#VU14450 Information disclosure in Linux kernel - CVE-2018-5995

Vulnerability identifier: #VU14450

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-5995

CWE-ID: CWE-200

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 obtain potentially sensitive information.

The vulnerability exists in the pcpu_embed_first_chunk() function, as defined in the mm/percpu.c source code file due to the printk function prints kernel-object address information. A local attacker can access the system and use a a pages/cpu call to read the kernel log.

Mitigation
Update to version 4.14.15.

Vulnerable software versions

Linux kernel: 4.10.0 - 4.14.14

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External links
https://github.com/johnsonwangqize/cve-linux/blob/master/CVE-2018-5995.md

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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.