Florian Weimer 52a01100ad elf: Remove ad-hoc restrictions on dlopen callers [BZ #22787] ... This looks like a post-exploitation hardening measure: If an attacker is able to redirect execution flow, they could use that to load a DSO which contains additional code (or perhaps make the stack executable). However, the checks are not in the correct place to be effective: If they are performed before the critical operation, an attacker with sufficient control over execution flow could simply jump directly to the code which performs the operation, bypassing the check. The check would have to be executed unconditionally after the operation and terminate the process in case a caller violation was detected. Furthermore, in _dl_check_caller, there was a fallback reading global writable data (GL(dl_rtld_map).l_map_start and GL(dl_rtld_map).l_text_end), which could conceivably be targeted by an attacker to disable the check, too. Other critical functions (such as system) remain completely unprotected, so the value of these additional checks does not appear that large. Therefore this commit removes this functionality.		2018-02-21 10:37:22 +01:00
..
net	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
netinet	generic if_ether.h: Fix build	2018-01-19 01:51:10 +01:00
nfs	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
sys	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
_G_config.h	Post-cleanup 2: minimize _G_config.h.	2018-02-07 10:10:32 -05:00
_itoa.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
a.out.h
abort-instr.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
aio_misc.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
allocalim.h
asm-syntax.h
atomic-machine.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
c++-types.data	Add placeholder c++-types.data and *.abilist files.	2015-02-13 15:41:34 -08:00
confstr.h
device-nrs.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dirstream.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dl-cache.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dl-dtprocnum.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dl-dtv.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dl-fcntl.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dl-fileid.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dl-fptr.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dl-hash.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dl-irel.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dl-librecon.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dl-lookupcfg.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dl-machine.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dl-mman.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dl-osinfo.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dl-procinfo.c
dl-procinfo.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dl-procruntime.c	ld.so: Add architecture specific fields	2017-11-13 08:02:52 -08:00
dl-sysdep.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dl-tls.h
dl-unistd.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
dwarf2.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
elide.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
eloop-threshold.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
entry.h
errqueue.h
exit-thread.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
fd_to_filename.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
fips-private.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
fix-fp-int-compare-invalid.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
fix-fp-int-convert-overflow.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
fix-int-fp-convert-zero.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
float128-abi.h	Move some float128 symbol version definitions.	2017-10-16 22:04:42 +00:00
fork.h
fpu_control.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
frame.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
framestate.c	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
gcc-compat.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
gccframe.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
get-rounding-mode.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
gmp-mparam.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
hp-timing-common.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
hp-timing.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
ifreq.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
ifunc-init.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
ifunc-sel.h	Do not stack-protect ifunc resolvers [BZ #7065]	2016-12-26 10:08:41 +01:00
intr-msg.h
inttypes.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
ld.abilist	Simplify the abilist format	2015-11-06 13:58:53 +01:00
ldbl-classify-compat.h	Move LDBL_CLASSIFY_COMPAT to its own header.	2018-02-01 21:01:00 +00:00
ldconfig.h	Add support for the RISC-V-specific ELF flags	2018-01-25 10:06:19 -08:00
ldsodefs.h	elf: Remove ad-hoc restrictions on dlopen callers [BZ #22787]	2018-02-21 10:37:22 +01:00
libanl.abilist	Simplify the abilist format	2015-11-06 13:58:53 +01:00
libBrokenLocale.abilist	Simplify the abilist format	2015-11-06 13:58:53 +01:00
libc-lock.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
libc-mmap.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
libc-start.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
libc-tsd.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
libc.abilist	Simplify the abilist format	2015-11-06 13:58:53 +01:00
libcidn.abilist	Add missed zero length files in previous abilist commit.	2012-04-28 15:38:24 -04:00
libcrypt.abilist	Simplify the abilist format	2015-11-06 13:58:53 +01:00
libdl.abilist	Simplify the abilist format	2015-11-06 13:58:53 +01:00
libm-alias-double.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
libm-alias-float128.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
libm-alias-float.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
libm-alias-ldouble.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
libm-test-ulps
