#VU93679 Input validation error in Linux kernel - CVE-2023-52677

Vulnerability identifier: #VU93679

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-2023-52677

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 ALIGN() function in arch/riscv/kernel/vmlinux.lds.S, within the INIT_TEXT_SECTION() function in arch/riscv/kernel/vmlinux-xip.lds.S, within the is_kernel_exittext() and patch_map() functions in arch/riscv/kernel/patch.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/938f70d14618ec72e10d6fcf8a546134136d7c13
https://git.kernel.org/stable/c/890cfe5337e0aaf03ece1429db04d23c88da72e7
https://git.kernel.org/stable/c/8db56df4a954b774bdc68917046a685a9fa2e4bc
https://git.kernel.org/stable/c/1d7a03052846f34d624d0ab41a879adf5e85c85f
https://git.kernel.org/stable/c/420370f3ae3d3b883813fd3051a38805160b2b9f

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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.