REDHAT-BUG-1024854
First published: Wed Oct 30 2013(Updated: )
A flaw was found in the way ipc_rcu_putref() function handled reference counter decrementing. Without external synchronization reference counter might not be adjusted properly, as presented with the freeque() vs do_msgsnd() race, leading to memory leaks. An unprivileged local user could use this flaw to cause OOM conditions, potentially crashing the system. References: <a href="https://wiki.openvz.org/Download/kernel/rhel6-testing/042stab084.3">https://wiki.openvz.org/Download/kernel/rhel6-testing/042stab084.3</a> Upstream patch: <a href="http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6062a8">http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6062a8</a> (making the refcounter atomic hunks) Acknowledgements: Red Hat would like to thank Vladimir Davydov (Parallels) for reporting this issue.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Linux kernel |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://wiki.openvz.org/Download/kernel/rhel6-testing/042stab084.3
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6062a8
- https://rhn.redhat.com/errata/RHSA-2014-0285.html
- https://rhn.redhat.com/errata/RHSA-2014-0439.html
- https://rhn.redhat.com/errata/RHSA-2014-1392.html
- https://rhn.redhat.com/errata/RHSA-2015-0284.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1024854
Frequently Asked Questions
What is the severity of REDHAT-BUG-1024854?
The severity of REDHAT-BUG-1024854 is classified as a memory leak vulnerability that can be exploited by unprivileged local users.
How do I fix REDHAT-BUG-1024854?
To fix REDHAT-BUG-1024854, ensure you apply the latest kernel updates provided by Red Hat for your system.
Who is affected by REDHAT-BUG-1024854?
Users of the Red Hat Linux kernel are affected by the vulnerability referenced by REDHAT-BUG-1024854.
What is the impact of REDHAT-BUG-1024854?
The impact of REDHAT-BUG-1024854 includes potential memory leaks which can lead to resource exhaustion.
Is there a workaround for REDHAT-BUG-1024854?
There is no specific workaround for REDHAT-BUG-1024854, and the recommended action is to update the kernel to the patched version.
- agent/type
- agent/first-publish-date
- agent/last-modified-date
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2013-4483
- agent/severity
- agent/references
- agent/description
- agent/event
- agent/source
- agent/tags
- agent/softwarecombine
- agent/guess-ai
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/red hat
- canonical/red hat linux kernel