Improper locking in Linux kernel input tablet driver

1) Improper locking

EUVDB-ID: #VU94447

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-2022-48836

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

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

The vulnerability exists due to improper locking within the aiptek_probe() function in drivers/input/tablet/aiptek.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.9 - 5.17 rc12

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:4.9:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.8:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/57277a8b5d881e02051ba9d7f6cb3f915c229821
https://git.kernel.org/stable/c/fc8033a55e2796d21e370260a784ac9fbb8305a6
https://git.kernel.org/stable/c/6de20111cd0bb7da9b2294073ba00c7d2a6c1c4f
https://git.kernel.org/stable/c/e732b0412f8c603d1e998f3bff41b5e7d5c3914c
https://git.kernel.org/stable/c/f0d43d22d24182b94d7eb78a2bf6ae7e2b33204a
https://git.kernel.org/stable/c/e762f57ff255af28236cd02ca9fc5c7e5a089d31
https://git.kernel.org/stable/c/35069e654bcab567ff8b9f0e68e1caf82c15dcd7
https://git.kernel.org/stable/c/5600f6986628dde8881734090588474f54a540a8
https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.273
https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.236
https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.308
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.108
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.31
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.17
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.187

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.