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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-64258

fuse-uring: remove request-less entries from ent_w_req_queue to fix NULL deref

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 4fea593e625cd50d4d11be227007849b12f17bfb to < 0b466cf1b96e191b06b496c4de79da15315c3a9aaffected
  • 4fea593e625cd50d4d11be227007849b12f17bfb to < 0a7f33010c0e4cd92937e088a54350381fd0fbf2affected
  • 4fea593e625cd50d4d11be227007849b12f17bfb to < 1c57a69be962d459c5e705f5cb4355b841b3461caffected

Linux Linux

Default version status: affected

  • 6.16affected
  • 0 to < 6.16unaffected
  • 6.18.39 to ≤ 6.18.*unaffected
  • 7.1.4 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References