5.6 Medium
AI Score
Confidence
High
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
5.3%
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.
CPE | Name | Operator | Version |
---|---|---|---|
linux:linux_kernel | linux linux kernel | lt | 3.12.43 |
linux:linux_kernel | linux linux kernel | lt | 3.10.76 |
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ee53664bda169f519ce3c6a22d378f0b946c8178
lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html
rhn.redhat.com/errata/RHSA-2015-0290.html
rhn.redhat.com/errata/RHSA-2015-0694.html
bugzilla.redhat.com/show_bug.cgi?id=1198457
github.com/torvalds/linux/commit/ee53664bda169f519ce3c6a22d378f0b946c8178