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Adhemerval Zanella b09073e631 arm: Remove wrong ldr from _dl_start_user (BZ 31339)
The commit 49d877a80b (arm: Remove
_dl_skip_args usage) removed the _SKIP_ARGS literal, which was
previously loader to r4 on loader _start.  However, the cleanup did not
remove the following 'ldr r4, [sl, r4]' on _dl_start_user, used to check
to skip the arguments after ld self-relocations.

In my testing, the kernel initially set r4 to 0, which makes the
ldr instruction just read the _GLOBAL_OFFSET_TABLE_.  However, since r4
is a callee-saved register; a different runtime might not zero
initialize it and thus trigger an invalid memory access.

Checked on arm-linux-gnu.

Reported-by: Adrian Ratiu <adrian.ratiu@collabora.com>
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
(cherry picked from commit 1e25112dc0)
2024-02-05 15:43:33 -03:00
ChangeLog.old Create ChangeLog.old/ChangeLog.27 2023-07-30 21:45:27 +02:00
argp
assert
benchtests benchtests: fix warn unused result 2023-06-22 00:21:19 -04:00
bits
catgets
conform
crypt
csu
ctype
debug misc/bits/select2.h: Clearly separate declaration from definitions 2023-07-05 16:59:48 +02:00
dirent tests: replace read by xread 2023-06-19 09:14:56 -04:00
dlfcn
elf elf: Add TLS modid reuse test for bug 29039 2023-12-22 14:29:47 +00:00
gmon
gnulib
grp
gshadow
hesiod
htl
hurd
iconv iconv: restore verbosity with unrecognized encoding names (bug 30694) 2023-09-15 23:55:01 +02:00
iconvdata
include Revert "elf: Move l_init_called_next to old place of l_text_end in link map" 2023-10-19 09:17:38 +02:00
inet nscd: Do not rebuild getaddrinfo (bug 30709) 2023-08-11 10:55:10 +02:00
intl
io io: Fix record locking contants for powerpc64 with __USE_FILE_OFFSET64 2023-09-07 22:45:43 +02:00
libio libio: Check remaining buffer size in _IO_wdo_write (bug 31183) 2024-01-02 14:37:42 +01:00
locale
localedata
login unistd: Avoid PLT entries with _FORTIFY_SOURCE 2023-07-05 16:59:48 +02:00
mach
malloc malloc: Remove bin scanning from memalign (bug 30723) 2023-08-22 16:33:35 +02:00
manual manual/jobs.texi: Add missing @item EPERM for getpgid 2023-09-15 23:57:43 +02:00
math Stop applying a GCC-specific workaround on clang [BZ #30550] 2023-06-30 19:11:11 -03:00
mathvec
misc syslog: Fix integer overflow in __vsyslog_internal (CVE-2023-6780) 2024-01-30 15:55:43 +01:00
nis
nptl nptl: Unconditionally use a 32-byte rseq area 2023-07-21 16:18:18 +02:00
nptl_db
nscd nscd: Do not rebuild getaddrinfo (bug 30709) 2023-08-11 10:55:10 +02:00
nss Fix leak in getaddrinfo introduced by the fix for CVE-2023-4806 [BZ #30843] 2023-09-26 10:14:37 -04:00
po translations: update cs, nl, vi 2023-07-27 00:21:13 +02:00
posix posix: Fix test-errno build with fortify enable 2023-07-26 09:45:46 -03:00
pwd
resolv CVE-2023-4527: Stack read overflow with large TCP responses in no-aaaa mode 2023-09-13 14:13:36 +02:00
resource
rt Exclude routines from fortification 2023-07-05 16:59:48 +02:00
scripts scripts: Fix fortify checks if compiler does not support _FORTIFY_SOURCE=3 2023-07-20 17:58:26 -03:00
setjmp Exclude routines from fortification 2023-07-05 16:59:48 +02:00
shadow
signal
socket Exclude routines from fortification 2023-07-05 16:59:48 +02:00
soft-fp
stdio-common vfscanf-internal: Remove potentially unbounded allocas 2023-07-06 10:46:46 -03:00
stdlib stdlib: Improve tst-realpath compatibility with source fortification 2023-08-06 18:13:38 +02:00
string string: Fix tester build with fortify enable with gcc < 12 2023-09-15 23:56:26 +02:00
sunrpc sunrpc: Fix netname build with older gcc 2023-07-26 09:45:22 -03:00
support support: Build with exceptions and asynchronous unwind tables [BZ #30587] 2023-07-01 13:29:53 +00:00
sysdeps arm: Remove wrong ldr from _dl_start_user (BZ 31339) 2024-02-05 15:43:33 -03:00
sysvipc
termios
time Add checks for wday, yday and new date formats 2023-06-30 11:25:39 +02:00
timezone Call "CST" a time zone abbreviation, not a name 2023-06-22 13:49:09 -07:00
wcsmbs vfscanf-internal: Remove potentially unbounded allocas 2023-07-06 10:46:46 -03:00
wctype
.clang-format
.gitattributes
.gitignore
CONTRIBUTED-BY
COPYING
COPYING.LIB
INSTALL INSTALL: regenerate 2023-07-30 21:16:02 +02:00
LICENSES
MAINTAINERS
Makeconfig Allow glibc to be built with _FORTIFY_SOURCE 2023-07-05 16:59:34 +02:00
Makefile scripts: Fix fortify checks if compiler does not support _FORTIFY_SOURCE=3 2023-07-20 17:58:26 -03:00
Makefile.help
Makefile.in
Makerules Fix tests-clean Makefile target (bug 30545) 2023-06-26 10:37:25 -03:00
NEWS libio: Check remaining buffer size in _IO_wdo_write (bug 31183) 2024-01-02 14:37:42 +01:00
README
Rules scripts: Fix fortify checks if compiler does not support _FORTIFY_SOURCE=3 2023-07-20 17:58:26 -03:00
SECURITY.md
SHARED-FILES
abi-tags
aclocal.m4 configure: Use autoconf 2.71 2023-07-17 10:08:10 -04:00
config.h.in LoongArch: config: Added HAVE_LOONGARCH_VEC_ASM. 2023-07-11 10:56:01 +08:00
config.make.in Allow glibc to be built with _FORTIFY_SOURCE 2023-07-05 16:59:34 +02:00
configure scripts: Fix fortify checks if compiler does not support _FORTIFY_SOURCE=3 2023-07-20 17:58:26 -03:00
configure.ac scripts: Fix fortify checks if compiler does not support _FORTIFY_SOURCE=3 2023-07-20 17:58:26 -03:00
extra-lib.mk
gen-locales.mk
libc-abis
libof-iterator.mk
o-iterator.mk
shlib-versions
test-skeleton.c
version.h Increase version numbers 2023-07-30 21:35:28 +02:00

README

This directory contains the sources of the GNU C Library.
See the file "version.h" for what release version you have.

The GNU C Library is the standard system C library for all GNU systems,
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