NULL pointer dereference in Linux kernel interface vchiq_arm driver

1) NULL pointer dereference

EUVDB-ID: #VU104631

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-2022-49106

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

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 vchiq_dump_platform_instances() function in drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.15 - 5.18 rc8

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:5.15:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15:rc4:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15:rc5:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15:rc6:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15:rc7:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15.1:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/176df12b38c70b0a45e6392a0ee5bc83489dfc29
https://git.kernel.org/stable/c/4627250cabaa80278d3ab01ad107893cea83799f
https://git.kernel.org/stable/c/51e5e5c34c22c0bfec0808d8c33e0b2fcf4c7c89
https://git.kernel.org/stable/c/aa899e686d442c63d50f4d369cc02dbbf0941cb0
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.34
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.20
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.3
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18

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.