NULL pointer dereference in Linux kernel gadget function driver

1) NULL pointer dereference

EUVDB-ID: #VU96340

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-52894

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

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: All versions

External links

http://git.kernel.org/stable/c/fef6b29671b66dfb71f17e337c1ad14b5a2cedae
http://git.kernel.org/stable/c/63d161f29cd39c050e8873aa36e0c9fc013bb763
http://git.kernel.org/stable/c/a21da7f7aae618c785f7e4a275d43c06dc8412b6
http://git.kernel.org/stable/c/e92c70059178da751e5af7de02384b7dfadb5ec7
http://git.kernel.org/stable/c/a69c8dfb85b44be9cc223be07d35cc3a9baefbea
http://git.kernel.org/stable/c/09e4507ec8ef2d44da6ba4092b8ee2d81f216497
http://git.kernel.org/stable/c/c6ec929595c7443250b2a4faea988c62019d5cd2

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.