- Description
- libfuse is the reference implementation of the Linux FUSE. From version 3.18.0 to before version 3.18.2, a NULL pointer dereference and memory leak in fuse_uring_init_queue allows a local user to crash the FUSE daemon or cause resource exhaustion. When numa_alloc_local fails during io_uring queue entry setup, the code proceeds with NULL pointers. When fuse_uring_register_queue fails, NUMA allocations are leaked and the function incorrectly returns success. Only the io_uring transport is affected; the traditional /dev/fuse path is not affected. PoC confirmed with AddressSanitizer/LeakSanitizer. This issue has been patched in version 3.18.2.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
- Products
- libfuse
CVSS 3.1
- Type
- Secondary
- Base score
- 5.5
- Impact score
- 3.6
- Exploitability score
- 1.8
- Vector string
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Severity
- MEDIUM
- security-advisories@github.com
- CWE-476
- Hype score
- Not currently trending
[
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:libfuse_project:libfuse:*:*:*:*:*:*:*:*",
"matchCriteriaId": "83EF6E3E-F5F2-4CE2-B497-62493DAB2A1F",
"versionEndExcluding": "3.18.2",
"versionStartIncluding": "3.18.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
]