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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-07-24 06:06:08 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-07-24 06:06:24 -0700 |
| commit | 422ff87c249ddc06701d096421db63343e4754be (patch) | |
| tree | e095970d350bffebdd21f9fa75a24494aeebbc47 /ChangeLog | |
| parent | 55703fcace89b53d7f41f7d85ede50571da2bcc8 (diff) | |
| download | glibc-422ff87c249ddc06701d096421db63343e4754be.zip glibc-422ff87c249ddc06701d096421db63343e4754be.tar.gz glibc-422ff87c249ddc06701d096421db63343e4754be.tar.bz2 | |
Avoid accessing corrupted stack from __stack_chk_fail [BZ #21752]
__libc_argv[0] points to address on stack and __libc_secure_getenv
accesses environment variables which are on stack. We should avoid
accessing stack when stack is corrupted.
This patch also renames function argument in __fortify_fail_abort
from do_backtrace to need_backtrace to avoid confusion with do_backtrace
from enum __libc_message_action.
[BZ #21752]
* debug/fortify_fail.c (__fortify_fail_abort): Don't pass down
__libc_argv[0] if we aren't doing backtrace. Rename do_backtrace
to need_backtrace.
* sysdeps/posix/libc_fatal.c (__libc_message): Don't call
__libc_secure_getenv if we aren't doing backtrace.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 9 |
1 files changed, 9 insertions, 0 deletions
@@ -1,3 +1,12 @@ +2017-07-24 H.J. Lu <hongjiu.lu@intel.com> + + [BZ #21752] + * debug/fortify_fail.c (__fortify_fail_abort): Don't pass down + __libc_argv[0] if we aren't doing backtrace. Rename do_backtrace + to need_backtrace. + * sysdeps/posix/libc_fatal.c (__libc_message): Don't call + __libc_secure_getenv if we aren't doing backtrace. + 2017-07-24 Andreas Schwab <schwab@suse.de> [BZ #21804] |