CVE Database


Impact: Moderate
Public: 2013-10-29
Bugzilla: 1024854: CVE-2013-4483 kernel: ipc: ipc_rcu_putref refcount races


A flaw was found in the way the ipc_rcu_putref() function in the Linux kernel's IPC implementation handled reference counter decrementing. A local, unprivileged user could use this flaw to trigger an Out of Memory (OOM) condition and, potentially, crash the system.

Find out more about CVE-2013-4483 from the MITRE CVE dictionary and NIST NVD.


This issue does affect Linux kernel packages as shipped with Red Hat Enterprise Linux 6. Future kernel updates for respective releases may address this issue.

CVSS v2 metrics

Base Score: 4.9
Base Metrics: AV:L/AC:L/Au:N/C:N/I:N/A:C
Access Vector: Local
Access Complexity: Low
Authentication: None
Confidentiality Impact: None
Integrity Impact: None
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
MRG Grid for RHEL 6 Server v.2 (kernel-rt) RHSA-2014:0439 April 28, 2014
Red Hat Enterprise Linux Server EUS (v. 6.5) (kernel) RHSA-2015:0284 March 03, 2015
Red Hat Enterprise Linux version 5 (kernel) RHSA-2014:0285 March 12, 2014
Red Hat Enterprise Linux version 6 (kernel) RHSA-2014:1392 October 13, 2014

External References


Red Hat would like to thank Vladimir Davydov (Parallels) for reporting this issue.

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For clarification or corrections please contact the Red Hat Security Response Team.