CVE-2016-8650

low-risk
Published 2016-11-28

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.

Do I need to act?

-
0.04% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (24)

Issue Tracking http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f5527f...
Mailing List http://seclists.org/fulldisclosure/2016/Nov/76
Mailing List http://www.openwall.com/lists/oss-security/2016/11/24/8
http://www.securityfocus.com/bid/94532
http://www.securitytracker.com/id/1037968
https://access.redhat.com/errata/RHSA-2017:0931
https://access.redhat.com/errata/RHSA-2017:0932
https://access.redhat.com/errata/RHSA-2017:0933
https://access.redhat.com/errata/RHSA-2018:1854
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1395187
Issue Tracking https://github.com/torvalds/linux/commit/f5527fffff3f002b0a6b376163613b82f69de07...
https://source.android.com/security/bulletin/2017-03-01.html
Issue Tracking http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f5527f...
Mailing List http://seclists.org/fulldisclosure/2016/Nov/76
Mailing List http://www.openwall.com/lists/oss-security/2016/11/24/8
http://www.securityfocus.com/bid/94532
http://www.securitytracker.com/id/1037968
https://access.redhat.com/errata/RHSA-2017:0931
https://access.redhat.com/errata/RHSA-2017:0932
https://access.redhat.com/errata/RHSA-2017:0933
and 4 more references
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal