Improper error handling in Linux kernel irqchip driver

1) Improper error handling

EUVDB-ID: #VU104743

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-2022-49716

CWE-ID: CWE-388 - Error Handling

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper error handling within the gic_populate_ppi_partitions() function in drivers/irqchip/irq-gic-v3.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.4 - 5.19 rc6

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:5.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.0:rc6:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.4.7:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/0b325d993995a321f6ab4e6c51f0504ec092bf5b
https://git.kernel.org/stable/c/58e67c81e229351027d28c610638378606e33a08
https://git.kernel.org/stable/c/7c9dd9d23f26dabcfb14148b9acdfba540418b19
https://git.kernel.org/stable/c/c83c34c57798fc41faefcf078be78683db2f4beb
https://git.kernel.org/stable/c/ec8401a429ffee34ccf38cebf3443f8d5ae6cb0d
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.124
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.49
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.6
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.200

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.