CVE-2014-8086

NameCVE-2014-8086
DescriptionRace condition in the ext4_file_write_iter function in fs/ext4/file.c in the Linux kernel through 3.17 allows local users to cause a denial of service (file unavailability) via a combination of a write action and an F_SETFL fcntl operation for the O_DIRECT flag.
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 severitymedium (attack range: local)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)jessie3.16.56-1+deb8u1fixed
jessie (security)3.16.59-1fixed
stretch4.9.110-1fixed
stretch (security)4.9.110-3+deb9u6fixed
buster, sid4.18.10-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)3.16.7-ckt2-1medium
linuxsourcewheezy(not affected)
linux-2.6source(unstable)(not affected)

Notes

[wheezy] - linux <not-affected> (Vulnerable code not present)
- linux-2.6 <not-affected> (Vulnerable code not present)
http://www.spinics.net/lists/linux-ext4/msg45683.html

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