PT-2025-14304 · Linux+6 · Linux Kernel+6

Published 2025-02-27 · Updated 2026-01-20 · CVE-2025-21923

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 use-after-free issue occurs when a hid-steam device is removed, potentially leading to scheduling deferred work to reattach the input device. The cleanup process cancels the deferred work, but this was done before the client hdev itself is cleaned up, allowing it to get rescheduled. This issue has been resolved with a patch that fixes the ordering to properly cancel the deferred work.

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

ALT-PU-2025-5786

AZL-59940

BDU:2025-05643

CVE-2025-21923

OESA-2025-1446

OESA-2025-1450

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

Affected Products

Alt Linux

Astra Linux

Linuxmint

Linux Kernel

Red Os

Suse

Ubuntu

References · 1887

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21923.json · Exploit
• https://ubuntu.com/security/CVE-2025-39688 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21939 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22045 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21980 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-22056 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21911 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-58076 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-56576 · Security Note
• https://ubuntu.com/security/CVE-2025-21950 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-21994 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-58017 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:01951-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-21963 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:01919-1 · Vendor Advisory