#VU102119 NULL pointer dereference in Linux kernel - CVE-2024-56661

Vulnerability identifier: #VU102119

Vulnerability 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

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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: All versions

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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

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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.