Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 4.8.11 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f5527fIssue TrackingPatchVendor Advisory
- http://seclists.org/fulldisclosure/2016/Nov/76Mailing List
- http://www.openwall.com/lists/oss-security/2016/11/24/8Mailing ListThird Party Advisory
- 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
- https://bugzilla.redhat.com/show_bug.cgi?id=1395187Issue Tracking
- https://github.com/torvalds/linux/commit/f5527fffff3f002b0a6b376163613b82f69de07Issue TrackingPatchThird Party Advisory
- https://source.android.com/security/bulletin/2017-03-01.html
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f5527fIssue TrackingPatchVendor Advisory
- http://seclists.org/fulldisclosure/2016/Nov/76Mailing List
- http://www.openwall.com/lists/oss-security/2016/11/24/8Mailing ListThird Party Advisory
FAQ
What is CVE-2016-8650?
CVE-2016-8650 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 memor...
How severe is CVE-2016-8650?
CVE-2016-8650 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-8650?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.