RHSA-2017:0403: Important: kernel security update
First published: Thu Mar 02 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 | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-abi-whitelists | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-debug | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-debug-debuginfo | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-debug-devel | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-debuginfo | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-devel | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-doc | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-headers | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-tools | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-tools-debuginfo | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-tools-libs | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-tools-libs-devel | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/perf | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/perf-debuginfo | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/python-perf | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/python-perf-debuginfo | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-debug | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-debug-debuginfo | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-debug-devel | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-debuginfo | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-debuginfo-common-s390x | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-devel | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-headers | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-kdump | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-kdump-debuginfo | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-kdump-devel | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/perf | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/perf-debuginfo | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/python-perf | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/python-perf-debuginfo | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-bootwrapper | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-debuginfo-common-ppc64 | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-tools | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-tools-debuginfo | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-tools-libs | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel-tools-libs-devel | <3.10.0-229.49.1.el7 | 3.10.0-229.49.1.el7 |
| redhat/kernel | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/kernel | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/kernel-abi-whitelists | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/kernel-bootwrapper | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/kernel-debug | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/kernel-debug-debuginfo | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/kernel-debug-devel | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/kernel-debuginfo | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/kernel-debuginfo-common-ppc64le | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/kernel-devel | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/kernel-doc | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/kernel-headers | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/kernel-tools | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/kernel-tools-debuginfo | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/kernel-tools-libs | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/kernel-tools-libs-devel | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/perf | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/perf-debuginfo | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/python-perf | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
| redhat/python-perf-debuginfo | <3.10.0-229.49.1.ael7b | 3.10.0-229.49.1.ael7b |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2017:0403?
The severity of RHSA-2017:0403 is considered important due to a use-after-free vulnerability in the Linux kernel's Datagram Congestion Control Protocol implementation.
How do I fix RHSA-2017:0403?
To fix RHSA-2017:0403, you should update to kernel version 3.10.0-229.49.1.el7 or later.
What systems are affected by RHSA-2017:0403?
RHSA-2017:0403 affects various versions of the Linux kernel and related packages on Red Hat Enterprise Linux 7 systems.
When was the issue associated with RHSA-2017:0403 discovered?
The vulnerability addressed in RHSA-2017:0403 was reported in early 2017.
Is there a risk of exploitation with RHSA-2017:0403 if not addressed?
Yes, there is a potential risk of remote exploitation if the vulnerability in RHSA-2017:0403 is not patched.
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