CVE-2015-8839

NameCVE-2015-8839
DescriptionMultiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
NVD severitylow (attack range: local)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)wheezy3.2.78-1vulnerable
wheezy (security)3.2.93-1vulnerable
jessie3.16.43-2+deb8u2vulnerable
jessie (security)3.16.43-2+deb8u5vulnerable
stretch4.9.30-2+deb9u2fixed
stretch (security)4.9.30-2+deb9u5fixed
buster, sid4.12.13-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)4.5.1-1low

Notes

https://git.kernel.org/linus/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b (v4.5-rc1)
https://git.kernel.org/linus/17048e8a083fec7ad841d88ef0812707fbc7e39f (v4.5-rc1)
https://git.kernel.org/linus/32ebffd3bbb4162da5ff88f9a35dd32d0a28ea70 (v4.5-rc1)
https://git.kernel.org/linus/011278485ecc3cd2a3954b5d4c73101d919bf1fa (v4.5-rc1)
https://bugzilla.suse.com/show_bug.cgi?id=972174

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