#VU102496 Input validation error in Linux kernel - CVE-2024-56783

Vulnerability identifier: #VU102496

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-2024-56783

CWE-ID: CWE-20

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 input validation within the nft_socket_cgroup_subtree_level() function in net/netfilter/nft_socket.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/2f9bec0a749eb646b384fde0c7b7c24687b2ffae
https://git.kernel.org/stable/c/7064a6daa4a700a298fe3aee11dea296bfe59fc4
https://git.kernel.org/stable/c/b7529880cb961d515642ce63f9d7570869bbbdc3
https://git.kernel.org/stable/c/e227c042580ab065edc610c9ddc9bea691e6fc4d

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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.