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: Quota: Fixed a warning in dqgrab. The following issue occurs during fault injection: WARNING: CPU: 1 PID: 14870 at include/linux/quotaops.h:51 dquotdisable+0x13b7/0x18c0 Modules linked in: CPU: 1 PID: 14870 Comm: fsconfig Not...

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

In the Linux kernel, the following vulnerability has been resolved: fs: Protect reconfiguration of sb read-write from racing writes The code responsible for reconfiguration and remounting the filesystem requires significant effort to protect it from racing writes during operations where the...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: f2fs: fixed to avoid NULL pointer dereferencing in f2fscheckquotaconsistency. The syzbot reported the following f2fs bug: Oops: gen 107.736417T5848. Oops: general protection fault, likely due to a non-canonical address...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: nilfs2: Fixing the use-after-free bug of nswriter when remounting the filesystem. If a nilfs2 filesystem is downgraded to read-only due to metadata corruption on the disk, and it is remounted with read/write access, or if an...

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

In the Linux kernel, the following vulnerability has been resolved: efivarfs: Force RO when remounting if SetVariable is not supported If SetVariable at runtime is not supported by the firmware, we never assign a callback for that function. At the same time, we mount efivarfs as RO so that no one...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: f2fs: fixed to avoid a use-after-free in f2fsstopgcthread. The syzbot reports a f2fs bug as follows: dumpstack lib/dumpstack.c:88 inline dumpstacklvl+0x241/0x360 lib/dumpstack.c:114 printreport+0xe8/0x550 mm/kasan/report.c:491...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: In ext4, the work related to queued discard operations is always drained in ext4mbrelease. While reviewing the recent ext4 patch1, Sashiko raised the following concern2: If the file system is initially mounted with the discard...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ext4: Fix for a possible UAF Use-after-Write issue when remounting a read-only mmp-protected file system. After committing the change 618f003199c6 “ext4: Fix memory leak in ext4fillsuper”, there is a race condition where the kmmp...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ext4: Do not set SBRDONLY after filesystem errors When the filesystem is mounted with errors=remount-ro, we previously set the SBRDONLY flag to prevent any further modifications to the filesystem. We knew that this approach misse...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: tracefs: Resets permissions on files when they are remounted, if the permissions are specified as options. There is an inconsistency in how permissions are handled in tracefs. Since permissions are generated upon access, they...

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

In the Linux kernel, the following vulnerabilities have been resolved: fs/jfs: prevented double-free in dbUnmount after failed jfsremount Syzkaller reported the following issue: ================================================================== BUG: KASAN: double-free in slabfree mm/slub.c:3787...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: f2fs: Fix to correctly check the readonly condition. In the following case, it is possible to mount a multi-device image with the rw option. However, if one of the secondary devices is set as ro, subsequent updates will cause a...

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

A use-after-free flaw was discovered in the ext4remount function in the fs/ext4/super.c file within ext4 in the Linux kernel. This flaw allows a local user to cause an information leak issue when freeing the old quota file names before a potential failure, resulting in a use-after-free condition...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-021583)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021583 advisory. In the Linux kernel, the following vulnerability has been resolved: ext4: don't set SBRDONLY after filesystem errors When the filesystem is mounted with...

RUSTSEC-2026-0147 Read-only volume remount bypass via guest CAP_SYS_ADMIN

Affected versions of boxlite mount host directories shared via virtiofs as guest-side read-only by setting MSRDONLY from the guest. Because the default guest capability set included CAPSYSADMIN, untrusted code running inside a sandbox could execute mount -o remount,rw to re-flag the share as...

Improper Isolation or Compartmentalization

Overview @boxlite-ai/boxlite is a BoxLite - Embeddable micro-VM runtime for secure, isolated code execution Affected versions of this package are vulnerable to Improper Isolation or Compartmentalization in the mounting of host directories in read-only mode into VM. An attacker can gain unauthoriz...

PT-2026-42209

Name of the Vulnerable Software and Affected Versions Boxlite versions prior to 0.9.0 Description Boxlite is a sandbox service that allows users to create lightweight virtual machines and launch OCI containers to run untrusted code. The software fails to properly enforce read-only mounts for host...

Improper Isolation or Compartmentalization

Overview boxlite is a Python bindings for Boxlite runtime Affected versions of this package are vulnerable to Improper Isolation or Compartmentalization in the mounting of host directories in read-only mode into VM. An attacker can gain unauthorized write access to the host filesystem by remounti...

CVE-2026-43065

A flaw was found in the ext4 filesystem within the Linux kernel. When an ext4 filesystem is initially mounted with the 'discard' option and then remounted with 'nodiscard', pending discard operations may not be properly cancelled or flushed. This can lead to unhandled resource operations if the...

SUSE CVE-2026-43065

In the Linux kernel, the following vulnerability has been resolved: ext4: always drain queued discard work in ext4mbrelease While reviewing recent ext4 patch1, Sashiko raised the following concern2: If the filesystem is initially mounted with the discard option, deleting files will populate...