CVE-2026-64258

CVE CVE-2026-64258EUVD EUVD-2026-48970Published 2026-07-25T08:49:10.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 4fea593e625cd50d4d11be227007849b12f17bfb <0b466cf1b96e191b06b496c4de79da15315c3a9a; patch: 7.1.4; 4fea593e625cd50d4d11be227007849b12f17bfb <0a7f33010c0e4cd92937e088a54350381fd0fbf2; patch: 0; patch: 6.18.39; patch: 7.2-rc1; 4fea593e625cd50d4d11be227007849b12f17bfb <1c57a69be962d459c5e705f5cb4355b841b3461c; 6.16

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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