libm-test-ulps-name	Do not hardcode platform names in manual/libm-err-tab.pl (bug 14139).	2016-11-04 16:49:06 +00:00
libm.abilist	Simplify the abilist format	2015-11-06 13:58:53 +01:00
libnsl.abilist	Add placeholder libnsl.abilist and libutil.abilist files	2016-03-07 00:49:36 +01:00
libnss_compat.abilist	Add missed zero length files in previous abilist commit.	2012-04-28 15:38:24 -04:00
libnss_db.abilist	Add missed zero length files in previous abilist commit.	2012-04-28 15:38:24 -04:00
libnss_dns.abilist	Add missed zero length files in previous abilist commit.	2012-04-28 15:38:24 -04:00
libnss_files.abilist	Add missed zero length files in previous abilist commit.	2012-04-28 15:38:24 -04:00
libnss_hesiod.abilist	Add missed zero length files in previous abilist commit.	2012-04-28 15:38:24 -04:00
libnss_nis.abilist	Add missed zero length files in previous abilist commit.	2012-04-28 15:38:24 -04:00
libnss_nisplus.abilist	Add missed zero length files in previous abilist commit.	2012-04-28 15:38:24 -04:00
libpthread.abilist	Simplify the abilist format	2015-11-06 13:58:53 +01:00
libresolv.abilist	Simplify the abilist format	2015-11-06 13:58:53 +01:00
librt.abilist	Simplify the abilist format	2015-11-06 13:58:53 +01:00
libutil.abilist	Add placeholder libnsl.abilist and libutil.abilist files	2016-03-07 00:49:36 +01:00
link_map.h	ld.so: Add architecture specific fields	2017-11-13 08:02:52 -08:00
linkmap.h	Rename bits/linkmap.h to linkmap.h (bug 14912).	2015-09-04 19:44:27 +00:00
local-setxid.h	* sysdeps/posix/spawni.c (__spawni): Use local_seteuid and	2006-06-04 22:17:06 +00:00
localplt.data	ld.so: Introduce struct dl_exception	2017-08-10 16:54:57 +02:00
machine-gmon.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
machine-lock.h	hurd: take __USE_EXTERN_INLINES into account and restrict inlines	2018-01-28 18:46:23 +01:00
machine-sp.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
Makefile	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
malloc-alignment.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
malloc-machine.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
malloc-sysdep.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
math_ldbl_opt.h	* math/math.h [__NO_LONG_DOUBLE_MATH] (__nldbl_nexttowardf): New	2006-01-14 12:10:44 +00:00
math_ldbl.h	Allow direct use of math_ldbl.h in testsuite.	2017-02-25 10:40:48 -05:00
math_private_calls.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
math_private.h	Remove slow paths from exp	2018-02-12 11:33:33 +00:00
math-tests-arch.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
math-tests.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
math-type-macros-double.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
math-type-macros-float128.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
math-type-macros-float.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
math-type-macros-ldouble.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
math-type-macros.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
memcopy.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
memusage.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
nan-high-order-bit.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
not-cancel.h	hurd: fix warnings	2018-01-27 16:45:10 +01:00
not-errno.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
nscd-types.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
pagecopy.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
paths.h	generic paths.h: remove old paths from _PATH_STDPATH	2012-11-04 10:11:39 +01:00
profil-counter.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
pty-private.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
register-dump.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
rtld-lowlevel.h	Jakub Jelinek <jakub@redhat.com>	2006-10-10 00:51:29 +00:00
safe-fatal.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
setjmpP.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
sigcontextinfo.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
siglist.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
sigset-cvt-mask.h	hurd: fix warning	2018-01-27 16:45:55 +01:00
sigsetops.h	hurd: fix warnings	2018-01-27 16:47:36 +01:00
stackguard-macros.h	BZ #15754: Fix test case for ARM.	2013-09-23 01:44:38 -04:00
stackinfo.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
startup.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
stdint.h	Define char16_t, char32_t consistently with uint_least16_t, uint_least32_t (bug 17979).	2018-02-07 20:33:55 +00:00
stdio-lock.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
string_private.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
symbol-hacks.h	PLT avoidance for __stack_chk_fail [BZ #7065]	2016-12-26 10:11:05 +01:00
sysdep-cancel.h	* elf/dl-sym.c (do_sym): Use RTLD_SINGLE_THREAD_P.	2006-10-29 21:46:32 +00:00
sysdep.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
thread_state.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
tininess.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
tls-macros.h	* elf/tls-macros.h: #include_next <tls-macros.h> to get a sysdeps	2005-03-13 09:09:05 +00:00
tls.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
tst-audit.h	Move testsuite audit definitions to sysdeps tst-audit.h files.	2012-07-26 11:29:07 +00:00
tst-stack-align.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
unsecvars.h	Ignore and remove LD_HWCAP_MASK for AT_SECURE programs (bug #21209)	2017-03-07 20:52:04 +05:30
unwind-dw2-fde-glibc.c	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
unwind-dw2-fde.c	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
unwind-dw2-fde.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
unwind-dw2.c	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
unwind-pe.c	Update.	2004-03-10 10:04:19 +00:00
unwind-pe.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
unwind-resume.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
unwind.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
utmp-equal.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00