PT-2025-38024 · Linux+2 · Linux Kernel+2

Published 2023-03-24 · Updated 2025-09-17 · CVE-2023-53306

Positive Technologies (AI Summary)

CVSS v2.0

6.2

Medium

Base vector

AV:L/AC:L/Au:S/C:N/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.3.0-rc1

Description The Linux kernel contains a flaw in the fs/dax.c component related to copy-on-write (CoW) handling within the XFS filesystem. Specifically, the code fails to clear a dirty mark on an old, non-shared extent before invalidating inode pages, leading to a warning during operation. This can occur when CoW is enabled on non-shared extents to address fragmentation.

Recommendations Update to a newer kernel version that addresses this issue.

Exploit

Fix

Missing Release of Resource after Effective Lifetime

Improper Resource Release

Weakness Enumeration

CWE-772

CWE-459

CWE-404

CWE-771

Related Identifiers

BDU:2026-03314

CVE-2023-53306

Affected Products

Astra Linux

Linux Kernel

Xfs

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53306.json · Exploit
• https://git.kernel.org/stable/c/f76b3a32879de215ced3f8c754c4077b0c2f79e3 · Patch
• https://cve.org/CVERecord?id=CVE-2023-53306 · Security Note
• https://bdu.fstec.ru/vul/2026-03314 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2023-53306 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53306 · Vendor Advisory
• https://git.kernel.org/stable/c/fac05f800abb63dc4d7cc48fe7edf16e0520dc1f · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-53306 · Security Note
• https://osv.dev/vulnerability/CVE-2023-53306 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53306 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53306 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-53306 · Vendor Advisory
• https://twitter.com/CVEnew/status/1968190820118413441 · Twitter Post
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://git.kernel.org/linus/f76b3a32879de215ced3f8c754c4077b0c2f79e3 · Note