Denial of service in Linux Kernel

Published: 2017-07-10

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-10087 CVE-2018-10124
CWE-ID	CWE-20
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) Improper input validation

EUVDB-ID: #VU11878

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-2018-10087

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The weakness exists in the kernel_wait4 function in kernel/exit.c due to improper validation of the INT_MIN parameter. A local attacker can trigger an error condition and cause the service to crash.

Mitigation

Update to version 4.13 or later.

Vulnerable software versions

Linux kernel: 4.12 - 4.12.14

CPE2.3

cpe:2.3:o:linux_foundation:linux_kernel:4.12.14:*:*:*:*:*:*:*

External links

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dd83c161fbcc5d8be637ab...

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) Improper input validation

EUVDB-ID: #VU11879