#VU96340 NULL pointer dereference in Linux kernel - CVE-2023-52894

Vulnerability identifier: #VU96340

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-2023-52894

CWE-ID: CWE-476

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 NULL pointer dereference within the func_to_ncm() function in drivers/usb/gadget/function/f_ncm.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.14, 4.14.0, 4.14.0 rc1, 4.14.1, 4.14.2, 4.14.3, 4.14.4, 4.14.5, 4.14.6, 4.14.7, 4.14.8, 4.14.9, 4.14.10, 4.14.11, 4.14.12, 4.14.13, 4.14.14, 4.14.15, 4.14.16, 4.14.17, 4.14.18, 4.14.19, 4.14.20, 4.14.21, 4.14.22, 4.14.23, 4.14.24, 4.14.25, 4.14.26, 4.14.27, 4.14.28, 4.14.29, 4.14.30, 4.14.31, 4.14.32, 4.14.33, 4.14.34, 4.14.35, 4.14.36, 4.14.37, 4.14.38, 4.14.39, 4.14.40, 4.14.41, 4.14.42, 4.14.43, 4.14.44, 4.14.45, 4.14.46, 4.14.47, 4.14.48, 4.14.49, 4.14.50, 4.14.51, 4.14.52, 4.14.53, 4.14.54, 4.14.55, 4.14.56, 4.14.57, 4.14.58, 4.14.59, 4.14.60, 4.14.61, 4.14.62, 4.14.63, 4.14.64, 4.14.65, 4.14.66, 4.14.67, 4.14.68, 4.14.69, 4.14.70, 4.14.71, 4.14.72, 4.14.73, 4.14.74, 4.14.75, 4.14.76, 4.14.77, 4.14.78, 4.14.79, 4.14.80, 4.14.81, 4.14.82, 4.14.83, 4.14.84, 4.14.85, 4.14.86, 4.14.87, 4.14.88, 4.14.89, 4.14.90, 4.14.91, 4.14.92, 4.14.93, 4.14.94, 4.14.95, 4.14.96, 4.14.97, 4.14.98, 4.14.99, 4.14.100, 4.14.101, 4.14.102, 4.14.103, 4.14.104, 4.14.105, 4.14.106, 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External links
https://git.kernel.org/stable/c/fef6b29671b66dfb71f17e337c1ad14b5a2cedae
https://git.kernel.org/stable/c/63d161f29cd39c050e8873aa36e0c9fc013bb763
https://git.kernel.org/stable/c/a21da7f7aae618c785f7e4a275d43c06dc8412b6
https://git.kernel.org/stable/c/e92c70059178da751e5af7de02384b7dfadb5ec7
https://git.kernel.org/stable/c/a69c8dfb85b44be9cc223be07d35cc3a9baefbea
https://git.kernel.org/stable/c/09e4507ec8ef2d44da6ba4092b8ee2d81f216497
https://git.kernel.org/stable/c/c6ec929595c7443250b2a4faea988c62019d5cd2
https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.304
https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.271
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.165
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.90
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.230
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.8
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2

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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.