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H.J. Lu 11483721d6
x86-64: Add GLIBC_ABI_DT_X86_64_PLT [BZ #33212]
When the linker -z mark-plt option is used to add DT_X86_64_PLT,
DT_X86_64_PLTSZ and DT_X86_64_PLTENT, the r_addend field of the
R_X86_64_JUMP_SLOT relocation stores the offset of the indirect
branch instruction.  However, glibc versions without the commit:

commit f8587a6189
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri May 20 19:21:48 2022 -0700

    x86-64: Ignore r_addend for R_X86_64_GLOB_DAT/R_X86_64_JUMP_SLOT

    According to x86-64 psABI, r_addend should be ignored for R_X86_64_GLOB_DAT
    and R_X86_64_JUMP_SLOT.  Since linkers always set their r_addends to 0, we
    can ignore their r_addends.

    Reviewed-by: Fangrui Song <maskray@google.com>

won't ignore the r_addend value in the R_X86_64_JUMP_SLOT relocation.
Such programs and shared libraries will fail at run-time randomly.

Add GLIBC_ABI_DT_X86_64_PLT version to indicate that glibc is compatible
with DT_X86_64_PLT.

The linker can add the glibc GLIBC_ABI_DT_X86_64_PLT version dependency
whenever -z mark-plt is passed to the linker.  The resulting programs and
shared libraries will fail to load at run-time against libc.so without the
GLIBC_ABI_DT_X86_64_PLT version, instead of fail randomly.

