Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from a post-release reuse issue in dmthin in dmsmregisterthresholdcallback...

The vulnerability of the dm thin kernel component in the Linux operating system, which allows a hacker to cause a service failure

The vulnerability of the dm thin kernel component in the Linux operating system is related to memory reading beyond the allocated buffer in the getfirstthin function in drivers/md/dm-thin.c. Exploiting this vulnerability can allow an attacker to cause a service failure...

CVE-2025-21664

In the Linux kernel, the following vulnerability has been resolved: dm thin: make getfirstthin use rcu-safe list first function The documentation in rculist.h explains the absence of listemptyrcu and cautions programmers against relying on a listempty - listfirst sequence in RCU safe code. This i...

CVE-2025-21664 dm thin: make get_first_thin use rcu-safe list first function

In the Linux kernel, the following vulnerability has been resolved: dm thin: make getfirstthin use rcu-safe list first function The documentation in rculist.h explains the absence of listemptyrcu and cautions programmers against relying on a listempty - listfirst sequence in RCU safe code. This i...

CVE-2025-21664

CVE-2025-21664 affects the Linux kernel dm-thin component. Root cause: get_first_thin did a non-RCU-safe sequence (list_empty -> list_first) that could race with concurrent updates, risking dereferencing a stale/altered list head during process_deferred_bios flow and leading to a crash. Connec...

CVE-2025-21664 dm thin: make get_first_thin use rcu-safe list first function

In the Linux kernel, the following vulnerability has been resolved: dm thin: make getfirstthin use rcu-safe list first function The documentation in rculist.h explains the absence of listemptyrcu and cautions programmers against relying on a listempty - listfirst sequence in RCU safe code. This i...

CVE-2025-21664

In the Linux kernel, the following vulnerability has been resolved: dm thin: make getfirstthin use rcu-safe list first function The documentation in rculist.h explains the absence of listemptyrcu and cautions programmers against relying on a listempty - listfirst sequence in RCU safe code. This i...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the getfirstthin function in the dm thin module not properly using RCU-safe list operations. This could resu...

CVE-2021-47343

In the Linux kernel, the following vulnerability has been resolved: dm btree remove: assign newroot only when removal succeeds removeraw in dmbtreeremove may fail due to IO read error e.g. read the content of origin block fails during shadowing, and the value of shadowspine::root is uninitialized...

CVE-2021-47343

In the Linux kernel, the following vulnerability has been resolved: dm btree remove: assign newroot only when removal succeeds removeraw in dmbtreeremove may fail due to IO read error e.g. read the content of origin block fails during shadowing, and the value of shadowspine::root is uninitialized...

CVE-2021-47343

In the Linux kernel, the following vulnerability has been resolved: dm btree remove: assign newroot only when removal succeeds removeraw in dmbtreeremove may fail due to IO read error e.g. read the content of origin block fails during shadowing, and the value of shadowspine::root is uninitialized...

CVE-2021-47343 dm btree remove: assign new_root only when removal succeeds

In the Linux kernel, the following vulnerability has been resolved: dm btree remove: assign newroot only when removal succeeds removeraw in dmbtreeremove may fail due to IO read error e.g. read the content of origin block fails during shadowing, and the value of shadowspine::root is uninitialized...

CVE-2021-47343

CVE-2021-47343 concerns the Linux kernel dm_btree_remove path (drivers/md/persistent-data/dm-btree-remove.c). In remove_raw(), IO read errors can leave shadow_spine.root uninitialized and still be assigned to new_root at function end, and for dm-thin, pmd->details_root/details_root can become ...

kernel: dm thin: Fix ABBA deadlock between shrink_slab and dm_pool_abort_metadata

An ABBA deadlock flaw was found in the Linux kernel's device-mapper thin provisioning subsystem between the memory reclaim path and metadata abort handling. A local user can trigger this issue by initiating cache drop operations while dm-thin operations are active, causing process P1 to hold...

GSD-2023-1001289 dm thin: Fix ABBA deadlock between shrink_slab and dm_pool_abort_metadata

dm thin: Fix ABBA deadlock between shrinkslab and dmpoolabortmetadata This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.163 by commit...

GSD-2023-1000486 dm thin: Fix ABBA deadlock between shrink_slab and dm_pool_abort_metadata

dm thin: Fix ABBA deadlock between shrinkslab and dmpoolabortmetadata This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v6.0.18 by commit...

GSD-2023-1000485 dm thin: Use last transaction's pmd->root when commit failed

dm thin: Use last transaction's pmd-root when commit failed This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v6.0.18 by commit...

PT-2023-33563 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v6.0.18 Description: The issue is related to a potential deadlock between shrink slab and dm pool abort metadata in the dm thin component. The actual impact and attack plausibility have not yet been proven...

kernel: dm thin: fix use-after-free crash in dm_sm_register_threshold_callback

In the Linux kernel, the following vulnerability has been resolved: dm thin: fix use-after-free crash in dmsmregisterthresholdcallback Fault inject on pool metadata device reports: BUG: KASAN: use-after-free in dmpoolregistermetadatathreshold+0x40/0x80 Read of size 8 at addr ffff8881b9d50068 by...

GSD-2022-1005995 dm thin: fix use-after-free crash in dm_sm_register_threshold_callback

dm thin: fix use-after-free crash in dmsmregisterthresholdcallback This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.211 by commit...