PT-2025-11015 · Linux+10 · Linux Kernel+10

Syzbot · Published 2025-01-29 · Updated 2026-05-26 · CVE-2025-21853

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 vulnerability in the Linux kernel has been resolved, related to the handling of freeze mutex during memory mapping BPF map contents with writable permissions. The issue could potentially lead to deadlocks. The resolution involves holding freeze mutex only during writeability checks and bumping the "write active" count for the map, then unlocking the mutex and proceeding with mmap logic.

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

Exploit

Weakness Enumeration

CWE-833

Related Identifiers

ALSA-2025:20095

ALSA-2025:20518

ALT-PU-2025-12647

ALT-PU-2025-4807

AZL-58487

AZL-58536

BDU:2025-12347

CVE-2025-21853

DLA-4178-1

DLA-4193-1

DSA-5907-1

ECHO-0533-4032-AFFF

INFSA-2025_20518

MGASA-2025-0111

MGASA-2025-0112

OESA-2025-1339

OESA-2025-1340

OPENSUSE-SU-2025_01614-1

OPENSUSE-SU-2025_01707-1

RHSA-2025:20095

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-2025:01972-1

SUSE-SU-2025:20343-1

SUSE-SU-2025:20344-1

SUSE-SU-2025:20354-1

SUSE-SU-2025:20355-1

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

SUSE-SU-2025_01972-1

USN-7521-1

USN-7521-2

USN-7521-3

USN-7654-1

USN-7654-2

USN-7654-3

USN-7654-4

USN-7654-5

USN-7655-1

USN-7686-1

USN-7703-1

USN-7703-2

USN-7703-3

USN-7703-4

USN-7711-1

USN-7712-1

USN-7712-2

USN-7719-1

USN-7737-1

Affected Products

Alt Linux

Almalinux

Astra Linux

Debian

Linuxmint

Linux Kernel

Red Hat

Red Os

Rocky Linux

Suse

Ubuntu

References · 2304

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21853.json · Exploit
• https://ubuntu.com/security/CVE-2024-38541 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2025-20530.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21793 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-58053 · Security Note
• https://ubuntu.com/security/CVE-2025-38083 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2025-0112 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-23157 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21707 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-46751 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21867 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7655-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21783 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-58007 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21938 · Vendor Advisory