CVE-2026-90095 fuse: Fix the condition to enable over-io-uring

In the Linux kernel, the following vulnerability has been resolved: fuse: Fix the condition to enable over-io-uring The existing condition in fuseuringcmd is there only to avoid disabling io-uring for connections that already run with it, missing was a condition to refuse any IORINGOPURINGCMD if...

CVE-2026-90096 fuse: invalidate the correct range after O_APPEND direct write

In the Linux kernel, the following vulnerability has been resolved: fuse: invalidate the correct range after OAPPEND direct write fusedirectwriteiter captures pos before genericwritechecks, which moves kipos to EOF for OAPPEND writes: fusedirectwriteiter pos = iocb-kipos; / 0 user-supplied /...

CVE-2026-90095: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: fuse: Fix the condition to enable over-io-uring The existing condition in fuseuringcmd is there only to avoid disabling io-uring for connections that already run with it, missing was a condition to refuse any IORINGOPURINGCMD if...

PT-2026-94487

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A null pointer dereference occurs in the FUSE filesystem when the root inode allocation fails, typically under memory pressure. The function fuse fill super submount fails to check if th...

PT-2026-94444

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the fuse direct write iter function where the pos variable is captured before the generic write checks function is called. For writes using the O APPEND flag, generic...

CVE-2026-90139: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: fuse: check for NULL root inode in fusefillsupersubmount fuseiget can return NULL when its inode allocation fails, but fusefillsupersubmount passed the result straight to getfuseinode and decremented fi-nlookup without checking i...

CVE-2026-90096: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: fuse: invalidate the correct range after OAPPEND direct write fusedirectwriteiter captures pos before genericwritechecks, which moves kipos to EOF for OAPPEND writes: fusedirectwriteiter pos = iocb-kipos; / 0 user-supplied /...

PT-2026-94488

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A Use-After-Free UAF issue exists in the cuse module of the Linux kernel. The fuse conn put function frees the fuse conn using call rcu asynchronously. If the cuse module is removed via...

CVE-2026-90140: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: cuse: wait for pending RCU callbacks on module exit Since commit 053fc4f755ad "fuse: fix UAF in rcu pathwalks", fuseconnput frees the fuseconn through callrcu rather than synchronously. For cuse, fc-release is cusefcrelease, whic...

PT-2026-94443

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the fuse implementation where the fuse uring cmd function fails to refuse IORING OP URING CMD requests if the connection was not enabled due to a missing FUSE OVER IO...

Astra Linux – Vulnerability in sshfs-fuse

SSHFS is a network filesystem client for connecting to SSH servers. Prior to version 3.7.6, a rogue SFTP server could return absolute symlink targets or relative targets containing parent-directory components, which SSHFS would pass through FUSE for resolution by the client kernel against the loc...

Astra Linux – Vulnerability in Linux, Linux 5.10

A use-after-free flaw was discovered in the Linux kernel’s FUSE filesystem, where a user triggers the write function. This flaw allows a local user to gain unauthorized access to data from the FUSE filesystem, resulting in privilege escalation...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerabilities have been resolved: fuse: The code must initialize the contents of pages beyond the end-of-file before marking the pages as “uptodate”. fusenotifystore, unlike fusedoreadpage, does not enable page zeroing because it can be used to change partial...

Linux Kernel FUSE Subsystem Race Condition Local Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of fusereq...

SUSE CVE-2026-80946

In the Linux kernel, the following vulnerability has been resolved: fuse: copy request headers via a stack buffer for io-uring The fuse-io-uring transport copies req-in.h out to the ring in fuseuringcopytoring and req-out.h back in fuseuringcommit. Both headers live inside the fuserequest slab...

SUSE CVE-2026-89560

In the Linux kernel, the following vulnerability has been resolved: landlock: Require LANDLOCKACCESSFSMAKEREG for whiteout creation Whiteout objects are used in the upper layer of an OverlayFS to indicate that the file with this name does not exist in the unified view, even if it is present in on...

Linux Distros Unpatched Vulnerability : CVE-2026-80946

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - fuse: copy request headers via a stack buffer for io-uring The fuse-io-uring transport copies req-in.h out to the ring in fuseuringcopytoring and req-out.h back...

CVE-2026-80946

A flaw was found in the Linux kernel's FUSE Filesystem in Userspace component. The io-uring transport attempts to copy request headers directly to or from user space without proper memory validation. A local attacker could exploit this vulnerability, leading to a kernel panic and a denial of...

DEBIAN-CVE-2026-89560

In the Linux kernel, the following vulnerability has been resolved: landlock: Require LANDLOCKACCESSFSMAKEREG for whiteout creation Whiteout objects are used in the upper layer of an OverlayFS to indicate that the file with this name does not exist in the unified view, even if it is present in on...

CVE-2026-80946

In the Linux kernel, the following vulnerability has been resolved: fuse: copy request headers via a stack buffer for io-uring The fuse-io-uring transport copies req-in.h out to the ring in fuseuringcopytoring and req-out.h back in fuseuringcommit. Both headers live inside the fuserequest slab...