#VU94144 Input validation error in Linux kernel - CVE-2023-52488

Vulnerability identifier: #VU94144

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-2023-52488

CWE-ID: CWE-20

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 input validation within the sc16is7xx_fifo_read(), sc16is7xx_fifo_write() and sc16is7xx_regmap_precious() functions in drivers/tty/serial/sc16is7xx.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/416b10d2817c94db86829fb92ad43ce7d002c573
https://git.kernel.org/stable/c/084c24e788d9cf29c55564de368bf5284f2bb5db
https://git.kernel.org/stable/c/aa7cb4787698add9367b19f7afc667662c9bdb23
https://git.kernel.org/stable/c/dbf4ab821804df071c8b566d9813083125e6d97b
https://git.kernel.org/stable/c/e635f652696ef6f1230621cfd89c350cb5ec6169
https://git.kernel.org/stable/c/4e37416e4ee1b1bc17364a68973e0c63be89e611
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html

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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.