CVE-2018-13093

NameCVE-2018-13093
DescriptionAn issue was discovered in fs/xfs/xfs_icache.c in the Linux kernel through 4.17.3. There is a NULL pointer dereference and panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted xfs image. This occurs because of a lack of proper validation that cached inodes are free during allocation.
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-1529-1, DLA-2114-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)stretch4.9.228-1fixed
stretch (security)4.9.210-1+deb9u1fixed
buster4.19.146-1fixed
buster (security)4.19.152-1fixed
bullseye5.8.14-1fixed
sid5.9.1-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcejessie3.16.59-1DLA-1529-1
linuxsourcestretch4.9.210-1
linuxsource(unstable)4.17.14-1
linux-4.9sourcejessie4.9.210-1~deb8u1DLA-2114-1

Notes

https://bugzilla.kernel.org/show_bug.cgi?id=199367
https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git/commit/?h=for-next&id=afca6c5b2595fc44383919fba740c194b0b76aff

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