PT-2025-37536 · Linux+1 · Linux Kernel+1

Published 2023-04-11 · Updated 2025-09-17 · CVE-2023-53172

Positive Technologies (AI Summary)

CVSS v2.0

6.0

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A flaw exists in the Linux kernel related to the fsverity functionality. A change introduced by commit 56124d6c87fd, intended to support enabling fsverity with smaller tree block sizes, inadvertently made a warning condition reachable through fuzz testing. Specifically, calling FS IOC ENABLE VERITY on a file descriptor opened with ioctl-only access (mode 3) triggers this issue. The documentation for FS IOC ENABLE VERITY specifies that it requires O RDONLY access.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Weakness Enumeration

CWE-456

Related Identifiers

BDU:2026-05990

CVE-2023-53172

Affected Products

Astra Linux

Linux Kernel

References · 16

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53172.json · Exploit
• https://git.kernel.org/stable/c/85c039cff3c359967cafe90443c02321e950b216 · Patch
• https://git.kernel.org/stable/c/04839139213cf60d4c5fc792214a08830e294ff8 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53172 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53172 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-53172 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2023-53172 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53172 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-05990 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53172 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53172 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-53172 · Vendor Advisory
• https://git.kernel.org/linus/04839139213cf60d4c5fc792214a08830e294ff8 · Note
• https://twitter.com/CVEnew/status/1967597798658027996 · Twitter Post
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note