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 5.10

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: A memory leak has been fixed in add inoderef. Line 1169 3 allocates a memory chunk for victimname using kmalloc. However, when the function returns at line 1184 4, the memory allocated by line 1169 3 is not freed, leadi...

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 – 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 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 5.15

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: Skipping the “reserved bytes” warning after unmounting after a log cleanup failure. After the recent changes made by commit c2e39305299f01 “btrfs: clearing the extent buffer when writing fails” and its follow-up fix,...

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 – 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 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: 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 found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: Rejects invalid reloc tree root keys with stack dump. BUG Syzbot reported a crash that an ASSERT was triggered inside preparetomerge. This ASSERT ensures that the reloc tree is properly pointed back by its subvolume tree...

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

In the Linux kernel, the following vulnerability has been resolved: btrfs: Additional debug information will be output if an inline backref cannot be found. BUG Syzbot reported several warnings that were triggered within the function lookupInlineExtentBackref. CAUSE As usual, the reproducer of th...

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 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...

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

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 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 found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: Do not clean up the repair bio if submission fails. The submission helper always runs bioendio on the bio if submission fails. Therefore, cleaning up the bio only leads to various use-after-free errors and NULL pointer...

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 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...