#VU1013 Denial of service in Oracle products - CVE-2016-6327

Vulnerability identifier: #VU1013

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-6327

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system
Oracle Linux
Operating systems & Components / Operating system
Oracle VM Server for x86
Server applications / Other server solutions

Vendor: Linux Foundation
Oracle

Description
The vulnerability allows a local user to cause DoS conditions on the target system.
The weakness is caused by drivers/infiniband/ulp/srpt/ib_srpt.c. By using an ABORT_TASK command attackers can abort a device write operation that leads to NULL pointer dereference and system crash.
Successful exploitation of the vulnerability results in denial of service on the vulnerable system.

Mitigation
Update to version 4.5.1.

Vulnerable software versions

Linux kernel: 3.2.78-1 - 3.2.81-1, 3.14.72 - 3.16.7-ckt25-2+deb8u3 , 4.0.1 - 4.0.9, 4.1.1 - 4.1.33, 4.2.1 - 4.2.8, 4.3.1 - 4.3.6, 4.4.1 - 4.4.25, 4.6.2 - 4.6.4-1

Oracle VM Server for x86: 3.3

Oracle Linux: 7

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=1354525
https://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
https://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html

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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.