Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-004213)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004213 advisory. The rbd block device driver in drivers/block/rbd.c in the Linux kernel through 5.8.9 used incomplete permission checking for access to rbd devices, which could be...

kernel: nbd: fix incomplete validation of ioctl arg

A flaw has been found in the Linux kernel’s NBD drivers.The issue stems from incomplete validation of IOCTL arguments passed to the NBD driver. Specifically, oversized or unchecked arguments may lead to a signed integer overflow in blockwritefullpage and misuse of argument values cast to int in...

kernel: nbd: fix incomplete validation of ioctl arg

A flaw has been found in the Linux kernel’s NBD drivers.The issue stems from incomplete validation of IOCTL arguments passed to the NBD driver. Specifically, oversized or unchecked arguments may lead to a signed integer overflow in blockwritefullpage and misuse of argument values cast to int in...

kernel: nbd: fix incomplete validation of ioctl arg

A flaw has been found in the Linux kernel’s NBD drivers.The issue stems from incomplete validation of IOCTL arguments passed to the NBD driver. Specifically, oversized or unchecked arguments may lead to a signed integer overflow in blockwritefullpage and misuse of argument values cast to int in...

CVE-2025-68823

In the Linux kernel, the following vulnerability has been resolved: ublk: fix deadlock when reading partition table When one processsuch as udev opens ublk block device e.g., to read the partition table via bdevopen, a deadlock1 can occur: 1. bdevopen grabs disk-openmutex 2. The process issues...

CVE-2025-68823

CVE-2025-68823: Linux kernel ublk deadlock when reading partition table. If a process (e.g., udev) opens a ublk block device to read the partition table via bdev_open(), a deadlock can occur because blkdev_release() re-acquires disk->open_mutex in the same context. The fix disables bottom halv...

kernel: libceph: fix potential use-after-free in have_mon_and_osd_map()

A use-after-free vulnerability was found in the Ceph client session initialization in the Linux kernel. The havemonandosdmap function checks map epochs without holding the appropriate locks, racing with concurrent map updates that free the old map. This can result in dereferencing freed memory...

kernel: libceph: fix potential use-after-free in have_mon_and_osd_map()

A use-after-free vulnerability was found in the Ceph client session initialization in the Linux kernel. The havemonandosdmap function checks map epochs without holding the appropriate locks, racing with concurrent map updates that free the old map. This can result in dereferencing freed memory...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-000319)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000319 advisory. Use-after-free vulnerability in fs/blockdev.c in the Linux kernel before 5.8 allows local users to gain privileges or cause a denial of service by leveraging imprope...

PT-2026-27650

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel where a null-pointer dereference can occur in the drbd request endio function. This happens when READ COMPLETED WITH ERROR is passed to req mod with a...

PT-2026-5535

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains an issue where references to fault configfs items are not released when a nullbX device is removed, leading to a kernel memory leak kmemleak. This occurs when t...

SUSE CVE-2022-50835

In the Linux kernel, the following vulnerability has been resolved: jbd2: add miss release buffer head in fcdoonepass In fcdoonepass miss release buffer head after use which will lead to reference count leak...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-993195)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-993195 advisory. In the Linux kernel, the following vulnerability has been resolved: rbd: avoid use-after-free in dorbdadd when rbddevcreate fails If getting an ID or setting up a wo...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-992971)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-992971 advisory. In the Linux kernel, the following vulnerability has been resolved: nbd: Fix hung when signal interrupts nbdstartdeviceioctl syzbot reported hung task 1. The followi...

EUVD-2022-55863

In the Linux kernel, the following vulnerability has been resolved: jbd2: add miss release buffer head in fcdoonepass In fcdoonepass miss release buffer head after use which will lead to reference count leak...

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...

UBUNTU-CVE-2023-54317

In the Linux kernel, the following vulnerability has been resolved: dm flakey: don't corrupt the zero page When we need to zero some range on a block device, the function blkdevissuezeropages submits a write bio with the bio vector pointing to the zero page. If we use dm-flakey with corrupt bio...

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-2022-50835

In the Linux kernel, the following vulnerability has been resolved: jbd2: add miss release buffer head in fcdoonepass In fcdoonepass miss release buffer head after use which will lead to reference count leak...

CVE-2023-54227 blk-mq: fix tags leak when shrink nr_hw_queues

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...