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freebsd-dev/sys/fs
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Pedro F. Giffuni 771ec59bb7 ext2fs: Add some extra consistency checks for the superblock. 
Maliciously formed, or badly corrupted, filesystems can cause kernel
panics.  In general, such acts of foot-shooting can only be accomplished
by root, but in a world with VM images that is  moving towards automated
mounts it is important to have some form of prevention.

Reported by: Christopher Krah, Thomas Barabosch, and Jan-Niclas Hilgert
of Fraunhofer FKIE.
Incidentaly this should also fix a memory corruption issue reported by
Dr Silvio Cesare of InfoSect.

Huge thanks to all reseachers for making us aware of the issue.

admbug:		872, 891
Reviewed by:	fsu
Obtained from:	NetBSD (with minor changes)
MFC after:	3 days
2019-01-25 22:22:29 +00:00
..
autofs Ensure that directory entry padding bytes are zeroed. 2018-11-23 22:24:59 +00:00
cd9660 Ensure that directory entry padding bytes are zeroed. 2018-11-23 22:24:59 +00:00
cuse Use NULL for SYSINIT's last arg, which is a pointer type 2018-05-18 17:58:09 +00:00
deadfs sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
devfs Ensure that directory entry padding bytes are zeroed. 2018-11-23 22:24:59 +00:00
ext2fs ext2fs: Add some extra consistency checks for the superblock. 2019-01-25 22:22:29 +00:00
fdescfs Ensure that directory entry padding bytes are zeroed. 2018-11-23 22:24:59 +00:00
fifofs Rework pathconf handling for FIFOs. 2017-12-19 22:39:05 +00:00
fuse Allocate pager bufs from UMA instead of 80-ish mutex protected linked list. 2019-01-15 01:02:16 +00:00
msdosfs Fix clobbering of the fatchain cache for clustered i/o's when full 2018-12-21 21:17:45 +00:00
nandfs Remove unused argument to priv_check_cred. 2018-12-11 19:32:16 +00:00
nfs Remove unused argument to priv_check_cred. 2018-12-11 19:32:16 +00:00
nfsclient Allocate pager bufs from UMA instead of 80-ish mutex protected linked list. 2019-01-15 01:02:16 +00:00
nfsserver nfs: Zero the buffers exported by NFSSVC_DUMPCLIENTS and DUMPLOCKS. 2019-01-21 23:54:33 +00:00
nullfs Make it easier for filesystems to count themselves as jail-enabled, 2018-05-04 20:54:27 +00:00
procfs Plug memory disclosures via ptrace(2). 2018-12-03 20:54:17 +00:00
pseudofs Ensure that directory entry padding bytes are zeroed. 2018-11-23 22:24:59 +00:00
smbfs [smbfs] Allow semicolon in mounts that support long names 2019-01-20 05:52:16 +00:00
tmpfs Remove unused argument to priv_check_cred. 2018-12-11 19:32:16 +00:00
udf Ensure that directory entry padding bytes are zeroed. 2018-11-23 22:24:59 +00:00
unionfs sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00