linux/security
Mimi Zohar 2cd4737bc8 ima: prevent a file already mmap'ed write to be mmap'ed execute
The kernel calls deny_write_access() to prevent a file already opened
for write from being executed and also prevents files being executed
from being opened for write.  For some reason this does not extend to
files being mmap'ed execute.

From an IMA perspective, measuring/appraising the integrity of a file
being mmap'ed shared execute, without first making sure the file cannot
be modified, makes no sense.  This patch prevents files, in policy,
already mmap'ed shared write, from being mmap'ed execute.

Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
2019-06-04 16:47:30 -04:00
..
apparmor Merge branch 'work.icache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-07 10:57:05 -07:00
integrity ima: prevent a file already mmap'ed write to be mmap'ed execute 2019-06-04 16:47:30 -04:00
keys Merge branch 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2019-05-07 08:39:54 -07:00
loadpin LoadPin: Initialize as ordered LSM 2019-01-08 13:18:43 -08:00
safesetid LSM: fix return value check in safesetid_init_securityfs() 2019-02-12 10:59:22 -08:00
selinux Revert "selinux: do not report error on connect(AF_UNSPEC)" 2019-05-10 09:34:31 -07:00
smack Smack: Fix kbuild reported build error 2019-04-30 14:13:32 -07:00
tomoyo tomoyo: Don't emit WARNING: string while fuzzing testing. 2019-05-10 14:58:35 -07:00
yama Yama: mark function as static 2019-04-10 10:36:45 -07:00
commoncap.c audit/stable-5.1 PR 20190305 2019-03-07 12:20:11 -08:00
device_cgroup.c device_cgroup: fix RCU imbalance in error case 2019-03-19 10:46:15 -07:00
inode.c securityfs: switch to ->free_inode() 2019-05-01 22:43:26 -04:00
Kconfig compiler-based memory initialization 2019-05-07 12:44:49 -07:00
Kconfig.hardening security: Implement Clang's stack initialization 2019-04-24 14:00:56 -07:00
lsm_audit.c missing barriers in some of unix_sock ->addr and ->path accesses 2019-02-20 20:06:28 -08:00
Makefile LSM: add SafeSetID module that gates setid calls 2019-01-25 11:22:45 -08:00
min_addr.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
security.c Merge branch 'work.mount-syscalls' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-07 20:17:51 -07:00