Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: nullblk: Serialized configuration attribute updates with device setup. The attribute store methods generated by NULLBDEVICEATTR refuse to change the configuration of a live device by testing NULLBDEVFLCONFIGURED. However, this fl...

Astra Linux – vulnerability in linux-6.1

In the Linux kernel, the following vulnerability has been resolved: nullblk: serialize configfs attribute stores with the lock The NULLBDEVICEATTR store takes no lock: applyfn attributes submitqueues, pollqueues get dev-NAME written again after applyfn returns, outside its lock; APPLY=NULL...

CVE-2026-90190

A flaw was found in the nullblk module of the Linux kernel. A race condition occurs during initialization where a mutex is accessed before it is properly set up. A local attacker, by creating a directory in /sys/kernel/config/nullb/ at a specific time, could trigger this race condition. This coul...

CVE-2026-90186

A flaw was found in the Linux kernel's nullblk module. A local user can cause a system crash by attempting to resize device queues while a shared tag set is active. This improper handling of queue resizing leads to a null pointer dereference, which can result in a denial of service...

CVE-2026-90184

A flaw was found in the Linux kernel's nullblk module. A race condition exists where configfs attribute updates can occur concurrently with the nullblk device setup. This lack of synchronization can lead to incorrect device configuration, resulting in a system crash Denial of Service or failure t...

CVE-2026-90189

A flaw was found in the Linux kernel's nullblk component. A race condition can occur when the configfs subsystem is registered before default devices are created. This allows a local attacker, by performing a specific sequence of operations, to trigger a Use-After-Free UAF vulnerability. This cou...

CVE-2026-90185

A flaw was found in the Linux kernel's nullblk module. This vulnerability occurs because concurrent operations on configfs attributes are not properly synchronized. A local user could exploit this timing issue to modify data during device setup, leading to an out-of-bounds memory access. This cou...

CVE-2026-90187

A flaw was found in the nullblk module of the Linux kernel. When a zoned nullblk device is powered off and then on again, the memory allocated for device zones is not properly freed. This oversight causes a memory leak with each power cycle, which could lead to resource exhaustion over time...

CVE-2026-90188

A flaw was found in the Linux kernel's nullblk module. When sharedtags is enabled and device creation fails after allocating a global tag set, the global tag set is not properly freed. This oversight leads to a permanent memory leak, which could potentially result in a Denial of Service DoS due t...

SUSE CVE-2026-90184

In the Linux kernel, the following vulnerability has been resolved: nullblk: serialize configfs attribute updates with device setup The attribute store methods generated with NULLBDEVICEATTR refuse to change the configuration of a live device by testing NULLBDEVFLCONFIGURED, but that flag is only...

SUSE CVE-2026-90185

In the Linux kernel, the following vulnerability has been resolved: nullblk: serialize configfs attribute stores with the lock The NULLBDEVICEATTR store takes no lock: applyfn attributes submitqueues, pollqueues get dev-NAME written again after applyfn returns, outside its lock; APPLY=NULL...

SUSE CVE-2026-90187

In the Linux kernel, the following vulnerability has been resolved: nullblk: free zones array on device power-off nullinitzoneddev allocates dev-zones when a zoned device is powered on, but nulldeldev never frees it on power-off; dev-zones is only freed later in nullfreedev, when the configfs...

SUSE CVE-2026-90188

In the Linux kernel, the following vulnerability has been resolved: nullblk: free global tagset on init error path If sharedtags is enabled, nullsetuptagset allocates the global tagset via nullinitglobaltagset. If device creation later fails, errdev destroys the default devices and calls...

SUSE CVE-2026-90189

In the Linux kernel, the following vulnerability has been resolved: nullblk: register configfs subsystem after creating default devices In nullinit, configfsregistersubsystem currently runs before registerblkdev, so when nullblk is built as a module, a racing mkdir + poweron from userspace can...

SUSE CVE-2026-90190

In the Linux kernel, the following vulnerability has been resolved: nullblk: use DEFINEMUTEX for the file-scope mutex In nullinit, mutexinit&lock currently happens after configfsregistersubsystem, which exposes the nullb subsystem to userspace. A racing mkdir into /sys/kernel/config/nullb/ can...

SUSE CVE-2026-90186

In the Linux kernel, the following vulnerability has been resolved: nullblk: reject per-device queue resize for shared tag set When sharedtags is enabled, nullsetuptagset makes the device use the global tagset, whose driverdata stays NULL. nullmapqueues therefore falls back to the module-wide...

Linux Distros Unpatched Vulnerability : CVE-2026-90184

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nullblk: serialize configfs attribute updates with device setup The attribute store methods generated with NULLBDEVICEATTR refuse to change the configuration of...

Linux Distros Unpatched Vulnerability : CVE-2026-90189

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nullblk: register configfs subsystem after creating default devices In nullinit, configfsregistersubsystem currently runs before registerblkdev, so when nullblk...

Linux Distros Unpatched Vulnerability : CVE-2026-90190

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nullblk: use DEFINEMUTEX for the file-scope mutex In nullinit, mutexinit&lock currently happens after configfsregistersubsystem, which exposes the nullb subsyst...

Linux Distros Unpatched Vulnerability : CVE-2026-90186

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nullblk: reject per-device queue resize for shared tag set When sharedtags is enabled, nullsetuptagset makes the device use the global tagset, whose driverdata...