Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 4fea593e625cd50d4d11be227007849b12f17bfb before 0b466cf1b96e191b06b496c4de79da15315c3a9a; affected 4fea593e625cd50d4d11be227007849b12f17bfb before 0a7f33010c0e4cd92937e088a54350381fd0fbf2; affected 4fea593e625cd50d4d11be227007849b12f17bfb before 1c57a69be962d459c5e705f5cb4355b841b3461c |
| Linux / Linux | affected 6.16; unaffected 0 before 6.16; unaffected 6.18.39 through 6.18.*; unaffected 7.1.4 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.