CVE-2015-8812

Impact:
Moderate
Public Date:
2016-02-11
CWE:
CWE-416
Bugzilla:
1303532: CVE-2015-8812 kernel: CXGB3: Logic bug in return code handling prematurely frees key structures causing Use after free or kernel panic.
A use-after-free flaw was found in the CXGB3 kernel driver when the network was considered to be congested. The kernel incorrectly misinterpreted the congestion as an error condition and incorrectly freed or cleaned up the socket buffer (skb). When the device then sent the skb's queued data, these structures were referenced. A local attacker could use this flaw to panic the system (denial of service) or, with a local account, escalate their privileges.

Find out more about CVE-2015-8812 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue affects the Linux kernels as shipped with Red Hat Enterprise Linux 5, 6 and 7 and Red Hat Enterprise MRG 2 and realtime kernels and may be addressed in a future update.

This has been rated as having Moderate security impact and is not currently
planned to be addressed in future updates in Red Hat Enterprise Linux 5 and 6 . For additional information, refer to the Red Hat Enterprise Linux Life Cycle:
https://access.redhat.com/support/policy/updates/errata/.

Red Hat Enterprise Linux 5:
This vulnerability has been rated as having a security impact of Moderate. 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.

Red Hat Enterprise Linux 6:
This vulnerability has been rated as having a security impact of Moderate. 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.

Red Hat Enterprise MRG 2:
This vulnerability has been rated as having a security impact of Moderate. 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 6.9
Base Metrics AV:L/AC:M/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity Medium
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete

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 kernel Will not fix
Red Hat Enterprise Linux 6 kernel Will not fix
Red Hat Enterprise Linux 5 kernel Will not fix
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

This issue was discovered by Venkatesh Pottem (Red Hat Engineering).
Last Modified