#VU104615 NULL pointer dereference in Linux kernel - CVE-2022-49703

Vulnerability identifier: #VU104615

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-2022-49703

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 ibmvfc_alloc_queue() and ibmvfc_register_scsi_channel() functions in drivers/scsi/ibmvscsi/ibmvfc.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/6d38e3b614ded59da8b95377a98df969a5a5627a
https://git.kernel.org/stable/c/8540f66196ca35b7b5e902932571c18b9fde0cd1
https://git.kernel.org/stable/c/aeaadcde1a60138bceb65de3cdaeec78170b4459

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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.