#VU90655 NULL pointer dereference in Linux kernel - CVE-2023-52471

Vulnerability identifier: #VU90655

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-2023-52471

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 ice_ptp_register_auxbus_driver() and ice_ptp_create_auxbus_device() functions in drivers/net/ethernet/intel/ice/ice_ptp.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.7, 6.7 rc1, 6.7 rc2, 6.7 rc3, 6.7 rc5, 6.7 rc6, 6.7 rc7, 6.7.1, 6.8 rc1, 6.8 rc2, 6.8 rc5

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External links
https://git.kernel.org/stable/c/3cd9b9bee33f39f6c6d52360fe381b89a7b12695
https://git.kernel.org/stable/c/3027e7b15b02d2d37e3f82d6b8404f6d37e3b8cf
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7.2
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8

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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.