19 matches found
Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1
In the Linux kernel, the following vulnerability has been resolved: dm thin: Make getfirstthin use listfirstornullrcu instead of rcu-safe list first function. The documentation in rculist.h explains the absence of listemptyrcu and warns programmers against relying on a sequence of listempty -...
Cloudflare Fixes Flaw That Let One Container Read Another Customer's Leftover Disk Data
A flaw in Cloudflare Containers let a paying customer read data that other customers' containers had left behind on the same server, Cloudflare and the researchers who found it said on Thursday. The data came from disk space that earlier containers had used and given up, not from any live workloa...
CVE-2026-72108
A flaw was found in the Linux kernel's device-mapper dm thin metadata component. When operations involving metadata snapshots, such as reserving or releasing a snapshot, encounter a commit failure, the system can write an inconsistent 'heldroot' to disk. This can lead to metadata corruption withi...
UBUNTU-CVE-2026-72108
In the Linux kernel, the following vulnerability has been resolved: dm thin metadata: fix metadata snapshot consistency on commit failure reservemetadatasnap and releasemetadatasnap modify the superblock's heldroot directly in the blockmanager's buffer. If the subsequent metadata commit fails, th...
CVE-2026-72108 dm thin metadata: fix metadata snapshot consistency on commit failure
In the Linux kernel, the following vulnerability has been resolved: dm thin metadata: fix metadata snapshot consistency on commit failure reservemetadatasnap and releasemetadatasnap modify the superblock's heldroot directly in the blockmanager's buffer. If the subsequent metadata commit fails, th...
EUVD-2026-59066
In the Linux kernel, the following vulnerability has been resolved: dm thin metadata: fix metadata snapshot consistency on commit failure reservemetadatasnap and releasemetadatasnap modify the superblock's heldroot directly in the blockmanager's buffer. If the subsequent metadata commit fails, th...
CVE-2026-72108 dm thin metadata: fix metadata snapshot consistency on commit failure
In the Linux kernel, the following vulnerability has been resolved: dm thin metadata: fix metadata snapshot consistency on commit failure reservemetadatasnap and releasemetadatasnap modify the superblock's heldroot directly in the blockmanager's buffer. If the subsequent metadata commit fails, th...
SUSE CVE-2026-46107
In the Linux kernel, the following vulnerability has been resolved: dm-thin: fix metadata refcount underflow There's a bug in dm-thin in the function rebalancechildren. If the internal btree node has one entry, the code tries to copy all btree entries from the node's child to the node itself and...
CVE-2026-46107
A flaw was found in the Linux kernel's Device Mapper dm-thin component. This vulnerability, a metadata reference count underflow, occurs in the rebalancechildren function. When an internal btree node with a single entry is shared, the system incorrectly tracks the usage of child nodes. This can...
CVE-2022-50549 dm thin: Fix ABBA deadlock between shrink_slab and dm_pool_abort_metadata
In the Linux kernel, the following vulnerability has been resolved: dm thin: Fix ABBA deadlock between shrinkslab and dmpoolabortmetadata Following concurrent processes: P1drop cache P2kworker dropcachessysctlhandler dropslab shrinkslab downread&shrinkerrwsem - LOCK A doshrinkslab supercachescan...
SUSE 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...
DEBIAN-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...
UBUNTU-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...
kernel: dm thin: Use last transaction's pmd->root when commit failed
A metadata handling flaw was found in the Linux kernel device-mapper thin provisioning driver. After a failed metadata commit, the in-memory root pointer could reference a mixed set of fresh and stale tree nodes. Subsequent lookups may loop or stall. A local user could use this flaw to cause the...
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...
kernel: dm thin: Use last transaction's pmd->root when commit failed
A metadata handling flaw was found in the Linux kernel device-mapper thin provisioning driver. After a failed metadata commit, the in-memory root pointer could reference a mixed set of fresh and stale tree nodes. Subsequent lookups may loop or stall. A local user could use this flaw to cause the...
Troubleshooting common issues with XenServer clustered pools and GFS2 SRs
XenServer uses GFS2 to make thin provisioning available by using block-based storage devices that are accessed through iSCSI software initiator or Hardware HBA. This article provides a guide for troubleshooting common issues when GFS2 SRThin Provisioning is being used in XenServer or Citrix...
Troubleshooting thin provisioning for shared block storage on XenServer
XenServer and Citrix Hypervisor use GFS2 to provide the ability to set up thin provisioning with a shared block storage device. Pools that use GFS2 to thin provision their shared block storage are clustered and behave differently to pools that use shared file-based storage or LVM with shared bloc...