kernel: blk-mq: pop cached request if it is usable

A flaw was found in the Linux kernel's blk-mq component. This use-after-free vulnerability occurs when a task attempts to submit a bio a data structure for I/O operations to blk-mq. If the task is interrupted and sleeps after checking for a cached request but before using it, the cached request c...

Linux Distros Unpatched Vulnerability : CVE-2026-64017

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - blk-mq: pop cached request if it is usable When submitting a bio to blk-mq, if the task should sleep after peeking a cached request, but before it pops it, the...

CVE-2026-64017

In the Linux kernel, the following vulnerability has been resolved: blk-mq: pop cached request if it is usable When submitting a bio to blk-mq, if the task should sleep after peeking a cached request, but before it pops it, the plug flushes and calls blkmqfreeplugrqs, freeing the cachedrqs. This...

EUVD-2026-45590

In the Linux kernel, the following vulnerability has been resolved: blk-mq: pop cached request if it is usable When submitting a bio to blk-mq, if the task should sleep after peeking a cached request, but before it pops it, the plug flushes and calls blkmqfreeplugrqs, freeing the cachedrqs. This...

CVE-2026-64017 blk-mq: pop cached request if it is usable

In the Linux kernel, the following vulnerability has been resolved: blk-mq: pop cached request if it is usable When submitting a bio to blk-mq, if the task should sleep after peeking a cached request, but before it pops it, the plug flushes and calls blkmqfreeplugrqs, freeing the cachedrqs. This...

CVE-2026-64017

In the Linux kernel, the following vulnerability has been resolved: blk-mq: pop cached request if it is usable When submitting a bio to blk-mq, if the task should sleep after peeking a cached request, but before it pops it, the plug flushes and calls blkmqfreeplugrqs, freeing the cachedrqs. This...

CVE-2026-64017 blk-mq: pop cached request if it is usable

In the Linux kernel, the following vulnerability has been resolved: blk-mq: pop cached request if it is usable When submitting a bio to blk-mq, if the task should sleep after peeking a cached request, but before it pops it, the plug flushes and calls blkmqfreeplugrqs, freeing the cachedrqs. This...

PT-2026-61334

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free bug exists in the blk-mq component when submitting a bio. The issue occurs if a task sleeps after peeking at a cached request but before popping it, causing the plug to...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: blk-mq: Fixed a memory leak in blkmqinitallocatedqueue. There is a memory leak caused by modprobe nullblk.ko. Unreferenced object 0xffff8881acb1f000 size 1024: Command “modprobe”, PID 836, jiffies 4294971190 age 27.068 seconds...

SUSE CVE-2026-45890

In the Linux kernel, the following vulnerability has been resolved: xen-netback: reject zero-queue configuration from guest A malicious or buggy Xen guest can write "0" to the xenbus key "multi-queue-num-queues". The connect function in the backend only validates the upper bound requestednumqueue...

CVE-2026-45890

A flaw was found in the Linux kernel's xen-netback component. A malicious or buggy Xen guest can exploit this by writing a zero value to the 'multi-queue-num-queues' xenbus key. This improper input validation can trigger a warning in the kernel's memory allocation, leading to a guest-to-host Deni...

EUVD-2026-32356

In the Linux kernel, the following vulnerability has been resolved: xen-netback: reject zero-queue configuration from guest A malicious or buggy Xen guest can write "0" to the xenbus key "multi-queue-num-queues". The connect function in the backend only validates the upper bound requestednumqueue...

CVE-2026-45890

In the Linux kernel, the following vulnerability has been resolved: xen-netback: reject zero-queue configuration from guest A malicious or buggy Xen guest can write "0" to the xenbus key "multi-queue-num-queues". The connect function in the backend only validates the upper bound requestednumqueue...

UBUNTU-CVE-2026-45890

In the Linux kernel, the following vulnerability has been resolved: xen-netback: reject zero-queue configuration from guest A malicious or buggy Xen guest can write "0" to the xenbus key "multi-queue-num-queues". The connect function in the backend only validates the upper bound requestednumqueue...

CVE-2026-46079 rbd: fix null-ptr-deref when device_add_disk() fails

In the Linux kernel, the following vulnerability has been resolved: rbd: fix null-ptr-deref when deviceadddisk fails dorbdadd publishes the device with deviceadd before calling deviceadddisk. If deviceadddisk fails after deviceadd succeeds, the error path calls rbdfreedisk directly and then later...

CVE-2026-45890

The CVE-2026-45890 issue affects the Linux kernel xen-netback in Xen environments. The backend validated the upper bound of multi-queue config but did not reject zero, allowing a guest to set multi-queue-num-queues to 0. This leads to vzalloc(array_size(0, sizeof(struct xenvif_queue))) and WARN_O...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: blk-mq: Fixed a possible memory leak when registering the ‘hctx’ structure failed. There is one issue that arises during fault injection tests: An unreferenced object with a size of 512 bytes: bash comm "insmod", pid 308021,...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: blk-mq: The issue of tag leaks during the shrink nrhwqueues operation has been fixed. Although we don’t need to reallocate the set-tags array when performing shrink nrhwqueues, we still need to free those tags. Otherwise, these...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: blk-mq: Fixed the NULL dereference on q-elevator in blkmqelvswitchnone. After acquiring the q-sysfslock, q-elevator may become NULL due to the elevator switch. Fixed the NULL dereference on q-elevator by checking it with a lock...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-021568)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021568 advisory. In the Linux kernel, the following vulnerability has been resolved: blk-mq: use quiesced elevator switch when reinitializing queues The hctx's runwork may be racing...