Vulnerability identifier: #VU9765

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-16994

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 on the target system.

The weakness exists due to the walk_hugetlb_range function in mm/pagewalk.c in the Linux kernel mishandles holes in hugetlb ranges. A local attacker can make specially crafted mincore() system call and obtain sensitive information from uninitialized kernel memory.

Mitigation
Update to version 4.14.2.

Vulnerable software versions

Linux kernel: 4.13.1 - 4.13.16, 4.12.1 - 4.12.14, 4.11.1 - 4.11.12, 4.10.0 - 4.10.17, 4.14 - 4.14.1

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External links
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=373c4557d2aa362702c4c2...

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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.