PT-2025-8861 · Linux+7 · Linux Kernel+7

Syzbot · Published 2025-02-03 · Updated 2026-04-20 · CVE-2025-21749

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 issue in the Linux kernel has been identified where the rose bind() function fails to lock the socket, potentially leading to a soft lockup in rose loopback timer() when bind() is called from multiple threads. This issue was reported by syzbot.

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

Exploit

Improper Locking

Weakness Enumeration

CWE-667

Related Identifiers

ALT-PU-2025-12647

AZL-57826

BDU:2025-12266

CVE-2025-21749

DLA-4102-1

DLA-4178-1

OESA-2025-1446

OESA-2025-1450

OPENSUSE-SU-2025_1177-1

OPENSUSE-SU-2025_1178-1

OPENSUSE-SU-2025_1180-1

SUSE-SU-2025:01919-1

SUSE-SU-2025:1177-1

SUSE-SU-2025:1178-1

SUSE-SU-2025:1180-1

SUSE-SU-2025:20190-1

SUSE-SU-2025:20192-1

SUSE-SU-2025:20260-1

SUSE-SU-2025:20270-1

SUSE-SU-2025_1177-1

SUSE-SU-2025_1178-1

SUSE-SU-2025_1180-1

USN-7510-1

USN-7510-2

USN-7510-3

USN-7510-4

USN-7510-5

USN-7510-6

USN-7510-7

USN-7510-8

USN-7511-1

USN-7511-2

USN-7511-3

USN-7512-1

USN-7516-1

USN-7516-2

USN-7516-3

USN-7516-4

USN-7516-5

USN-7516-6

USN-7516-7

USN-7516-8

USN-7516-9

USN-7517-1

USN-7517-2

USN-7517-3

USN-7518-1

USN-7521-1

USN-7521-2

USN-7521-3

USN-7539-1

USN-7540-1

USN-7593-1

USN-7602-1

USN-7640-1

USN-7651-1

USN-7651-2

USN-7651-3

USN-7651-4

USN-7651-5

USN-7651-6

USN-7652-1

USN-7653-1

USN-7737-1

Affected Products

Alt Linux

Astra Linux

Debian

Linuxmint

Linux Kernel

Red Os

Suse

Ubuntu

References · 2165

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21749.json · Exploit
• https://osv.dev/vulnerability/AZL-57826 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-57997 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-57922 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-50008 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7651-6 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-47756 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-53145 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-57807 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-21780 · Security Note
• https://ubuntu.com/security/CVE-2025-21871 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-37798 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-47211 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7516-5 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-49924 · Vendor Advisory