PT-2025-14317 · Linux+7 · Linux Kernel+7

Published 2025-02-21 · Updated 2026-04-20 · CVE-2025-21936

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Description A null pointer dereference issue has been resolved in the Linux kernel. The problem occurred due to a lack of check for the return value of mgmt alloc skb() in mgmt device connected(). This issue is related to Bluetooth functionality.

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

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2025-12647

ALT-PU-2025-5786

AZL-59876

BDU:2025-04645

CVE-2025-21936

DLA-4193-1

DSA-5900-1

ECHO-69E7-F55C-D0A2

OESA-2025-1869

OESA-2025-1874

OPENSUSE-SU-2025_01614-1

OPENSUSE-SU-2025_01707-1

SUSE-SU-2025:01614-1

SUSE-SU-2025:01707-1

SUSE-SU-2025:01919-1

SUSE-SU-2025:01951-1

SUSE-SU-2025:01964-1

SUSE-SU-2025:01967-1

SUSE-SU-2025:20192-1

SUSE-SU-2025:20206-1

SUSE-SU-2025:20270-1

SUSE-SU-2025:20283-1

SUSE-SU-2025_01614-1

SUSE-SU-2025_01707-1

SUSE-SU-2025_01951-1

SUSE-SU-2025_01964-1

SUSE-SU-2025_01967-1

USN-7605-1

USN-7605-2

USN-7606-1

USN-7628-1

USN-7764-1

USN-7764-2

USN-7765-1

USN-7766-1

USN-7767-1

USN-7767-2

USN-7779-1

USN-7790-1

USN-7800-1

USN-7801-1

USN-7801-2

USN-7801-3

USN-7802-1

USN-7809-1

Affected Products

Alt Linux

Astra Linux

Debian

Linuxmint

Linux Kernel

Red Os

Suse

Ubuntu

References · 1799

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21936.json · Exploit
• https://git.kernel.org/stable/c/dc516e66fb28c61b248b393e2ddd63bd7f104969 · Patch
• https://osv.dev/vulnerability/USN-7764-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37798 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-38279 · Security Note
• https://ubuntu.com/security/CVE-2025-21978 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7800-1 · Vendor Advisory
• https://git.kernel.org/stable/c/7d39387886ffe220323cbed5c155233c3276926b · Patch
• https://ubuntu.com/security/notices/USN-7764-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21977 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21989 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-58090 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37997 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se18-bulletin-2025-0811SE18 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22060 · Vendor Advisory