PT-2025-38556 · Linux+9 · Linux Kernel+9

Published 2025-08-29 · Updated 2026-05-07 · CVE-2025-39849

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description A flaw exists in the Linux kernel’s wifi subsystem related to SSID length handling within the cfg80211 connect result() function. Specifically, insufficient bounds checking on the ssid->datalen variable, when it exceeds the maximum allowed SSID length (IEEE80211 MAX SSID LEN, which is 32 bytes), can lead to memory corruption.

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

Exploit

Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-119

CWE-787

Related Identifiers

ALSA-2025:18281

ALSA-2025:19102

ALSA-2025:19103

AZL-67520

BDU:2025-13881

CESA-2025_19102

CESA-2025_19103

CVE-2025-39849

DLA-4328-1

DSA-6008-1

DSA-6009-1

ECHO-83E8-6747-3085

INFESA-2025_0006

INFSA-2025_18281

INFSA-2025_19102

INFSA-2025_19103

INFSA-2025_21112

OPENSUSE-SU-2025:20081-1

RHSA-2025:18281

RHSA-2025:19102

RHSA-2025:19103

RHSA-2025:19106

RHSA-2025:21112

RHSA-2025:21118

RHSA-2025_18281

RHSA-2025_19102

RHSA-2025_19103

RHSA-2025_21112

SUSE-SU-2025:03600-1

SUSE-SU-2025:03634-1

SUSE-SU-2025:20851-1

SUSE-SU-2025:20861-1

SUSE-SU-2025:20870-1

SUSE-SU-2025:20898-1

SUSE-SU-2025:21074-1

SUSE-SU-2025:21139-1

SUSE-SU-2025:21179-1

SUSE-SU-2025:3751-1

SUSE-SU-2025:4057-1

SUSE-SU-2025:4132-1

SUSE-SU-2025:4141-1

USN-8095-1

USN-8095-2

USN-8095-3

USN-8095-4

USN-8095-5

USN-8100-1

USN-8125-1

USN-8126-1

USN-8165-1

USN-8261-1

Affected Products

Almalinux

Astra Linux

Centos

Debian

Linuxmint

Linux Kernel

Red Hat

Rocky Linux

Suse

Ubuntu

References · 3549

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39849.json · Exploit
• https://ubuntu.com/security/CVE-2025-68237 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38279 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22125 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39746 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38439 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39675 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2025-1202SE17 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40323 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38169 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38068 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37819 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37740 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-71111 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39772 · Vendor Advisory