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

In the Linux kernel, the following vulnerability has been resolved: btrfs: Proper handling of errors from btrfsdecref. In walkupproc, we have a BUGONret from btrfsdecref. This is incorrect; we have proper error handling here, and the error is returned...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fixed a race condition when deleting the quota root from the “dirtycowonlyroots” list. When disabling quotas, we delete the quota root from the fsinfo-dirtycowonlyroots list without locking it, which requires the protectio...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Fixed a use-after-free in btrfsencodedreadendio. Shinichiro reported the following use-after-free that sometimes occurs in our CI system when running fstests' btrfs/284 on a TCMU runner device: BUG: KASAN:...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fix for the iteration of extrefs during log replay. When calling inodeaddref and processing extrefs, if we jump to the next label, the value of victimname.len is undefined. This occurs because victimname.len wasn’t...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: Always detect conflicting inodes when logging inode refs After renaming an inode, either through the rename operation or through regular renames in multiple non-atomic steps, if two inodes exist and at least one of them is...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix use-after-free when attempting to join an aborted transaction When we are trying to join the current transaction and if it's aborted, we read its 'aborted' field after unlocking fsinfo-translock and without holding any...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: The page extent mapping was set after the readfolio operation in relocateonepage. One of the CI runs triggered the following panic: Assertion failed: PagePrivatepage && page-private, in fs/btrfs/subpage.c:229 ----------...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fixed a use-after-free after failing to create a snapshot. In ioctl.c’s createsnapshot function, we allocate a pending snapshot structure and then attach it to the transaction’s list of pending snapshots. After that, we ca...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: qgroup: Fixed a bug where sleep was performed from an invalid context in btrfsqgroupinherit. Syzkaller reported the bug as follows: Bug: A sleep function is called from an invalid context at include/linux/sched/mm.h:274 Ca...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: Reinitialize the delayed ref list after deleting it from the list. In the insertdelayedref function, if we need to update the action of an existing ref to BTRFSDROPDELAYEDREF, we delete the ref from its refhead’s refaddlis...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: Do not call BUGON when encountering ENOMEM during the dropping of file extent items within a given range. If -ENOMEM occurs while dropping file extent items within a specified range, at btrfsDropExtents, the transaction ma...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: added handling for RAID1C23/DUP to btrfsreduceallocprofile Callers of btrfsreduceallocprofile expect it to return exactly one allocation profile flag. If this is not done, it may ultimately result in a WARNON and remount-r...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: fixed an inode list leak during backref walking at resolveindirectrefs During backref walking, at resolveindirectrefs, if an error occurs, we jump to the ‘out’ label and call freeleaflist on the ‘parents’ ulist. This frees...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fixed an issue where inode lists were leaked during backref walking in findparentnodes. During backref walking, when findparentnodes is called, if we are dealing with a data extent and an error occurs while resolving...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fixed a deadlock between the quota disable process and the qgroup rescan worker process. The quota disable ioctl initiates a transaction before waiting for the qgroup rescan worker to complete. However, this wait can be...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Fixed a hang that occurred during unmount when the block group reclaim task was running. When starting an unmount, at closectree, if the reclaim task is running and is in the middle of a data block group relocation, it ...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Fixed leaks in the ulist structure during error paths in the qgroup self tests. In the testnosharedqgroup and testmultiplerefs qgroup self tests, if we fail to add the tree reference, remove the extent item, or remove t...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fixed the lockdep splat issue and potential deadlock that occurs after running delayed items. When running delayed items, we hold the mutex of the delayed node. Then, we attempt to modify a subvolume btree to insert, updat...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: corrected the order of the prelimref arguments in btrfsprelimref The btrfsprelimref function calls the old and new reference variables in the incorrect order. This causes a NULL pointer dereference because oldref is...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: A memory leak was fixed in btrfsdoencodedwrite. Local fuzzing of version 6.12.94 identified the following memory leak: - Unreferenced object 0xffff888018050a80 size 64: - comm "syz.0.17", pid 10297, jiffies 4294953601 -...