CVE-2014-8173

NameCVE-2014-8173
DescriptionThe 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severityhigh (attack range: local)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)wheezy3.2.78-1fixed
wheezy (security)3.2.96-3fixed
jessie3.16.51-2fixed
jessie (security)3.16.51-3+deb8u1fixed
stretch4.9.65-3fixed
stretch (security)4.9.65-3+deb9u2fixed
buster4.14.13-1fixed
sid4.15.4-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)3.13.4-1high
linuxsourcewheezy(not affected)
linux-2.6source(unstable)(not affected)

Notes

[wheezy] - linux <not-affected> (Introduced in 3.10 with 1998cc048901)
- linux-2.6 <not-affected> (Introduced in 3.10 with 1998cc048901)
Upstream commit: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ee53664bda169f519ce3c6a22d378f0b946c8178 (v3.13-rc5)

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