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-2026-48970

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

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...

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-2026-64264: 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...

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-2026-64258

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-2026-64261

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 use-after-free in fuseuringasyncstopqueues fuseuringasyncstopqueues might...

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...

PT-2026-64485

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 commit function incorrectly handles failures during memory copying. When copy from user fails, it returns a positive...

PT-2026-64482

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the fuse-uring component. The function fuse uring async stop queues may execute after the final reference on the ring-queue refs variable has been droppe...

PT-2026-64479

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A NULL dereference issue exists in the fuse-uring component. When a copy into the userspace ring buffer fails, the fuse uring req end function sets ent-fuse req to NULL but leaves the...

PT-2026-64481

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the fuse-uring component. The fuse uring commit fetch function fails to check the queue-stopped value under a lock, and the fuse uring abort end requests...

CVE-2026-64259: Use After Free

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: NULL Pointer Dereference

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...

Linux Distros Unpatched Vulnerability : CVE-2026-64264

"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: fix EFAULT clobber in fuseuringcommit copyfromuser returns the number of bytes...

CVE-2026-64262: Undefined Security Weakness

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-2026-64260: Concurrent Execution using Shared Resource with Improper Synchronization

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...

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...