The xfs_bmap_extents_to_btree function in fs/xfs/libxfs/xfs_bmap.c in the Linux kernel through 4.16.3 allows local users to cause a denial of service (xfs_bmapi_write NULL pointer dereference) via a crafted xfs image.
The product dereferences a pointer that it expects to be valid but is NULL.
Link | Tags |
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https://usn.ubuntu.com/3752-2/ | third party advisory vendor advisory |
https://usn.ubuntu.com/3752-3/ | third party advisory vendor advisory |
http://www.securityfocus.com/bid/103959 | vdb entry third party advisory |
https://www.spinics.net/lists/linux-xfs/msg17254.html | third party advisory patch |
https://www.debian.org/security/2018/dsa-4188 | third party advisory vendor advisory |
https://usn.ubuntu.com/3754-1/ | third party advisory vendor advisory |
https://bugzilla.kernel.org/show_bug.cgi?id=199423 | issue tracking exploit vendor advisory |
https://usn.ubuntu.com/3752-1/ | third party advisory vendor advisory |
https://usn.ubuntu.com/4486-1/ | vendor advisory |