#VU102185 Input validation error in Linux kernel - CVE-2024-56638

Vulnerability identifier: #VU102185

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-2024-56638

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_inner_parse() and nft_inner_parse_needed() functions in net/netfilter/nft_inner.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/53c7314208c865086d78b4e88da53bc33da0b603
https://git.kernel.org/stable/c/7b1d83da254be3bf054965c8f3b1ad976f460ae5
https://git.kernel.org/stable/c/da5cc778e7bf78fe525bc90ec2043f41415c31d9

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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.