#VU92021 Improper locking in Linux kernel - CVE-2024-35910

Vulnerability identifier: #VU92021

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-2024-35910

CWE-ID: CWE-667

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 locking within the tcp_close() function in net/ipv4/tcp.c, within the inet_csk_clear_xmit_timers() function in net/ipv4/inet_connection_sock.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/93f0133b9d589cc6e865f254ad9be3e9d8133f50
https://git.kernel.org/stable/c/44e62f5d35678686734afd47c6a421ad30772e7f
https://git.kernel.org/stable/c/e3e27d2b446deb1f643758a0c4731f5c22492810
https://git.kernel.org/stable/c/2e43d8eba6edd1cf05a3a20fdd77688fa7ec16a4
https://git.kernel.org/stable/c/91b243de910a9ac8476d40238ab3dbfeedd5b7de
https://git.kernel.org/stable/c/c1ae4d1e76eacddaacb958b67cd942082f800c87
https://git.kernel.org/stable/c/899265c1389fe022802aae73dbf13ee08837a35a
https://git.kernel.org/stable/c/151c9c724d05d5b0dd8acd3e11cb69ef1f2dbada

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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.