CVE-2026-53064 dm cache: fix null-deref with concurrent writes in passthrough mode

In the Linux kernel, the following vulnerability has been resolved: dm cache: fix null-deref with concurrent writes in passthrough mode In passthrough mode, when dm-cache starts to invalidate a cache entry and bio prison cell lock fails due to concurrent write to the same cached block, mg-cell...

EUVD-2026-38931

In the Linux kernel, the following vulnerability has been resolved: dm cache: fix write hang in passthrough mode The invalidateremove function has incomplete logic for handling write hit bios after cache invalidation. It sets up the remapping for the overwritebio but then drops it immediately...

CVE-2026-53062

The CVE-2026-53062 entry describes a Linux kernel flaw in the dm-cache policy smq in passthrough mode where invalidate_mapping is invoked concurrently by multiple workers without proper locking. This race can cause data races on the allocated blocks counter and potential use-after-free issues in ...

CVE-2026-53062 dm cache policy smq: fix missing locks in invalidating cache blocks

In the Linux kernel, the following vulnerability has been resolved: dm cache policy smq: fix missing locks in invalidating cache blocks In passthrough mode, the policy invalidatemapping operation is called simultaneously from multiple workers, thus it should be protected by a lock. Otherwise, we...

EUVD-2026-38930

In the Linux kernel, the following vulnerability has been resolved: dm cache policy smq: fix missing locks in invalidating cache blocks In passthrough mode, the policy invalidatemapping operation is called simultaneously from multiple workers, thus it should be protected by a lock. Otherwise, we...

EUVD-2026-38929

In the Linux kernel, the following vulnerability has been resolved: dm cache: fix dirty mapping checking in passthrough mode switching As mentioned in commit 9b1cc9f251af "dm cache: share cache-metadata object across inactive and active DM tables", dm-cache assumed table reload occurs after...

EUVD-2026-38927

In the Linux kernel, the following vulnerability has been resolved: dm log: fix out-of-bounds write due to regioncount overflow The local variable regioncount in createlogcontext is declared as unsigned int 32-bit, but dmsectordivup returns sectort 64-bit. When a device-mapper target has a...

CVE-2026-53060

CVE-2026-53060 is a Linux kernel memory-leak in dm_cache_metadata_abort when a root_lock can’t be acquired due to a read-only metadata state. The issue is fixed in updated kernels (e.g., Root’s rootio-linux patches for Ubuntu 22.04/24.04 and related distro advisories). Affected environments shoul...

CVE-2026-53059 dm log: fix out-of-bounds write due to region_count overflow

In the Linux kernel, the following vulnerability has been resolved: dm log: fix out-of-bounds write due to regioncount overflow The local variable regioncount in createlogcontext is declared as unsigned int 32-bit, but dmsectordivup returns sectort 64-bit. When a device-mapper target has a...

CVE-2026-53059

The CVE-2026-53059 issue is a Linux kernel dm-log out-of-bounds write caused by an unsigned 32-bit region_count in create_log_context() overflowing when dm_sector_div_up() returns a 64-bit value. Large region_space can truncate bitset_size, causing clean_bits, sync_bits, and recovering_bits to be...

OESA-2026-2753 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: dm: fix a buffer overflow in ioctl processing Tony Asleson using Claude found a buffer overflow in dm-ioctl in the function retrievestatus: 1. The code in...

PT-2026-51955

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the dm-cache component where the dirty mapping check for passthrough mode is performed during table creation. This design assumes that table reload occurs after...

PT-2026-51956

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description In passthrough mode, the invalidate mapping operation within the dm cache policy smq is called simultaneously by multiple workers without proper lock protection. This lack of...

PT-2026-51958

Name of the Vulnerable Software and Affected Versions Linux kernel version 6.19.0-rc7 Description In passthrough mode, a null pointer dereference occurs when dm-cache attempts to invalidate a cache entry while a concurrent write to the same cached block causes the bio prison cell lock to fail. In...

PT-2026-51953

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An integer overflow exists in the device-mapper log dm log component. The region count local variable in the create log context function is declared as a 32-bit unsigned integer, while t...

SUSE CVE-2026-46327

In the Linux kernel, the following vulnerability has been resolved: dm: fix unlocked test for dmsuspendedmd The function dmblkreportzones tests if the device is suspended with the "dmsuspendedmd" call. However, this function is called without holding any locks, so the device may be suspended just...

CVE-2026-46327

A flaw was found in the Linux kernel's device mapper dm component. The dmblkreportzones function performs a check for the device's suspended state without proper locking. This allows the device to enter a suspended state immediately after the check, leading to an inconsistent state. This...

UBUNTU-CVE-2026-46327

In the Linux kernel, the following vulnerability has been resolved: dm: fix unlocked test for dmsuspendedmd The function dmblkreportzones tests if the device is suspended with the "dmsuspendedmd" call. However, this function is called without holding any locks, so the device may be suspended just...

CVE-2026-46327

In the Linux kernel, the following vulnerability has been resolved: dm: fix unlocked test for dmsuspendedmd The function dmblkreportzones tests if the device is suspended with the "dmsuspendedmd" call. However, this function is called without holding any locks, so the device may be suspended just...

EUVD-2026-35428

In the Linux kernel, the following vulnerability has been resolved: dm: fix unlocked test for dmsuspendedmd The function dmblkreportzones tests if the device is suspended with the "dmsuspendedmd" call. However, this function is called without holding any locks, so the device may be suspended just...