Vulnerability Description
The fork implementation in the Linux kernel before 4.5 on s390 platforms mishandles the case of four page-table levels, which allows local users to cause a denial of service (system crash) or possibly have unspecified other impact via a crafted application, related to arch/s390/include/asm/mmu_context.h and arch/s390/include/asm/pgalloc.h.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.25, < 3.2.79 |
| Debian | Debian Linux | 6.0 |
| Redhat | Enterprise Linux | 7.0 |
| Oracle | Linux | 7 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3446c1PatchVendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00019.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00059.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1539.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2766.htmlThird Party Advisory
- http://www.debian.org/security/2016/dsa-3607Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.hThird Party Advisory
- https://github.com/torvalds/linux/commit/3446c13b268af86391d06611327006b059b8babPatch
- https://security-tracker.debian.org/tracker/CVE-2016-2143Third Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3446c1PatchVendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00019.htmlThird Party Advisory
FAQ
What is CVE-2016-2143?
CVE-2016-2143 is a vulnerability with a CVSS score of 7.8 (HIGH). The fork implementation in the Linux kernel before 4.5 on s390 platforms mishandles the case of four page-table levels, which allows local users to cause a denial of service (system crash) or possibly...
How severe is CVE-2016-2143?
CVE-2016-2143 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-2143?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux, Redhat Enterprise Linux, Oracle Linux.