Denial of service in Linux Kernel

Published: 2018-01-18

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-8087 CVE-2017-18174
CWE-ID	CWE-401 CWE-415
Exploitation vector	Local
Public exploit	N/A
Vulnerable software	Linux kernel Operating systems & Components / Operating system
Vendor	Linux Foundation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Memory corruption

EUVDB-ID: #VU11137

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-8087

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

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

The weakness exists in the hwsim_new_radio_nl function due to memory leak. A local attacker can trigger memory corruption and cause the service the crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.10.0 - 4.15.9

CPE2.3

cpe:2.3:o:linux_foundation:linux_kernel:4.15.9:*:*:*:*:*:*:*

External links

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ddcff49b672239dda94d7...

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.

2) Double free error

EUVDB-ID: #VU11138

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-18174

CWE-ID: CWE-415 - Double Free