NULL Pointer Dereference Affecting libfuse package, versions [3.18.1,3.18.2)
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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- published28 Mar 2026
- disclosed20 Mar 2026
- creditgabhin
Introduced: 20 Mar 2026
CVE-2026-33179 (opens in a new tab)How to fix?
Upgrade libfuse to version 3.18.2 or higher.
Overview
Affected versions of this package are vulnerable to NULL Pointer Dereference in the fuse_uring_init_queue process. An attacker can cause the daemon to crash or exhaust system resources by triggering a failure in numa_alloc_local during io_uring queue entry setup, leading the code to proceed with NULL pointers and leak NUMA allocations when fuse_uring_register_queue fails. This is only exploitable if the io_uring transport is used; the traditional /dev/fuse path is not affected.