#VU96540 Improper locking in Linux kernel - CVE-2024-43893

Vulnerability identifier: #VU96540

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-2024-43893

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 uart_set_info() function in drivers/tty/serial/serial_core.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/3bbd90fca824e6fd61fb20f6dd2b0fa5f8b14bba
https://git.kernel.org/stable/c/55b2a5d331a6ceb1c4372945fdb77181265ba24f
https://git.kernel.org/stable/c/52b138f1021113e593ee6ad258ce08fe90693a9e
https://git.kernel.org/stable/c/9196e42a3b8eeff1707e6ef769112b4b6096be49
https://git.kernel.org/stable/c/e13ba3fe5ee070f8a9dab60029d52b1f61da5051
https://git.kernel.org/stable/c/e3ad503876283ac3fcca922a1bf243ef9eb0b0e2
https://git.kernel.org/stable/c/68dc02f319b9ee54dc23caba742a5c754d1cccc8
https://git.kernel.org/stable/c/6eabce6608d6f3440f4c03aa3d3ef50a47a3d193

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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.