#VU89242 Use-after-free in Linux kernel - CVE-2023-52457

Vulnerability identifier: #VU89242

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-2023-52457

CWE-ID: CWE-416

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 a use-after-free error within the omap8250_remove() function in drivers/tty/serial/8250/8250_omap.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 5.4.268, 5.4.268

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External links
https://git.kernel.org/stable/c/b502fb43f7fb55aaf07f6092ab44657595214b93
https://git.kernel.org/stable/c/bc57f3ef8a9eb0180606696f586a6dcfaa175ed0
https://git.kernel.org/stable/c/828cd829483f0cda920710997aed79130b0af690
https://git.kernel.org/stable/c/d74173bda29aba58f822175d983d07c8ed335494
https://git.kernel.org/stable/c/887a558d0298d36297daea039954c39940228d9b
https://git.kernel.org/stable/c/95e4e0031effad9837af557ecbfd4294a4d8aeee
https://git.kernel.org/stable/c/ad90d0358bd3b4554f243a425168fc7cebe7d04e

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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.