CVE-2015-8844

Description

The signal implementation in the Linux kernel before 4.3.5 on powerpc platforms does not check for an MSR with both the S and T bits set, which allows local users to cause a denial of service (TM Bad Thing exception and panic) via a crafted application.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.09%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.5
http://www.openwall.com/lists/oss-security/2016/04/13/1 mailing list
http://rhn.redhat.com/errata/RHSA-2016-2584.html vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d2b9d2a5ad5ef04ff978c9923d19730cb05efd55 vendor advisory
http://rhn.redhat.com/errata/RHSA-2016-2574.html vendor advisory
http://www.securitytracker.com/id/1035594 vdb entry
https://github.com/torvalds/linux/commit/d2b9d2a5ad5ef04ff978c9923d19730cb05efd55
https://bugzilla.redhat.com/show_bug.cgi?id=1326540

Frequently Asked Questions

What is the severity of CVE-2015-8844?
CVE-2015-8844 has been scored as a medium severity vulnerability.
How to fix CVE-2015-8844?
To fix CVE-2015-8844, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-8844 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2015-8844 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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