CVE-2016-2117

Impact:
Low
Public Date:
2016-03-16
CWE:
CWE-120
Bugzilla:
1312298: CVE-2016-2117 kernel: Kernel memory leakage to ethernet frames due to buffer overflow in ethernet drivers
It was discovered that the atl2_probe() function in the Atheros L2 Ethernet driver in the Linux kernel incorrectly enabled scatter/gather I/O. A remote attacker could use this flaw to obtain potentially sensitive information from the kernel memory.

Find out more about CVE-2016-2117 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 as the code with the flaw is not present in the products listed.

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 6 as the suspected driver does not advertise that it has scatter-gather feature, which presence is essential for the flaw.

This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and MRG-2, namely the [atl2] Ethernet driver which is the only driver affected. Future Linux kernel updates for the respective releases might address this issue.

Red Hat Enterprise MRG 2:
This vulnerability has been rated as having a security impact of Low. After evaluation and in accordance with the criteria noted in the product support life cycle, there are no plans to address this issue in an upcoming release. Please contact Red Hat Support for further information.

CVSS v2 metrics

Base Score 2.6
Base Metrics AV:N/AC:H/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity High
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux for Real Time for NFV (v. 7) (kernel-rt) RHSA-2016:2584 2016-11-03
Red Hat Enterprise Linux 7 (kernel) RHSA-2016:2574 2016-11-03

Affected Packages State

Platform Package State
Red Hat Enterprise MRG 2 realtime-kernel Will not fix
Red Hat Enterprise Linux 6 kernel Not affected
Red Hat Enterprise Linux 5 kernel Not affected
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.

Acknowledgements

Red Hat would like to thank Justin Yackoski (Cryptonite) for reporting this issue.
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