Vulnerability identifier: #VU20854

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-2017-18549

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 user to gain access to potentially sensitive information.

The vulnerability exists in the "drivers/scsi/aacraid/commctrl.c" file due to insufficient initialization of the reply structure by the "aac_send_raw_srb" function. A local authenticated user can access the system, execute an application that submits malicious input to the affected software and access sensitive stack memory information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: 4.0 - 4.0.9, 4.1 - 4.1.52, 4.2 - 4.2.8, 4.3 - 4.3.6, 4.4 - 4.4.190, 4.5 - 4.5.7, 4.6 - 4.6.7, 4.7 - 4.7.10, 4.8 - 4.8.17, 4.9 - 4.9.190, 4.10 - 4.10.17, 4.11 - 4.11.12, 4.12 - 4.12.14

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External links
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=342ffc26693b528648bdc9377e51e4f2450b4860

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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.