kernel-fxtec-pro1x/security/smack
Konstantin Khlebnikov b862e561ba Smack: handle zero-length security labels without panic
Zero-length security labels are invalid but kernel should handle them.

This patch fixes kernel panic after setting zero-length security labels:
# attr -S -s "SMACK64" -V "" file

And after writing zero-length string into smackfs files syslog and onlycp:
# python -c 'import os; os.write(1, "")' > /smack/syslog

The problem is caused by brain-damaged logic in function smk_parse_smack()
which takes pointer to buffer and its length but if length below or equal zero
it thinks that the buffer is zero-terminated. Unfortunately callers of this
function are widely used and proper fix requires serious refactoring.

Signed-off-by: Konstantin Khlebnikov <k.khlebnikov@samsung.com>
2014-08-08 14:51:07 -07:00
..
Kconfig Smack: use select not depends in Kconfig 2012-12-14 10:57:10 -08:00
Makefile
smack.h Smack: bidirectional UDS connect check 2014-04-11 14:35:28 -07:00
smack_access.c Merge branch 'next' of git://git.infradead.org/users/pcmoore/selinux into next 2014-08-02 22:58:02 +10:00
smack_lsm.c Smack: handle zero-length security labels without panic 2014-08-08 14:51:07 -07:00
smackfs.c Smack: handle zero-length security labels without panic 2014-08-08 14:51:07 -07:00