CVE-2026-46106

In the Linux kernel, the following vulnerability has been resolved: eventfs: Hold eventfsmutex and SRCU when remount walks events Commit 340f0c7067a9 "eventfs: Update all the eventfsinodes from the events descriptor" had eventfssetattrs recurse through ei-children on remount. The walk only holds...

CVE-2026-46106

CVE-2026-46106 concerns the Linux kernel eventfs remount race. The root cause is a race where eventfs_inodes are traversed while remounts are performed, due to mixing rcu_read_lock usage with SRCU and not holding eventfs_mutex during the critical walk. The fix (commit 340f0c7067a9) updates the ev...

CVE-2026-46106 eventfs: Hold eventfs_mutex and SRCU when remount walks events

In the Linux kernel, the following vulnerability has been resolved: eventfs: Hold eventfsmutex and SRCU when remount walks events Commit 340f0c7067a9 "eventfs: Update all the eventfsinodes from the events descriptor" had eventfssetattrs recurse through ei-children on remount. The walk only holds...

CVE-2026-46106 eventfs: Hold eventfs_mutex and SRCU when remount walks events

In the Linux kernel, the following vulnerability has been resolved: eventfs: Hold eventfsmutex and SRCU when remount walks events Commit 340f0c7067a9 "eventfs: Update all the eventfsinodes from the events descriptor" had eventfssetattrs recurse through ei-children on remount. The walk only holds...

PT-2026-44229

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the eventfs component where the system fails to properly hold the eventfs mutex and SRCU Sleepable Read-Copy Update during remount operations that walk events...

GHSA-G6WW-W5J2-R7X3 BoxLite: Permission Bypass Allows Modification of Read-Only Files

Summary Boxlite is a sandbox service that allows users to create lightweight virtual machines Boxes and launch OCI containers within them to run untrusted code. One of the core security features claimed by Boxlite is the ability to mount host directories in read-only mode readonly=True into the V...

BoxLite: Permission Bypass Allows Modification of Read-Only Files

Summary Boxlite is a sandbox service that allows users to create lightweight virtual machines Boxes and launch OCI containers within them to run untrusted code. One of the core security features claimed by Boxlite is the ability to mount host directories in read-only mode readonly=True into the V...

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 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 – 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 5.15

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 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 – 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...