CVE-2016-8650

Description

The mpi_powm function in lib/mpi/mpi-pow.c in the Linux kernel through 4.8.11 does not ensure that memory is allocated for limb data, which allows local users to cause a denial of service (stack memory corruption and panic) via an add_key system call for an RSA key with a zero exponent.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.04%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/torvalds/linux/commit/f5527fffff3f002b0a6b376163613b82f69de073 issue tracking third party advisory patch
http://www.securitytracker.com/id/1037968 vdb entry
http://seclists.org/fulldisclosure/2016/Nov/76 mailing list
http://www.openwall.com/lists/oss-security/2016/11/24/8 third party advisory mailing list
https://bugzilla.redhat.com/show_bug.cgi?id=1395187 issue tracking
https://access.redhat.com/errata/RHSA-2018:1854 vendor advisory
https://access.redhat.com/errata/RHSA-2017:0932 vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f5527fffff3f002b0a6b376163613b82f69de073 issue tracking patch vendor advisory
https://access.redhat.com/errata/RHSA-2017:0933 vendor advisory
https://access.redhat.com/errata/RHSA-2017:0931 vendor advisory
http://www.securityfocus.com/bid/94532 vdb entry
https://source.android.com/security/bulletin/2017-03-01.html

Frequently Asked Questions

What is the severity of CVE-2016-8650?
CVE-2016-8650 has been scored as a medium severity vulnerability.
How to fix CVE-2016-8650?
To fix CVE-2016-8650, 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-2016-8650 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-8650 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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