PT-2024-11210 · Linux+3 · Linux Kernel+3

Shuang Li · Published 2021-05-17 · Updated 2025-05-21 · CVE-2021-47163

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 crash could be triggered in the Linux kernel by repeating certain commands, specifically modprobe tipc, tipc bearer enable media udp, and rmmod tipc. This issue occurs when the TIPC module is removed, and the UDP tunnel sock is delayed to release in a work queue. The work queue function cleanup beareri() code no longer exists when trying to invoke it, leading to a kernel crash. The patch introduces a member wq count in tipc net to track the numbers of work queues in schedule and waits for all work queues to be done in tipc exit net().

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

BDU:2025-13705

CVE-2021-47163

OESA-2024-1483

OESA-2024-1484

OPENSUSE-SU-2025_01633-1

SUSE-SU-2024:4100-1

SUSE-SU-2025:0034-1

SUSE-SU-2025:01633-1

SUSE-SU-2025:1574-1

SUSE-SU-2025_01633-1

USN-7496-1

USN-7496-2

USN-7496-3

USN-7496-4

USN-7496-5

USN-7506-1

USN-7506-2

USN-7506-3

USN-7506-4

Affected Products

Astra Linux

Linux Kernel

Suse

Ubuntu

References · 420

• 🔥 https://github.com/TurtleARM/CVE-2023-0179-PoC · Exploit
• 🔥 https://github.com/H4K6/CVE-2023-0179-PoC · Exploit
• https://osv.dev/vulnerability/USN-7506-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7506-2 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:01633-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47143 · Security Note
• https://ubuntu.com/security/CVE-2024-53063 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47142 · Security Note
• https://ubuntu.com/security/CVE-2021-47245 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-47163 · Security Note
• https://osv.dev/vulnerability/USN-7496-2 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7496-4 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47163 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-47587 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-52578 · Security Note