Use After Free Affecting samtools/samtools package, versions [,1.21.1)[1.22.0,1.22.1)
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-SAMTOOLSSAMTOOLS-15845281
- published30 Mar 2026
- disclosed18 Mar 2026
- creditUnknown
Introduced: 18 Mar 2026
CVE-2026-31972 (opens in a new tab)How to fix?
Upgrade samtools/samtools to version 1.21.1, 1.22.1 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free due to premature deallocation of reference data in the mpileup command. An attacker can cause a program crash or potentially leak information about program state by triggering conditions where the process attempts to read from freed memory.