#VU90515 NULL pointer dereference in Linux kernel - CVE-2022-48688

Vulnerability identifier: #VU90515

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-2022-48688

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 i40e_notify_client_of_netdev_close() and i40e_client_subtask() functions in drivers/net/ethernet/intel/i40e/i40e_client.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/c49f320e2492738d478bc427dcd54ccfe0cba746
https://git.kernel.org/stable/c/5332a094514852d5e58c278cf4193adb937337fc
https://git.kernel.org/stable/c/342d77769a6cceb3df7720a1e18baa4339eee3fc
https://git.kernel.org/stable/c/2ed94383f3a2693dbf5bc47c514b42524bd8f9ae
https://git.kernel.org/stable/c/38af35bec59a8431a1eb29da994a0a45cba275d9
https://git.kernel.org/stable/c/fb8396aeda5872369a8ed6d2301e2c86e303c520

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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.