linux-next/security/integrity
Roberto Sassu 4e8581eefe ima: pass filename to ima_rdwr_violation_check()
ima_rdwr_violation_check() retrieves the full path of a measured file by
calling ima_d_path(). If process_measurement() calls this function, it
reuses the pointer and passes it to the functions to measure/appraise/audit
an accessed file.

After commit bc15ed663e ("ima: fix ima_d_path() possible race with
rename"), ima_d_path() first tries to retrieve the full path by calling
d_absolute_path() and, if there is an error, copies the dentry name to the
buffer passed as argument.

However, ima_rdwr_violation_check() passes to ima_d_path() the pointer of a
local variable. process_measurement() might be reusing the pointer to an
area in the stack which may have been already overwritten after
ima_rdwr_violation_check() returned.

Correct this issue by passing to ima_rdwr_violation_check() the pointer of
a buffer declared in process_measurement().

Fixes: bc15ed663e ("ima: fix ima_d_path() possible race with rename")
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2017-12-18 09:43:48 -05:00
..
evm EVM: Add support for portable signature format 2017-12-11 17:20:39 -05:00
ima ima: pass filename to ima_rdwr_violation_check() 2017-12-18 09:43:48 -05:00
digsig_asymmetric.c integrity: Small code improvements 2017-06-21 14:37:12 -04:00
digsig.c integrity: use kernel_read_file_from_path() to read x509 certs 2017-11-08 15:16:36 -05:00
iint.c ima: re-introduce own integrity cache lock 2017-12-11 17:20:47 -05:00
integrity_audit.c Merge git://git.infradead.org/users/eparis/audit 2014-04-12 12:38:53 -07:00
integrity.h ima: support new "hash" and "dont_hash" policy actions 2017-12-18 09:43:38 -05:00
Kconfig security: integrity: Remove select to deleted option PUBLIC_KEY_ALGO_RSA 2016-04-12 19:54:58 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00