Information disclosure in Linux kernel

1) Information disclosure

EUVDB-ID: #VU6613

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-2017-7616

CWE-ID: CWE-388 - Error Handling

Exploit availability: No

Description

The vulnerability allows a local attacker to obtain potentially sensitive information from system memory

The weakness exists due to an error handling flaw in the set_mempolicy() and mbind compat() system calls in 'mm/mempolicy.c'. A local attacker can trigger a failure of a certain bitmap operation and obtain sensitive information from uninitialized stack data.

Successful exploitation of the vulnerability results in information disclosure.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.9.1 - 4.10.9

External links

http://github.com/torvalds/linux/commit/cf01fb9985e8deb25ccf0ea54d916b8871ae0e62

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.