CVE-2026-64262 fuse-uring: end fuse_req on io-uring cancel task work

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 tw.cancel set PFEXITING, PFKTHREAD fallback, or percpurefisdying on the ring context, fuseuringsendintask takes the cancel branch, assigns...

CVE-2026-64262 fuse-uring: end fuse_req on io-uring cancel task work

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 tw.cancel set PFEXITING, PFKTHREAD fallback, or percpurefisdying on the ring context, fuseuringsendintask takes the cancel branch, assigns...

EUVD-2026-48972

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-2026-64260 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-2026-64260

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

CVE-2026-64260 affects the Linux kernel’s fuse-uring path. The issue concerns races on the queue->stopped flag: several readers check the value under a lock, but fuse_uring_commit_fetch() (and in fuse_uring_abort_end_requests() as noted) did not, meaning the flag could be observed/modified wit...

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-2026-64259

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 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

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

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...

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-2026-64258 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-2026-64258

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...

Linux Distros Unpatched Vulnerability : CVE-2026-64258

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: remove request-less entries from entwreqqueue to fix NULL deref If a copy into t...

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...

CVE-2026-64264: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: fix EFAULT clobber in fuseuringcommit copyfromuser returns the number of bytes not copied as an unsigned residual on failure 1..sizeofstruct fuseoutheader. fuseuringcommit stores that residual in ssizet err, sets...

CVE-2026-64263: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: fix moving cancelled entry to entinuserspace list fuseuringcancel moves entries that are available these have no reqs attached to the entinuserspace list. entlistrequestexpired checks the first entry on entinuserspace...