RHSA-2017:0324: Important: kernel security update
First published: Fri Feb 24 2017(Updated: )
The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> A use-after-free flaw was found in the way the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation freed SKB (socket buffer) resources for a DCCP_PKT_REQUEST packet when the IPV6_RECVPKTINFO option is set on the socket. A local, unprivileged user could use this flaw to alter the kernel memory, allowing them to escalate their privileges on the system. (CVE-2017-6074, Important)</li> Red Hat would like to thank Andrey Konovalov (Google) for reporting this issue.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <2.6.32-504.57.1.el6 | 2.6.32-504.57.1.el6 |
| redhat/kernel | <2.6.32-504.57.1.el6 | 2.6.32-504.57.1.el6 |
| redhat/kernel-abi-whitelists | <2.6.32-504.57.1.el6 | 2.6.32-504.57.1.el6 |
| redhat/kernel-debug | <2.6.32-504.57.1.el6 | 2.6.32-504.57.1.el6 |
| redhat/kernel-debug-debuginfo | <2.6.32-504.57.1.el6 | 2.6.32-504.57.1.el6 |
| redhat/kernel-debug-devel | <2.6.32-504.57.1.el6 | 2.6.32-504.57.1.el6 |
| redhat/kernel-debuginfo | <2.6.32-504.57.1.el6 | 2.6.32-504.57.1.el6 |
| redhat/kernel-devel | <2.6.32-504.57.1.el6 | 2.6.32-504.57.1.el6 |
| redhat/kernel-doc | <2.6.32-504.57.1.el6 | 2.6.32-504.57.1.el6 |
| redhat/kernel-firmware | <2.6.32-504.57.1.el6 | 2.6.32-504.57.1.el6 |
| redhat/kernel-headers | <2.6.32-504.57.1.el6 | 2.6.32-504.57.1.el6 |
| redhat/perf | <2.6.32-504.57.1.el6 | 2.6.32-504.57.1.el6 |
| redhat/perf-debuginfo | <2.6.32-504.57.1.el6 | 2.6.32-504.57.1.el6 |
| redhat/python-perf | <2.6.32-504.57.1.el6 | 2.6.32-504.57.1.el6 |
| redhat/python-perf-debuginfo | <2.6.32-504.57.1.el6 | 2.6.32-504.57.1.el6 |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2017:0324?
The severity of RHSA-2017:0324 is classified as important.
How do I fix RHSA-2017:0324?
To fix RHSA-2017:0324, upgrade your kernel to version 2.6.32-504.57.1.el6 or later.
Which systems are impacted by RHSA-2017:0324?
RHSA-2017:0324 affects systems running the Red Hat kernel version 2.6.32-504.57.1.el6 and earlier.
What type of vulnerability is RHSA-2017:0324?
RHSA-2017:0324 is a use-after-free vulnerability in the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation.
Is there a workaround for RHSA-2017:0324?
There is no workaround for RHSA-2017:0324; applying the recommended update is necessary.
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