SUSE 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

The CVE-2026-64017 issue affects the Linux kernel’s blk-mq path. A use-after-free could occur when submitting a bio to blk-mq if a cached request is peeked and then the code path decides to sleep before popping it; a plug flush would free cached_rqs via blk_mq_free_plug_rqs. The fix pops the cach...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: blk-mq: Fixed a null pointer dereference in blkmqclearrqmapping. Our syzkaller report identified a null pointer dereference. The root cause is as follows: - blkmqallocmapandrqs: set-tagshctxidx = blkmqallocmapandrqs. -...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: blk-mq: The crypto keyslot must be released before reporting I/O completion. Once all I/O using the blkcryptokey is completed, the file systems can call blkcryptoevictkey. However, the block layer currently does not call...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: blk-mq: Do not modify -tagset in blkmqgetsqhctx. The function blkmqrunhwqueues may be called when there are no requests queued, and after the queue is cleaned up, -tagset is freed. This is because the lifetime of -tagset is manag...

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

In the Linux kernel, the following vulnerability has been resolved: blk-mq: Fixed an issue where IO operations could hang due to a race condition involving the sbitmap wakeup mechanism. In blkmqmarktagwait, addwaitqueue might be re-ordered. In addition, blkmqgetdrivertag might fail if the driver...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013671)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013671 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...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix NULL dereference on q-elevator in blkmqelvswitchnone CVE-2023-53292 In the Linux kernel, the following vulnerability has been resolved: block: fix race between setblocksize and read paths CVE-2025-3807...

UBUNTU-CVE-2025-68756

In the Linux kernel, the following vulnerability has been resolved: block: Use RCU in blkmqunquiescetagset instead of set-taglistlock blkmqadd,delqueuetagset functions add and remove queues from tagset, the functions make sure that tagset and queues are marked as shared when two or more queues ar...

UBUNTU-CVE-2023-54227

In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix tags leak when shrink nrhwqueues Although we don't need to realloc set-tags when shrink nrhwqueues, we need to free them. Or these tags will be leaked. How to reproduce: 1. mount -t configfs configfs /mnt 2. modprobe...

CVE-2023-54227

In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix tags leak when shrink nrhwqueues Although we don't need to realloc set-tags when shrink nrhwqueues, we need to free them. Or these tags will be leaked. How to reproduce: 1. mount -t configfs configfs /mnt 2. modprobe...

CVE-2023-54227

CVE-2023-54227 affects the Linux kernel blk-mq by leaking tags during shrink_nr_hw_queues. Reproduction shows 9 tags allocated for 8 submit queues + 1 poll queue, but when nr_hw_queues shrinks to 5, only 5 tags are freed, leaking the other 4. The issue is addressed in kernel patches; multiple OS ...

CVE-2023-54227

In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix tags leak when shrink nrhwqueues Although we don't need to realloc set-tags when shrink nrhwqueues, we need to free them. Or these tags will be leaked. How to reproduce: 1. mount -t configfs configfs /mnt 2. modprobe...

CVE-2025-40146

In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix potential deadlock while nrrequests grown Allocate and free schedtags while queue is freezed can deadlock1, this is a long term problem, hence allocate memory before freezing queue and free memory after queue is...

SUSE CVE-2025-40125

In the Linux kernel, the following vulnerability has been resolved: blk-mq: check kobject stateinsysfs before deleting in blkmqunregisterhctx In blkmqupdatenrhwqueues the return value of blkmqsysfsregisterhctxs is not checked. If sysfs creation for hctx fails, later changing the number of hwqueue...

UBUNTU-CVE-2025-40125

In the Linux kernel, the following vulnerability has been resolved: blk-mq: check kobject stateinsysfs before deleting in blkmqunregisterhctx In blkmqupdatenrhwqueues the return value of blkmqsysfsregisterhctxs is not checked. If sysfs creation for hctx fails, later changing the number of hwqueue...

CVE-2025-40146 blk-mq: fix potential deadlock while nr_requests grown

In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix potential deadlock while nrrequests grown Allocate and free schedtags while queue is freezed can deadlock1, this is a long term problem, hence allocate memory before freezing queue and free memory after queue is...

CVE-2025-40125

CVE-2025-40125 : In the Linux kernel blk-mq subsystem, kobject deletion can race with sysfs setup. If sysfs creation for an hctx fails, the code may call kobject_del unconditionally, leading to a warning during nr_hw_queues changes or disk removal. The root cause is not checking the kobject creat...

Linux Distros Unpatched Vulnerability : CVE-2025-39999

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: blk-mq: fix blkmqtags double free while nrrequests grown In the case user trigger tags grow ...

CVE-2025-39999

In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix blkmqtags double free while nrrequests grown In the case user trigger tags grow by queue sysfs attribute nrrequests, hctx-schedtags will be freed directly and replaced with a new allocated tags, see blkmqtagupdatedept...