PT-2026-68421

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A data race exists in the fuse-uring component on weakly-ordered architectures. The store to fiq-ops can be reordered after the store to ring-ready, which may allow a CPU to dispatch...

Linux Distros Unpatched Vulnerability : CVE-2026-64588

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 data races on ring-ready On weakly-ordered architectures, the store to fiq-o...

CVE-2026-64588

In the Linux kernel, the following vulnerability has been resolved: fuse-uring: fix data races on ring-ready On weakly-ordered architectures, the store to fiq-ops can be reordered past the store to ring-ready, allowing a CPU that sees ring-ready == true via fuseuringready to dispatch requests...

CVE-2026-64258

A flaw was found in the fuse-uring component of the Linux kernel. When a copy operation to the userspace ring buffer fails, a request can be terminated improperly, leading to a NULL pointer dereference. This vulnerability could allow a local attacker to cause a system crash, resulting in a Denial...

CVE-2026-64262

A flaw was found in the fuse-uring component of the Linux kernel. When iouring task work is canceled, the system fails to properly end a fusereq FUSE request. This can cause the originating system call thread to block indefinitely, leading to a Denial of Service DoS for the affected system...

CVE-2026-64263

A flaw was found in the Linux kernel's fuse-uring component. This vulnerability arises from the incorrect handling of cancelled entries, which are moved to a list where a subsequent operation unconditionally attempts to access a null pointer. A local attacker could exploit this flaw to trigger a...

CVE-2026-64259

A flaw was found in the Linux kernel's fuse-uring component. A local attacker could exploit a race condition by sending specially crafted requests before they are fully processed. This could lead to a use-after-free vulnerability, potentially allowing for arbitrary code execution or denial of...

CVE-2026-64260

A flaw was found in the fuse-uring component of the Linux kernel. A race condition exists where the queue-stopped flag is not consistently checked under a lock. This can allow a struct fusereq to be prematurely freed while other operations are still in progress, potentially leading to memory...

CVE-2026-64261

A flaw was found in the Linux kernel's fuse-uring component. This use-after-free vulnerability allows a local attacker to potentially achieve privilege escalation. The issue arises when the fuseuringasyncstopqueues function attempts to access memory that has already been freed, leading to...

SUSE 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...

SUSE 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...

SUSE 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...

SUSE 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 ...

SUSE CVE-2026-64264

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

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...

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-2026-64262

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

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-2026-64258

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-2026-64261

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 ...