Denial of service in Linux Kernel



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-18360
CWE-ID CWE-369
Exploitation vector Local
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Division by zero

EUVDB-ID: #VU17344

Risk: Low

CVSSv4.0: 5.4 [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:P/U:Clear]

CVE-ID: CVE-2017-18360

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

The vulnerability allows a local attacker to cause DoS condition.

The weakness exists due to a division-by-zero condition in the change_port_settings function, as defined in the drivers/usb/serial/io_ti.c source code file. A local attacker can maliciously set high baud rates and cause the targeted system to crash

Mitigation

Update to version 4.11.3.

Vulnerable software versions

Linux kernel: 4.10.0 - 4.11.2

CPE2.3 External links

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6aeb75e6adfaed16e58780309613a578fe1ee90b
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.3
https://github.com/torvalds/linux/commit/6aeb75e6adfaed16e58780309613a578fe1ee90b


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. However, proof of concept for this vulnerability is available.



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