Vulnerability Description
The pmd_none_or_trans_huge_or_clear_bad function in include/asm-generic/pgtable.h in the Linux kernel before 3.13 on NUMA systems does not properly determine whether a Page Middle Directory (PMD) entry is a transparent huge-table entry, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted MADV_WILLNEED madvise system call that leverages the absence of a page-table lock.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.9, < 3.10.76 |
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=Broken Link
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2015-0290.htmlThird Party AdvisoryVDB Entry
- http://rhn.redhat.com/errata/RHSA-2015-0694.htmlThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1198457Issue Tracking
- https://github.com/torvalds/linux/commit/ee53664bda169f519ce3c6a22d378f0b946c817Third Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=Broken Link
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2015-0290.htmlThird Party AdvisoryVDB Entry
- http://rhn.redhat.com/errata/RHSA-2015-0694.htmlThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1198457Issue Tracking
- https://github.com/torvalds/linux/commit/ee53664bda169f519ce3c6a22d378f0b946c817Third Party Advisory
FAQ
What is CVE-2014-8173?
CVE-2014-8173 is a vulnerability with a CVSS score of 7.2 (HIGH). The pmd_none_or_trans_huge_or_clear_bad function in include/asm-generic/pgtable.h in the Linux kernel before 3.13 on NUMA systems does not properly determine whether a Page Middle Directory (PMD) entr...
How severe is CVE-2014-8173?
CVE-2014-8173 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2014-8173?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.