CVE-2026-64261

The CVE-2026-64261 issue affects the Linux kernel’s fuse-uring component. The vulnerability arises when fuse_uring_async_stop_queues() might run after the last reference on ring->queue_refs has been dropped, risking use-after-free. Red Hat, SUSE, Debian OSV, and other trackers confirm the flaw...

CVE-2026-64261 fuse-uring: Avoid use-after-free in fuse_uring_async_stop_queues

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: Avoid use-after-free in fuseuringasyncstopqueues fuseuringasyncstopqueues might run when the last reference on ring-queuerefs was already dropped. In order to avoid an early destruction a reference on struct fuseconn ...

CVE-2026-64260 fuse-uring: Avoid queue->stopped races and set/read that value under lock

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: Avoid queue-stopped races and set/read that value under lock There are several readers of queue-stopped that check the value under lock, but fuseuringcommitfetch did not and actually the value was not set under the lo...

CVE-2026-64261

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: Avoid use-after-free in fuseuringasyncstopqueues fuseuringasyncstopqueues might run when the last reference on ring-queuerefs was already dropped. In order to avoid an early destruction a reference on struct fuseconn ...

CVE-2026-64260

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: Avoid queue-stopped races and set/read that value under lock There are several readers of queue-stopped that check the value under lock, but fuseuringcommitfetch did not and actually the value was not set under the lo...

CVE-2026-64260 fuse-uring: Avoid queue->stopped races and set/read that value under lock

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: Avoid queue-stopped races and set/read that value under lock There are several readers of queue-stopped that check the value under lock, but fuseuringcommitfetch did not and actually the value was not set under the lo...

CVE-2026-64259 fuse-uring: make a fuse_req on SQE commit only findable after memcpy

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: make a fusereq on SQE commit only findable after memcpy Bad userspace might try to trick us and send commit SQEs request unique / commit-id of requests that are not even send to fuse-server iouringcmddone not called...

CVE-2026-64258 fuse-uring: remove request-less entries from ent_w_req_queue to fix NULL deref

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: remove request-less entries from entwreqqueue to fix NULL deref If a copy into the userspace ring buffer fails, a request will be terminated and fuseuringreqend will set ent-fusereq to NULL but it will leave the entry...

CVE-2026-64259 fuse-uring: make a fuse_req on SQE commit only findable after memcpy

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: make a fusereq on SQE commit only findable after memcpy Bad userspace might try to trick us and send commit SQEs request unique / commit-id of requests that are not even send to fuse-server iouringcmddone not called...

CVE-2026-64258

CVE-2026-64258 — Linux kernel (fuse-uring) : A NULL pointer dereference could occur in the fuse_uring path when a copy to the userspace ring buffer fails. The root cause is that, after fuse_uring_req_end() sets ent->fuse_req to NULL, the ent_w_req_queue entry remained in FRRS_FUSE_REQ, risking...

EUVD-2026-48970

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: remove request-less entries from entwreqqueue to fix NULL deref If a copy into the userspace ring buffer fails, a request will be terminated and fuseuringreqend will set ent-fusereq to NULL but it will leave the entry...

CVE-2026-64259

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: make a fusereq on SQE commit only findable after memcpy Bad userspace might try to trick us and send commit SQEs request unique / commit-id of requests that are not even send to fuse-server iouringcmddone not called...

CVE-2026-64259

CVE-2026-64259 (Linux kernel, fuse-uring) : A race allowed a use-after-free in fuse-uring by letting a fuse_req on an SQE commit become findable after memcpy, if a malicious userspace sent commit SQEs before the request reached fuse-server. The fix reorders operations: moving fuse_uring_add_to_pq...

CVE-2026-64258

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: remove request-less entries from entwreqqueue to fix NULL deref If a copy into the userspace ring buffer fails, a request will be terminated and fuseuringreqend will set ent-fusereq to NULL but it will leave the entry...

CVE-2026-64258 fuse-uring: remove request-less entries from ent_w_req_queue to fix NULL deref

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: remove request-less entries from entwreqqueue to fix NULL deref If a copy into the userspace ring buffer fails, a request will be terminated and fuseuringreqend will set ent-fusereq to NULL but it will leave the entry...

EUVD-2026-48971

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: make a fusereq on SQE commit only findable after memcpy Bad userspace might try to trick us and send commit SQEs request unique / commit-id of requests that are not even send to fuse-server iouringcmddone not called...

PT-2026-64484

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the fuse-uring component where the fuse uring cancel function moves available entries without attached requests to the ent in userspace list. The ent list request expire...

PT-2026-64483

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the fuse-uring component where the fuse uring send in task function fails to properly discharge the ring entry's reference to the fuse req when io uring delivers task...

Linux Distros Unpatched Vulnerability : CVE-2026-64262

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: fuse-uring: end fusereq on io-uring cancel task work When iouring delivers task work with...

Linux Distros Unpatched Vulnerability : CVE-2026-64260

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: fuse-uring: Avoid queue-stopped races and set/read that value under lock There are several...