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Florian Weimer db3476aff1 libio: Implement vtable verification [BZ #20191] 
This commit puts all libio vtables in a dedicated, read-only ELF
section, so that they are consecutive in memory.  Before any indirect
jump, the vtable pointer is checked against the section boundaries,
and the process is terminated if the vtable pointer does not fall into
the special ELF section.

To enable backwards compatibility, a special flag variable
(_IO_accept_foreign_vtables), protected by the pointer guard, avoids
process termination if libio stream object constructor functions have
been called earlier.  Such constructor functions are called by the GCC
2.95 libstdc++ library, and this mechanism ensures compatibility with
old binaries.  Existing callers inside glibc of these functions are
adjusted to call the original functions, not the wrappers which enable
vtable compatiblity.

The compatibility mechanism is used to enable passing FILE * objects
across a static dlopen boundary, too.
 		2016-06-23 20:01:52 +02:00
..
Depend * stdlib/bits/stdlib.h: New file. 2005-07-13 06:09:58 +00:00
Makefile Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
Versions Move getlogin_r_chk to login/ subdir. 2013-05-06 15:58:44 -07:00
asprintf_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
backtrace-tst.c Add #include <stdint.h> for uint[32|64]_t usage (except installed headers). 2013-05-16 11:32:54 -05:00
backtrace.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
backtracesyms.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
backtracesymsfd.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
catchsegv.sh Make shebang interpreter directives consistent 2016-01-07 04:03:21 -05:00
chk_fail.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
confstr_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
dprintf_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
execinfo.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
fdelt_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
fgets_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
fgets_u_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
fgetws_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
fgetws_u_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
fortify_fail.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
fprintf_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
fread_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
fread_u_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
fwprintf_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
getcwd_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
getdomainname_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
getgroups_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
gethostname_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
gets_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
getwd_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
longjmp_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
mbsnrtowcs_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
mbsrtowcs_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
mbstowcs_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
memcpy_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
memmove_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
mempcpy_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
memset_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
noophooks.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
obprintf_chk.c libio: Implement vtable verification [BZ #20191] 2016-06-23 20:01:52 +02:00
pcprofile.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
pcprofiledump.c Update copyright dates not handled by scripts/update-copyrights. 2016-01-04 16:26:30 +00:00
poll_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
ppoll_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
pread64_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
pread_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
printf_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
read_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
readlink_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
readlinkat_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
readonly-area.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
realpath_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
recv_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
recvfrom_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
segfault.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
snprintf_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
sprintf_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
stack_chk_fail.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
stack_chk_fail_local.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
stpcpy_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
stpncpy_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
strcat_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
strcpy_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
strncat_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
strncpy_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
swprintf_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
test-stpcpy_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
test-strcpy_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
tst-backtrace.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
tst-backtrace2.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
tst-backtrace3.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
tst-backtrace4.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
tst-backtrace5.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
tst-backtrace6.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
tst-chk1.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
tst-chk2.c 2004-10-15 Jakub Jelinek <jakub@redhat.com> 2004-10-18 04:17:19 +00:00
tst-chk3.c 2004-10-15 Jakub Jelinek <jakub@redhat.com> 2004-10-18 04:17:19 +00:00
tst-chk4.cc * misc/sys/cdefs.h (__va_arg_pack): Define for GCC 4.3+. 2007-09-15 02:38:04 +00:00
tst-chk5.cc * misc/sys/cdefs.h (__va_arg_pack): Define for GCC 4.3+. 2007-09-15 02:38:04 +00:00
tst-chk6.cc * misc/sys/cdefs.h (__va_arg_pack): Define for GCC 4.3+. 2007-09-15 02:38:04 +00:00
tst-lfschk1.c * posix/bits/unistd.h (pread) [__USE_FILE_OFFSET64]: Use __off64_t 2005-03-20 16:51:05 +00:00
tst-lfschk2.c * posix/bits/unistd.h (pread) [__USE_FILE_OFFSET64]: Use __off64_t 2005-03-20 16:51:05 +00:00
tst-lfschk3.c * posix/bits/unistd.h (pread) [__USE_FILE_OFFSET64]: Use __off64_t 2005-03-20 16:51:05 +00:00
tst-lfschk4.cc * misc/sys/cdefs.h (__va_arg_pack): Define for GCC 4.3+. 2007-09-15 02:38:04 +00:00
tst-lfschk5.cc * misc/sys/cdefs.h (__va_arg_pack): Define for GCC 4.3+. 2007-09-15 02:38:04 +00:00
tst-lfschk6.cc * misc/sys/cdefs.h (__va_arg_pack): Define for GCC 4.3+. 2007-09-15 02:38:04 +00:00
tst-longjmp_chk.c tests: unify fortification handler logic 2014-02-08 06:58:43 -05:00
tst-longjmp_chk2.c test-skeleton.c: Add write_message function 2016-06-23 11:00:36 +02:00
tst-longjmp_chk3.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
ttyname_r_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
vasprintf_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
vdprintf_chk.c libio: Implement vtable verification [BZ #20191] 2016-06-23 20:01:52 +02:00
vfprintf_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
vfwprintf_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
vprintf_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
vsnprintf_chk.c libio: Implement vtable verification [BZ #20191] 2016-06-23 20:01:52 +02:00
vsprintf_chk.c libio: Implement vtable verification [BZ #20191] 2016-06-23 20:01:52 +02:00
vswprintf_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
vwprintf_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
warning-nop.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wcpcpy_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wcpncpy_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wcrtomb_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wcscat_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wcscpy_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wcsncat_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
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wcsnrtombs_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wcsrtombs_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wcstombs_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wctomb_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wmemcpy_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wmemmove_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wmempcpy_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wmemset_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wprintf_chk.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
xtrace.sh Update copyright dates not handled by scripts/update-copyrights. 2016-01-04 16:26:30 +00:00