CVE-2026-64258fuse-uring: remove request-less entries from ent_w_req_queue to fix NULL deref
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: fuse-uring: remove request-less entries from ent_w_req_queue to fix NULL deref If a copy into the userspace ring buffer fails, a request will be terminated and fuse_uring_req_end() will set ent->fuse_req to NULL but it will leave the entry on ent_w_req_queue in FRRS_FUSE_REQ state. This can lead to a NULL deref if the request expiration logic scans ent_w_req_queue in the window before the entry is moved off it. Fix this by taking the entry off ent_w_req_queue and changing its state from FRRS_FUSE_REQ to FRRS_INVALID before terminating the request.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 4fea593e625cd50d4d11be227007849b12f17bfb builds before 0b466cf1b96e191b06b496c4de79da15315c3a9a; 4fea593e625cd50d4d11be227007849b12f17bfb builds before 0a7f33010c0e4cd92937e088a54350381fd0fbf2; 4fea593e625cd50d4d11be227007849b12f17bfb builds before 1c57a69be962d459c5e705f5cb4355b841b3461c | CNA record |
linux linux_kernel linux:linux_kernel | from 6.16 before 6.18.39; from 6.19 before 7.1.4 | NVD |
References
- https://git.kernel.org/stable/c/0b466cf1b96e191b06b496c4de79da15315c3a9apatch
- https://git.kernel.org/stable/c/0a7f33010c0e4cd92937e088a54350381fd0fbf2patch
- https://git.kernel.org/stable/c/1c57a69be962d459c5e705f5cb4355b841b3461cpatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.