PT-2025-8812 · Linux+9 · Linux Kernel+9

Published 2025-01-07 · Updated 2026-04-20 · CVE-2025-21729

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 race condition exists between cancel hw scan and hw scan completion in the Linux kernel's wifi module, rtw89. The rtwdev->scanning flag is not protected by a mutex, allowing cancel hw scan to access the flag while hw scan completion unsets it, leading to a null-ptr-deref and use-after-free. This issue is resolved by moving the check condition to a location protected by a mutex.

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

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALSA-2025:20518

ALT-PU-2025-12647

BDU:2025-04370

CVE-2025-21729

ECHO-494D-1D5E-A2B3

INFSA-2025_20518

OESA-2025-1285

OESA-2025-1286

OPENSUSE-SU-2025_01614-1

OPENSUSE-SU-2025_01707-1

RHSA-2025:20518

RHSA-2025_20518

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-7889-1

USN-7889-2

USN-7889-3

USN-7889-4

USN-7889-5

USN-7889-6

USN-7889-7

USN-7935-1

USN-7940-1

USN-7940-2

Affected Products

Alt Linux

Almalinux

Astra Linux

Debian

Linuxmint

Linux Kernel

Red Hat

Rocky Linux

Suse

Ubuntu

References · 1920

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21729.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2024-53181 · Security Note
• https://ubuntu.com/security/notices/USN-7889-3 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-23138 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-56593 · Security Note
• https://ubuntu.com/security/CVE-2025-22042 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:01964-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38118 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-56651 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2404-CVE-2025-21729 · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2025:20518 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-21814 · Security Note
• https://ubuntu.com/security/CVE-2025-22035 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-21729 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2025-20530.html · Vendor Advisory