#VU104561 NULL pointer dereference in Linux kernel - CVE-2022-49332

Vulnerability identifier: #VU104561

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-2022-49332

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 lpfc_device_reset_handler() and lpfc_target_reset_handler() functions in drivers/scsi/lpfc/lpfc_scsi.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.18, 5.18 rc1, 5.18 rc2, 5.18 rc3, 5.18 rc5, 5.18 rc6, 5.18 rc7, 5.18 rc8, 5.18.1, 5.18.2, 5.18.3, 5.19 rc1, 5.19 rc4, 5.19 rc5, 5.19 rc6

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External links
https://git.kernel.org/stable/c/68fcff1127e4995ddbd4b6861892a25c23db3f70
https://git.kernel.org/stable/c/6f808bd78e8296b4ded813b7182988d57e1f6176
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.4
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19

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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.