CVE-2016-8650
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…
Does this matter?
Lower severity and a low EPSS score (0.41%). Track it; it rarely justifies an emergency change on its own.
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 3.0
- 5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.41% probability · 35th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20, CWE-399
- Affected
- linux/linux kernel
- Source
- secalert@redhat.com
EPSS 0.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f5527fffff3f002b0a6b376163613b82f69de073Issue Tracking, Patch, Vendor Advisory
- http://seclists.org/fulldisclosure/2016/Nov/76Mailing List
- http://www.openwall.com/lists/oss-security/2016/11/24/8Mailing List, Third 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/f5527fffff3f002b0a6b376163613b82f69de073Issue Tracking, Patch, Third 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=f5527fffff3f002b0a6b376163613b82f69de073Issue Tracking, Patch, Vendor Advisory
- http://seclists.org/fulldisclosure/2016/Nov/76Mailing List
- http://www.openwall.com/lists/oss-security/2016/11/24/8Mailing List, Third 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/f5527fffff3f002b0a6b376163613b82f69de073Issue Tracking, Patch, Third Party Advisory
- https://source.android.com/security/bulletin/2017-03-01.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.