Vulnerability identifier: #VU9780

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-2017-17864

CWE-ID: CWE-401

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 kernel/bpf/verifier.c in the Linux kernel mishandles states_equal comparisons between the pointer data type and the UNKNOWN_VALUE data type. A local attacker can trigger a memory leak and obtain potentially sensitive address information.

Mitigation
Update to version 4.14.8.

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 - 4.14.7

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External links
http://github.com/torvalds/linux/commit/179d1c5602997fef5a940c6ddcf31212cbfebd14#diff-3f169a344ebaf...

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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.