CVE-2019-11833

NameCVE-2019-11833
Descriptionfs/ext4/extents.c in the Linux kernel through 5.1.2 does not zero out the unused memory region in the extent tree block, which might allow local users to obtain sensitive information by reading uninitialized data in the filesystem.
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)
ReferencesDLA-1823-1, DLA-1824-1, DSA-4465-1
NVD severitylow (attack range: local)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)jessie3.16.56-1+deb8u1vulnerable
jessie (security)3.16.68-2fixed
stretch4.9.168-1vulnerable
stretch (security)4.9.168-1+deb9u3fixed
buster4.19.37-3vulnerable
sid4.19.37-4fixed
linux-4.9 (PTS)jessie (security)4.9.168-1+deb9u3~deb8u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)4.19.37-4low
linuxsourcejessie3.16.68-2lowDLA-1823-1
linuxsourcestretch4.9.168-1+deb9u3lowDSA-4465-1
linux-4.9sourcejessie4.9.168-1+deb9u3~deb8u1lowDLA-1824-1

Notes

Fixed by: https://git.kernel.org/linus/592acbf16821288ecdc4192c47e3774a4c48bb64

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