Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Ensure that pages are unlocked in case of a failure in cowfilerange. There is a hangtask report for zoned btrfs as follows: https://github.com/naota/linux/issues/59 726.328648 INFO: Task rocksdb:high0:11085 blocked for...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fixed a race condition between balance operations and cancel/pause requests. Syzbot reported a panic that occurred as follows: Assertion failed: fsinfo-exclusiveoperation == BTRFSEXCLOPBALANCEPAUSED, in fs/btrfs/ioctl.c:46...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: fixed a transaction abort during file creation due to name hash collisions. If we attempt to create several files with names that result in the same hash, we must package them in the same directory item, and there is a...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: In the send operation, it is necessary to check for inline extents within the rangeisholeinparent function. Before accessing the diskbytenr field of a file extent item, we need to check whether we are dealing with an inlin...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: Aborting transactions when an unexpected extent buffer generation occurs at btrfscopyroot. If we detect an unexpected generation of the extent buffer during the cloning process at btrfscopyroot, we simply call WARNON inste...

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: ref-verify: Fix for a use-after-free after an invalid ref action. After calling btrfsreftreemod, if we successfully insert the new ref entry local variable 'ref' into the respective block entry’s rbtree local variable 'be,...

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

In the Linux kernel, the following vulnerability has been resolved: btrfs: Do not call BUGON when the reference count is 0 at btrfslookupextentinfo. Instead of calling BUGON, handle the error by returning -EUCLEAN, aborting the transaction, and logging an error message...

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: The release path is checked before inode lookup during the ino lookup ioctl operation. During the ino lookup ioctl operation, we may call btrfsiget to obtain an inode reference while we are holding onto the root’s btree...

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: fixed the BUGON condition in btrfscancelbalance. Pausing and canceling balance can race to interrupt balance, leading to a BUGON panic in btrfscancelbalance. The BUGON condition in btrfs CancelBalance does not take this ra...

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 in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: fixed issues with space cache corruption and potential double allocations. When testing spacecache v2 on a large set of machines, we encountered a few issues: 1. Errors of the type “unable to add free space :-17” EEXIST...

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: In the “send” operation, there is a issue with handling path ref underflow during the header iterate inoderef function. Change BUGON to proper error handling if building the path buffer fails. The pointers are not...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fixed a leak of kobject names for the sub-group spaceinfo. When the createspaceinfosubgroup function allocates elements of spaceinfo-subgroup, the kobjectinitandadd function is called for each element via...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: A possible memory leak has been fixed in btrfsgetdevargsfrompath. In btrfsgetdevargsfrompath, btrfsgetbdevandsb may fail if the path is invalid. In such cases, btrfsgetdevargsfrompath returns directly without freeing the...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: fixed the issue of resolving backrefs for inline extents followed by prealloc extents. If a file consists of an inline extent followed by a regular or prealloc extent, then a legitimate attempt to resolve a logical...

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 found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: Do not drop the extentmap for free space inode on a write error. While running the CI for an unrelated change, I encountered the following panic: with generic/648 on btrfsholesspacecache. Assertion failed: blockstart !=...

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: fixed a warning that occurs when performing a transaction with qgroups enabled after an abort. If we encounter a transaction abort with qgroups enabled, a warning is triggered during the final operation of putting the...

Astra Linux – Vulnerability in Linux 5.15

The following vulnerability has been resolved in the Linux kernel: btrfs: fixed an issue with the tree mod log handling of reallocated nodes. We have observed the following panics in production: - Kernel bug at fs/btrfs/tree-mod-log.c:677! - Invalid opcode: 0000 1 SMP - RIP:...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: The BUG function call has been removed after failing to insert a delayed directory index entry. Instead of calling BUG when we fail to insert a delayed directory index entry into the delayed node’s tree, we can simply...