#VU9761 Out-of-bounds read in Linux kernel - CVE-2017-16645

Vulnerability identifier: #VU9761

Vulnerability 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-2017-16645

CWE-ID: CWE-125

Exploitation vector: Local

Exploit availability: No

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

Vendor: Linux Foundation

Description
The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists due to an error in the ims_pcu_get_cdc_union_desc function in drivers/input/misc/ims-pcu.c in the Linux kernel. A local attacker can supply a specially crafted USB device, trigger ims_pcu_parse_cdc_data out-of-bounds read and cause the system to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation
Update to version 4.13.11.

Vulnerable software versions

Linux kernel: 4.10.0 - 4.13.10

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External links
https://groups.google.com/forum/#!msg/syzkaller/q6jjr1OhqO8/WcA99AVFBAAJ

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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.