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 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: fixed a race condition in readextentbufferpages There are reports from tree-checker that detect corrupted nodes, without any obvious pattern—possibly due to an overwrite in memory. After some debugging, it turned out that...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: calling btrfsremovefreespacecachelocked on cache load failure Now that lockdep is kept enabled throughout our CI processes, I noticed the following stack trace in generic/475: ------------ Cut here --- WARNING: CPU: 1 PID:...

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 in Linux 5.10, Linux

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 5.10

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: fixed the re-dirty process of tree-log nodes There is a report of a transaction abort with the following script: !/bin/sh for d in sda sdb; do mkfs.btrfs -d single -m single -f /dev/$d done mount /dev/sda /mnt/test moun...

Astra Linux – Vulnerability in Linux, 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 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: scrub: Properly handles RST lookup errors. BUG When running btrfs/060 with the forced RST feature enabled, the following ASSERT within scrubreadendio might crash: ASSERTsectornr nrsectors; Previously, a tree dump from...

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 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 put operation on the...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fixed an issue where an incorrect return value was returned after changing a leaf in lookupextentdataref. After the commit 1618aa3c2e01 “btrfs: simplified return variables in lookupextentdataref“”, the err and ret variable...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: The release path was called before initializing the extent tree in btrfsreadlocked inode. In btrfsreadlocked inode, we call btrfsinitfileextenttree while holding a lock on a read-locked leaf of the subvolume tree...

Astra Linux – Vulnerability in Linux

A race condition was discovered in the getoldroot function in fs/btrfs/ctree.c within the Linux kernel, as of version 5.11.8. This issue allows attackers to cause a denial of service attack due to a lack of locking on an extent buffer before a cloning operation, identified as CID-dbcc7d57bffc...

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...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-021575)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021575 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: check folio mapping after unlock in relocateonefolio When we call btrfsreadfolio to bring ...

Ubuntu 14.04 LTS / 16.04 LTS : Linux kernel vulnerabilities (USN-8274-1)

The remote Ubuntu 14.04 LTS / 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8274-1 advisory. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-021638)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021638 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: fix use-after-free when COWing tree bock and tracing is enabled When a COWing a tree block...

Linux Distros Unpatched Vulnerability : CVE-2026-43358

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - btrfs: add missing RCU unlock in error path in tryreleasesubpageextentbuffer Call rcureadlock before exiting the loop in tryreleasesubpageextentbuffer because...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-021639)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021639 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: don't BUGON when 0 reference count at btrfslookupextentinfo Instead of doing a BUGON handl...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-021580)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021580 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: don't BUGON on ENOMEM from btrfslookupextentinfo in walkdownproc We handle errors here...