Denial of service in Linux Kernel

1) Race condition

EUVDB-ID: #VU11190

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-2017-18203

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

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

The weakness exists in the dm_get_from_kobject function due to race condition. A local attacker can cause the service to crash.

Mitigation

Update to version 4.14.3.

Vulnerable software versions

Linux kernel: 4.11 - 4.14.2

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:4.14.2:*:*:*:*:*:*:*

External links

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b9a41d21dceadf81048126...

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.