#VU93169 Buffer overflow in Linux kernel - CVE-2023-52778

Vulnerability identifier: #VU93169

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-2023-52778

CWE-ID: CWE-119

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 memory corruption within the mptcp_update_infinite_map() and mptcp_sendmsg_frag() functions in net/mptcp/protocol.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/70ff9b65a72885b3a2dfde6709da1f19b85fa696
https://git.kernel.org/stable/c/342b528c0e849bed9def76dadaa470d3af678e94
https://git.kernel.org/stable/c/57ced2eb77343a91d28f4a73675b05fe7b555def
https://git.kernel.org/stable/c/9fce92f050f448a0d1ddd9083ef967d9930f1e52

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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.