DescriptionThe ext4_group_add function in fs/ext4/resize.c in the Linux kernel 2.6.27 before and 2.6.28 before does not properly initialize the group descriptor during a resize (aka resize2fs) operation, which might allow local users to cause a denial of service (OOPS) by arranging for crafted values to be present in available memory.
SourceCVE (at NVD; oss-sec, fulldisc, OSVDB, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, web search, more)
ReferencesDSA-1749-1, DSA-1787-1
NVD severitymedium (attack range: local)
Debian/oldoldstablenot vulnerable.
Debian/oldstablenot known to be vulnerable.
Debian/stablenot known to be vulnerable.
Debian/testingnot known to be vulnerable.
Debian/unstablenot known to be vulnerable.

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux-2.6 (PTS)squeeze, squeeze (security)2.6.32-48squeeze6fixed
squeeze (lts)2.6.32-48squeeze16fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linux-2.6sourceetch(not affected)


[etch] - linux-2.6 <not-affected> (ext4 not yet present)
Since the feature is experimental until 2.6.27, I don't think we need to fix this

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