This fixes BZ #33212.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Sam James <sam@gentoo.org>
(cherry picked from commit 399384e0c8)
2025-08-18 01:06:14 +01:00
ChangeLog.old Update ChangeLog.old/ChangeLog.23. 2021-08-01 21:33:43 -04:00
argp
assert assert: Add test for CVE-2025-0395 2025-02-13 13:52:05 -05:00
benchtests tests: use xmalloc to allocate implementation array 2021-07-28 17:45:19 +05:30
bits login: structs utmp, utmpx, lastlog _TIME_BITS independence (bug 30701) 2024-05-02 22:04:35 +02:00
catgets catgets: Use 64 bit stat for __open_catalog (BZ# 29211) 2022-06-01 13:36:38 -03:00
conform Allow #pragma GCC in headers in conformtest 2022-11-11 16:52:03 +01:00
crypt
csu csu: Implement and use _dl_early_allocate during static startup 2022-05-19 12:13:53 +02:00
ctype
debug debug: Mark libSegFault.so as NODELETE 2023-07-21 16:37:42 +02:00
dirent
dlfcn dlfcn: Pass caller pointer to static dlopen implementation (bug 29446) 2022-08-04 20:57:18 +02:00
elf Fix error reporting (false negatives) in SGID tests 2025-06-20 12:13:14 +02:00
gmon gmon: Revert addition of tunables to preserve GLIBC_PRIVATE ABI 2023-04-28 18:52:41 +02:00
gnulib
grp
gshadow gshadow: Matching sgetsgent, sgetsgent_r ERANGE handling (bug 30151) 2023-04-24 15:59:58 +02:00
hesiod
htl htl: Let libc call __pthread_mutex_{,try,un}lock 2021-07-13 23:36:58 +02:00
hurd
iconv gconv: Use 64-bit interfaces in gconv_parseconfdir (bug 29583) 2022-09-21 13:13:02 +02:00
iconvdata iconv: ISO-2022-CN-EXT: fix out-of-bound writes when writing escape sequence (CVE-2024-2961) 2024-04-17 14:04:21 -03:00
include malloc: Use __get_nprocs on arena_get2 (BZ 30945) 2024-02-12 10:20:44 -03:00
inet inet: Use 64 bit stat for ruserpass (BZ# 29210) 2022-06-01 13:34:51 -03:00
intl intl: Avoid -Wuse-after-free [BZ #26779] 2023-01-11 13:29:41 +01:00
io io: Fix use-after-free in ftw [BZ #26779] 2022-11-11 16:55:09 +01:00
libio libio: Attempt wide backup free only for non-legacy code 2024-09-11 09:28:15 +02:00
locale localedef: Handle symbolic links when generating locale-archive 2022-03-03 11:58:03 +01:00
localedata support: Add FAIL test failure helper 2024-08-29 21:04:17 -04:00
login login: structs utmp, utmpx, lastlog _TIME_BITS independence (bug 30701) 2024-05-02 22:04:35 +02:00
mach
malloc malloc: Exit early on test failure in tst-realloc 2024-05-02 22:02:33 +02:00
manual misc: Add support for Linux uio.h RWF_NOAPPEND flag 2025-01-12 18:12:56 -08:00
math support: Add FAIL test failure helper 2024-08-29 21:04:17 -04:00
mathvec
misc misc: Add support for Linux uio.h RWF_NOAPPEND flag 2025-01-12 18:12:56 -08:00
nis nis: Build libnsl with 64 bit time_t 2022-12-28 17:23:26 -03:00
nptl nptl: Convert tst-setuid2 to test-driver 2025-01-11 14:59:17 -08:00
nptl_db nptl_db: Re-use the ELF-to-abilist converter for ABI checking 2021-06-29 22:17:08 +02:00
nscd nscd: Use time_t for return type of addgetnetgrentX 2024-05-02 22:04:35 +02:00
nss Fix leak in getaddrinfo introduced by the fix for CVE-2023-4806 [BZ #30843] 2023-09-26 15:38:49 -04:00
po po/nl.po: Update Dutch translation. 2021-08-01 20:52:28 -04:00
posix posix: Fix double-free after allocation failure in regcomp (bug 33185) 2025-07-24 10:58:40 +02:00
pwd
resolv resolv: Fix tst-resolv-short-response for older GCC (bug 32042) 2024-08-01 21:12:01 +02:00
resource y2038: Add support for 64-bit time on legacy ABIs 2021-06-15 10:42:11 -03:00
rt librt: add test (bug 28213) 2021-08-16 11:35:35 +05:30
scripts csu: Implement and use _dl_early_allocate during static startup 2022-05-19 12:13:53 +02:00
setjmp
shadow
signal y2038: Add support for 64-bit time on legacy ABIs 2021-06-15 10:42:11 -03:00
socket Fix name space violation in fortify wrappers (bug 32052) 2024-08-06 09:04:53 +02:00
soft-fp soft-fp: Add __extendhfsf2/__extendhfdf2, __truncsfhf2/__truncdfhf2, __eqhf2/__nehf2 2021-07-07 08:01:32 -07:00
stdio-common ungetc: Fix backup buffer leak on program exit [BZ #27821] 2024-08-29 21:04:44 -04:00
stdlib Fix error reporting (false negatives) in SGID tests 2025-06-20 12:13:14 +02:00
string x86: Fix wcsnlen-avx2 page cross length comparison [BZ #29591] 2022-11-24 14:42:41 -08:00
sunrpc CVE-2022-23218: Buffer overflow in sunrpc svcunix_create (bug 28768) 2022-01-17 11:49:25 +01:00
support Fix error reporting (false negatives) in SGID tests 2025-06-20 12:13:14 +02:00
sysdeps x86-64: Add GLIBC_ABI_DT_X86_64_PLT [BZ #33212] 2025-08-18 01:06:14 +01:00
sysvipc Linux: Cleanups after librt move 2021-06-28 09:51:01 +02:00
termios
time Use 64-bit time_t interfaces in strftime and strptime (bug 30053) 2023-02-07 10:32:47 -03:00
timezone time: Set daylight to 1 for matching DST/offset change (bug 29951) 2023-01-10 17:36:15 +01:00
wcsmbs Fix name space violation in fortify wrappers (bug 32052) 2024-08-06 09:04:53 +02:00
wctype
.gitattributes
.gitignore
COPYING
COPYING.LIB
INSTALL INSTALL: Rephrase -with-default-link documentation 2022-04-26 15:27:43 +02:00
LICENSES
MAINTAINERS
Makeconfig Force DT_RPATH for --enable-hardcoded-path-in-tests 2024-05-10 05:09:45 -07:00
Makefile Install shared objects under their ABI names 2021-06-28 08:33:57 +02:00
Makefile.help
Makefile.in
Makerules Use LFS and 64 bit time for installed programs (BZ #15333) 2022-12-28 17:23:25 -03:00
NEWS posix: Fix double-free after allocation failure in regcomp (bug 33185) 2025-07-24 10:58:40 +02:00
README
Rules Move malloc hooks into a compat DSO 2021-07-22 18:37:59 +05:30
abi-tags
aclocal.m4 configure: Replaced obsolete AC_TRY_COMPILE 2021-06-04 10:16:00 -03:00
config.h.in i386: Remove broken CAN_USE_REGISTER_ASM_EBP (bug 28771) 2022-01-13 15:21:32 +01:00
config.make.in
configure Default to --with-default-link=no (bug 25812) 2022-04-22 11:31:14 +02:00
configure.ac Default to --with-default-link=no (bug 25812) 2022-04-22 11:31:14 +02:00
extra-lib.mk
gen-locales.mk
libc-abis
libof-iterator.mk
o-iterator.mk
shlib-versions nss: Do not mention NSS test modules in <gnu/lib-names.h> 2022-03-11 11:13:34 +01:00
test-skeleton.c
version.h Prepare for glibc 2.34 release. 2021-08-01 21:24:04 -04:00

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,
and is an important part of what makes up a GNU system.  It provides the
system API for all programs written in C and C-compatible languages such
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In GNU/Hurd systems, it works with a microkernel and Hurd servers.

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GNU/Hurd system, using configurations i[4567]86-*-gnu.

When working with Linux kernels, this version of the GNU C Library
requires Linux kernel version 3.2 or later.

Also note that the shared version of the libgcc_s library must be
installed for the pthread library to work correctly.

The GNU C Library supports these configurations for using Linux kernels:

	aarch64*-*-linux-gnu
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See the file INSTALL to find out how to configure, build, and install
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