#VU39356 Input validation error in Linux kernel - CVE-2017-7273

Vulnerability identifier: #VU39356

Vulnerability risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-7273

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows physically proximate attackers to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (integer underflow) or possibly have unspecified other impact via a crafted HID report.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Linux kernel: 4.0 - 4.0.9, 4.1.0 - 4.10.4, 4.2.0 - 4.2.8, 4.3 - 4.3.6, 4.4 - 4.4.32, 4.5.0 - 4.5.7, 4.6 - 4.6.7, 4.7 - 4.7.6, 4.8 - 4.8.17, 4.9.1 - 4.9.3

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External links
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1ebb71143758f45dc0fa76e2f48429e13b16d110
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.4
https://www.securityfocus.com/bid/97190
https://github.com/torvalds/linux/commit/1ebb71143758f45dc0fa76e2f48429e13b16d110

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Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.