NULL pointer dereference in Linux kernel tipc



| Updated: 2025-05-11
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-56661
CWE-ID CWE-476
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU102119

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-56661

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the cleanup_bearer() function in net/tipc/udp_media.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.4 - 5.4.287

CPE2.3 External links

https://git.kernel.org/stable/c/07b569eda6fe6a1e83be5a587abee12d1303f95e
https://git.kernel.org/stable/c/754ec823ee53422361da7958a8c8bf3275426912
https://git.kernel.org/stable/c/89ecda492d0a37fd00aaffc4151f1f44c26d93ac
https://git.kernel.org/stable/c/a771f349c95d3397636861a0a6462d4a7a7ecb25
https://git.kernel.org/stable/c/a852c82eda4991e21610837aaa160965be71f5cc
https://git.kernel.org/stable/c/b04d86fff66b15c07505d226431f808c15b1703c
https://git.kernel.org/stable/c/d1d4dfb189a115734bff81c411bc58d9e348db7d
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.288


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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