Use After Free Affecting libfuse package, versions [3.18.1,]
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.
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Test your applications- Snyk IDSNYK-CONAN-LIBFUSE-15798534
- published28 Mar 2026
- disclosed20 Mar 2026
- creditagabhin
Introduced: 20 Mar 2026
NewCVE-2026-33150 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Use After Free in the fuse_uring_start process when io_uring thread creation fails due to resource exhaustion, such as cgroup pids.max limits. An attacker can cause process crashes and potentially execute arbitrary code by triggering resource exhaustion that leads to a dangling pointer being used during session shutdown. This is only exploitable if thread creation is constrained by cgroup pids.max or similar resource limits in the environment.