#VU102199 Improper error handling in Linux kernel - CVE-2024-56639

Vulnerability identifier: #VU102199

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-2024-56639

CWE-ID: CWE-388

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 improper error handling within the hsr_init_skb(), send_hsr_supervision_frame() and send_prp_supervision_frame() functions in net/hsr/hsr_device.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.12, 6.12.1, 6.12.2, 6.12.3, 6.12.4

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External links
https://git.kernel.org/stable/c/688842f47ee9fb392d1c3a1ced1d21d505b14968
https://git.kernel.org/stable/c/af8edaeddbc52e53207d859c912b017fd9a77629
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.5
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13

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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.