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CVE-2026-64258

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.

Metadata

CVE ID
CVE-2026-64258
State
PUBLISHED
Assigner
Linux
Reserved
2026-07-19 15:36 UTC
Published
2026-07-25 08:49 UTC
Last updated
2026-07-25 08:49 UTC
Vendor / Product
Linux / Linux
Sources
cve.org  ·  NVD

Severity & Metrics

No CVSS data available.

Affected products (2)
VendorProductPlatformVersions
Linux Linux 4fea593e625cd50d4d11be227007849b12f17bfb < 0b466cf1b96e191b06b496c4de79da15315c3a9a, 4fea593e625cd50d4d11be227007849b12f17bfb < 0a7f33010c0e4cd92937e088a54350381fd0fbf2, 4fea593e625cd50d4d11be227007849b12f17bfb < 1c57a69be962d459c5e705f5cb4355b841b3461c
Linux Linux 6.16, 0 < 6.16, 6.18.39 ≤ 6.18.*, 7.1.4 ≤ 7.1.* …
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