PT-2025-46754 · Linux+1 · Linux Kernel+1

Published 2025-10-13 · Updated 2026-03-14 · CVE-2025-40197

Positive Technologies (AI Summary)

CVSS v2.0

3.8

Low

Base vector

AV:L/AC:H/Au:S/C:N/I:N/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 device minor number handling. Specifically, the device minor number is cleared after the device is released, which is incorrect. This issue affects the media controller (mc) subsystem.

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

Exploit

Use of Uninitialized Resource

Weakness Enumeration

CWE-908

Related Identifiers

AZL-70103

BDU:2025-14576

CVE-2025-40197

DLA-4379-1

DLA-4404-1

OPENSUSE-SU-2025:20172-1

SUSE-SU-2026:20012-1

SUSE-SU-2026:20015-1

SUSE-SU-2026:20021-1

Affected Products

Debian

Linux Kernel

References · 263

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40197.json · Exploit
• https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:20021-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:20172-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-40197 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-13-CVE-2025-40197 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2025-28048.html · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-40197 · Security Note
• https://wiki.astralinux.ru/astra-linux-se38-bulletin-2026-0305SE38 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-40197 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-14576 · Security Note
• https://osv.dev/vulnerability/CVE-2025-40197 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-70103 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:20012-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2026-0518SE47 · Vendor Advisory