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Mimi Zohar 867c202654 ima: fix add LSM rule bug ... If security_filter_rule_init() doesn't return a rule, then not everything is as fine as the return code implies. This bug only occurs when the LSM (eg. SELinux) is disabled at runtime. Adding an empty LSM rule causes ima_match_rules() to always succeed, ignoring any remaining rules. default IMA TCB policy: # PROC_SUPER_MAGIC dont_measure fsmagic=0x9fa0 # SYSFS_MAGIC dont_measure fsmagic=0x62656572 # DEBUGFS_MAGIC dont_measure fsmagic=0x64626720 # TMPFS_MAGIC dont_measure fsmagic=0x01021994 # SECURITYFS_MAGIC dont_measure fsmagic=0x73636673 < LSM specific rule > dont_measure obj_type=var_log_t measure func=BPRM_CHECK measure func=FILE_MMAP mask=MAY_EXEC measure func=FILE_CHECK mask=MAY_READ uid=0 Thus without the patch, with the boot parameters 'tcb selinux=0', adding the above 'dont_measure obj_type=var_log_t' rule to the default IMA TCB measurement policy, would result in nothing being measured. The patch prevents the default TCB policy from being replaced. Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Cc: James Morris <jmorris@namei.org> Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Cc: David Safford <safford@watson.ibm.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		14 years ago
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apparmor	APPARMOR: Fix memory leak of apparmor_init()	14 years ago
integrity/ima	ima: fix add LSM rule bug	14 years ago
keys	KEYS: Don't call up_write() if __key_link_begin() returns an error	14 years ago
selinux	capabilities/syslog: open code cap_syslog logic to fix build failure	14 years ago
smack	capabilities/syslog: open code cap_syslog logic to fix build failure	14 years ago
tomoyo	fs: take dcache_lock inside __d_path	14 years ago
Kconfig	Restrict unprivileged access to kernel syslog	14 years ago
Makefile	AppArmor: Enable configuring and building of the AppArmor security module	15 years ago
capability.c	capabilities/syslog: open code cap_syslog logic to fix build failure	14 years ago
commoncap.c	capabilities/syslog: open code cap_syslog logic to fix build failure	14 years ago
device_cgroup.c	Merge branch 'master' into next	15 years ago
inode.c	convert get_sb_single() users	14 years ago
lsm_audit.c	Merge branch 'master' into next	15 years ago
min_addr.c	mmap_min_addr check CAP_SYS_RAWIO only for write	15 years ago
security.c	capabilities/syslog: open code cap_syslog logic to fix build failure	14 years ago