CVE-2014-3122

NameCVE-2014-3122
DescriptionThe try_to_unmap_cluster function in mm/rmap.c in the Linux kernel before 3.14.3 does not properly consider which pages must be locked, which allows local users to cause a denial of service (system crash) by triggering a memory-usage pattern that requires removal of page-table mappings.
SourceCVE (at NVD; oss-sec, fulldisc, OSVDB, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, more)
ReferencesDLA-0015-1, DSA-2926-1
NVD severitymedium (attack range: local)
Debian Bugs747326
Debian/oldstablepackage linux-2.6 is vulnerable.
Debian/stablenot vulnerable.
Debian/testingnot vulnerable.
Debian/unstablenot vulnerable.

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)wheezy3.2.65-1fixed
wheezy (security)3.2.65-1+deb7u2fixed
jessie, sid3.16.7-ckt7-1fixed
linux-2.6 (PTS)squeeze (security), squeeze2.6.32-48squeeze6vulnerable
squeeze (lts)2.6.32-48squeeze11fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)3.14.4-1medium747326
linuxsourcewheezy3.2.57-3+deb7u1mediumDSA-2926-1
linux-2.6source(unstable)(unfixed)medium
linux-2.6sourcesqueeze2.6.32-48squeeze8medium

Notes

Introduced by https://git.kernel.org/linus/b291f000393f5a0b679012b39d79fbc85c018233
Fixed by https://git.kernel.org/linus/57e68e9cd65b4b8eb4045a1e0d0746458502554c (v3.15-rc1)

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