Improper error handling in Linux kernel gadget function driver

1) Improper error handling

EUVDB-ID: #VU104745

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-2022-49686

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 uvcg_video_pump() function in drivers/usb/gadget/function/uvc_video.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 - 5.18.7

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:5.18:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18:rc5:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18:rc6:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18:rc7:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18:rc8:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.18.2:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/96163f835e65f8c9897487fac965819f0651d671
https://git.kernel.org/stable/c/d95ac8b920de1d39525fadc408ce675697626ca6
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.8

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.