Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: BTRFS: Do not attempt to replace the rwsem on a task that already holds it. By running fstests btrfs/011 with MKFSOPTIONS="-O rst" to force the use of the RAID stripe-tree, we obtain the following error from lockdep: BTRFS inf...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: The free pages operation fails with an error in btrfsuringreadextent. In this function, the pages object is never freed, with the hope that it will be picked up by btrfsuringreadfinished whenever that function is executed ...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fix the race condition between the quota enable operation and the quota rescan ioctl call. When enabling quotas, in the btrfsquotaenable function, after committing the transaction, we update fsinfo-quotaroot to point to th...

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

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Do not abort the filesystem when attempting to take a snapshot of a deleted subvolume. If the source file descriptor for the snapshot ioctl refers to a deleted subvolume, the following abort occurs: BTRFS: Transaction...

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

In the Linux kernel, the following vulnerability has been resolved: btrfs: Do not ASSERT if the newly created subvolume has already been read. BUG There is a syzbot crash, triggered by the ASSERT during subvolume creation: Assertion failed: !anondev, in fs/btrfs/disk-io.c:1319 ----------- kernel...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: The BUGON functions in addnewfreespace have been removed. In addnewfreespace, there were these BUGON functions that were used to handle any failures in adding free space to the in-memory free space cache. Such failures...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: fixed a race condition between quota rescan and disabling quotas, which could lead to a NULL pointer derefrence. If one task attempts to start the quota rescan worker while another task attempts to disable quotas, we can e...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: Zoned – Initialize the zone info of the device for seeding. When performing seeding on a zoned filesystem, it is necessary to initialize the btrfszoneddeviceinfo structure of each zoned device. Otherwise, mounting the...

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

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Handled the chunk tree lookup error in btrfsrelocatesyschunks. The unhandled case in the btrfsrelocatesyschunks loop is a corruption. This can only occur under two impossible conditions: - First, the search key is set t...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Fixed a deadlock that occurred when cloning inline extents and using qgroups. There are a few exceptional cases where cloning an inline extent requires copying the inline extent data into a page of the destination inode...

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

In the Linux kernel, the following vulnerability has been resolved: btrfs: In the case of zoned filesystems, there’s a memory leak that occurs after finding a block group containing super blocks. In the excludesuperstripes function, if we encounter a block group that contains super blocks, and we...

Astra Linux – Vulnerability in Linux, Linux 5.10

A vulnerability was discovered in btrfsalloctreeb in fs/btrfs/extent-tree.c within the Linux kernel, due to an improper lock operation in btrfs. This flaw allows a user with local privileges to cause a denial of service DOS due to a deadlock issue...

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

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Do not free the qgroup space unless specified. Boris noticed during his simple quota testing that there was a leak caused by Sweet Tea’s change to the subvol create function, which would stop a transaction commit. This...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: Do not use btrfssetitemkeysafe on RAID stripe-extents. Do not use btrfssetitemkeysafe to modify the keys in the RAID stripe-tree, as this can lead to corruption of the tree, which is caught by the checks in...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: Do not erase the value of ret in btrfsvalidatesuper. Commit 2a9bb78cfd36 “btrfs: validate the system chunk array in btrfsvalidatesuper” introduces a call to validatesyschunkarray in btrfsvalidatesuper, which erases the val...

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

A use-after-free flaw was discovered in btrfssearchslot in fs/btrfs/ctree.c within btrfs in the Linux Kernel. This flaw allows an attacker to crash the system and potentially cause a kernel information leak...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: Always report an error in runonedelayedref. Currently, we have a btrfsdebug function for handling failures in runonedelayedref. However, if end users encounter such problems, there will be no chance that btrfsDebug is...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: added an missing RCU unlock in the error path in tryreleasesubpageextentbuffer. Call rcureadlock before exiting the loop in tryreleasesubpageextentbuffer, because there is a rcureadunlock call after the loop. This issue wa...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Do not use BUGON in linktofixupdir. During error injection testing, the following panic occurred: Kernel BUG at fs/btrfs/tree-log.c:1862! Invalid opcode: 0000 1 SMP NOPTI CPU: 1 PID: 7836 Comm: mount Not tainted...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: fixed a race condition when detecting delalloc ranges during fiemap For fiemap, we recently stopped locking the target extent range for the entire duration of the fiemap call, in order to avoid a deadlock in a scenario whe...