CVE-2015-8845
First published: Wed Apr 27 2016(Updated: )
The tm_reclaim_thread function in arch/powerpc/kernel/process.c in the Linux kernel before 4.4.1 on powerpc platforms does not ensure that TM suspend mode exists before proceeding with a tm_reclaim call, which allows local users to cause a denial of service (TM Bad Thing exception and panic) via a crafted application.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <=4.4 | |
| SUSE Linux Enterprise Live Patching | =12.0 | |
| SUSE Linux Enterprise Module for Public Cloud | =12.0 | |
| SUSE Linux Enterprise Real Time Extension | =12-sp1 | |
| SUSE Linux Enterprise Software Development Kit | =12.0 | |
| SUSE Linux Enterprise Workstation Extension | =12.0 | |
| SUSE Linux Enterprise Desktop | =12.0 | |
| SUSE Linux Enterprise Server | =12.0 |
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Reference Links
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7f821fc9c77a9b01fe7b1d6e72717b33d8d64142
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html
- http://rhn.redhat.com/errata/RHSA-2016-2574.html
- http://rhn.redhat.com/errata/RHSA-2016-2584.html
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.1
- http://www.openwall.com/lists/oss-security/2016/04/13/1
- http://www.securitytracker.com/id/1035594
- https://bugzilla.redhat.com/show_bug.cgi?id=1326540
- https://github.com/torvalds/linux/commit/7f821fc9c77a9b01fe7b1d6e72717b33d8d64142
Frequently Asked Questions
What is the severity of CVE-2015-8845?
CVE-2015-8845 has a medium severity rating due to its potential to cause denial of service on vulnerable PowerPC systems.
How do I fix CVE-2015-8845?
To fix CVE-2015-8845, you should upgrade your Linux kernel to version 4.4.1 or later.
Which systems are affected by CVE-2015-8845?
CVE-2015-8845 affects Linux kernel versions prior to 4.4.1 on PowerPC platforms, particularly those in SUSE Linux Enterprise version 12.0.
What vulnerability does CVE-2015-8845 introduce?
CVE-2015-8845 allows local users to initiate a TM Bad Thing exception, leading to a system panic.
Is CVE-2015-8845 specific to a certain Linux distribution?
CVE-2015-8845 is notably relevant to SUSE Linux distributions including SUSE Linux Enterprise and its various modules.
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