Detections
Analytics
CVE-2018-18690
medium
Description
In the Linux kernel before 4.17, a local attacker able to set attributes on an xfs filesystem could make this filesystem non-operational until the next mount by triggering an unchecked error condition during an xfs attribute change, because xfs_attr_shortform_addname in fs/xfs/libxfs/xfs_attr.c mishandles ATTR_REPLACE operations with conversion of an attr from short to long form.
References
https://usn.ubuntu.com/3849-2/
https://usn.ubuntu.com/3849-1/
https://usn.ubuntu.com/3848-2/
https://usn.ubuntu.com/3848-1/
https://usn.ubuntu.com/3847-3/
https://usn.ubuntu.com/3847-2/
https://usn.ubuntu.com/3847-1/
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
https://github.com/torvalds/linux/commit/7b38460dc8e4eafba06c78f8e37099d3b34d473c
https://bugzilla.suse.com/show_bug.cgi?id=1105025
https://bugzilla.kernel.org/show_bug.cgi?id=199119