#VU96432 Improper locking in Linux kernel - CVE-2022-48941

Vulnerability identifier: #VU96432

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-2022-48941

CWE-ID: CWE-667

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 locking within the ice_free_vfs(), ice_reset_all_vfs(), ice_reset_vf(), ice_process_vflr_event() and ice_vf_lan_overflow_event() functions in drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c, within the ice_handle_mdd_event() function in drivers/net/ethernet/intel/ice/ice_main.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/05ae1f0fe9c6c5ead08b306e665763a352d20716
https://git.kernel.org/stable/c/3c805fce07c9dbc47d8a9129c7c5458025951957
https://git.kernel.org/stable/c/2a3e61de89bab6696aa28b70030eb119968c5586
https://git.kernel.org/stable/c/fadead80fe4c033b5e514fcbadd20b55c4494112

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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.