#VU93621 Buffer overflow in Linux kernel - CVE-2023-52748

Vulnerability identifier: #VU93621

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-2023-52748

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 f2fs_init_page_array_cache() function in fs/f2fs/compress.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/c041f5ddef00c731c541e00bc8ae97b8c84c682f
https://git.kernel.org/stable/c/e4088d7d8f1123006d46a42edf51b8c960a58ef9
https://git.kernel.org/stable/c/526dd7540a09ecf87b5f54f3ab4e0a2528f25a79
https://git.kernel.org/stable/c/6fca08fd3085253b48fcb1bd243a0a5e18821a00
https://git.kernel.org/stable/c/3eebe636cac53886bd5d1cdd55e082ec9e84983f
https://git.kernel.org/stable/c/e0d4e8acb3789c5a8651061fbab62ca24a45c063

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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.