OESA-2026-3987 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciconn: Fix null ptr deref in hciabortconn hciabortconn read hciskbeventhdev-sentcmd when a connection was pending, but hdev-sentcmd can be NULL whil...

DEBIAN-CVE-2026-90095

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...

EUVD-2026-81956

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-2026-90095

CVE-2026-90095 affects the Linux kernel FUSE subsystem. The root cause is a missing condition in fuse_uring_cmd() that failed to refuse IORING_OP_URING_CMD when the FUSE_OVER_IO_URING flag was absent from the FUSE_INIT reply. Without this guard, the barrier in fuse_uring_ready() does not function...

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...

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

In the Linux kernel, the following vulnerability has been resolved: fs/aio: Restricted kiocbsetcancelfn to I/O submitted via libaio. If kiocbsetcancelfn is called for I/O submitted via iouring, the following kernel warning appears: WARNING: CPU: 3 PID: 368 at fs/aio.c:598 kiocbsetcancelfn+0x9c/0x...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Media: dvb-core: Fixed an issue where incorrect reinitializations of the ringbuffer occurred upon reopening the device. The dvbdvropen function calls dvbringbufferinit, when a new reader opens the DVR device. dvbringbufferinit th...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: nullblk: fixed handling of poll request timeouts When performing the iouring benchmark on /dev/nullb0, it’s easy for the kernel to crash if poll requests time out, as reported by David. 1 BUG: Kernel NULL pointer dereferencing...

Astra Linux – Vulnerability in Linux 5.10

There is a vulnerability related to time-of-check to time-of-use issues in the iouringsubsystem’s IORINGOPCLOSE operation in the Linux kernel versions 5.6 to 5.11 inclusive. This vulnerability allows a local user to elevate their privileges to root. Introduced in the version...

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...

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...

UBUNTU-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...

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...

DEBIAN-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...

EUVD-2026-76269

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...

CVE-2026-80946

This Linux kernel vulnerability affects the FUSE-io-uring transport. The fuse_request slab cache (fuse_req_cachep) is created without a usercopy whitelist , so directly copying req->in.h to the ring or req->out.h back from the ring trips CONFIG_HARDENED_USERCOPY , triggering a kernel panic ...

CVE-2026-80946 fuse: copy request headers via a stack buffer for io-uring

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...

CVE-2026-80946 fuse: copy request headers via a stack buffer for io-uring

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...

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...