd to version 15.1.0-p2 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free in the kqueue copy-on-fork process. An attacker can execute arbitrary code or escalate privileges by exploiting a race condition where a timer-based filter fires during the copying of knotes, leading to corruption of the active list and use of freed memory.