forked from pool/glibc
Andreas Schwab
f066d6282a
* The <stdbit.h> header type-generic macros have been changed when using
GCC 14.1 or later to use __builtin_stdc_bit_ceil etc. built-in functions
* The GNU C Library now supports a feature test macro _ISOC23_SOURCE to
enable features from the ISO C23 standard
* The ISO C23 function families introduced in TS
18661-4:2015 are now supported in <math.h>
* A new tunable, glibc.rtld.enable_secure, can be used to run a program
as if it were a setuid process
* On Linux, the epoll header was updated to include epoll ioctl definitions
and the related structure added in Linux kernel 6.9
* The fortify functionality has been significantly enhanced for building
programs with clang against the GNU C Library
* Many functions have been added to the vector library for aarch64
* On x86, memset can now use non-temporal stores to improve the performance
of large writes
* Architectures which use a 32-bit seconds-since-epoch field in struct
lastlog, struct utmp, struct utmpx (such as i386, powerpc64le, rv32,
rv64, x86-64) switched from a signed to an unsigned type for that
field
* __rseq_size now denotes the size of the active rseq area (20 bytes
initially), not the size of struct rseq (32 bytes initially).
- arm-dl-start-user.patch, duplocale-global-locale.patch,
elf-parse-tunables.patch,
glibc-CVE-2024-33599-nscd-Stack-based-buffer-overflow-in-n.patch,
glibc-CVE-2024-33600-nscd-Avoid-null-pointer-crashes-after.patch,
glibc-CVE-2024-33600-nscd-Do-not-send-missing-not-found-re.patch,
glibc-CVE-2024-33601-CVE-2024-33602-nscd-netgroup-Use-two.patch,
iconv-iso-2022-cn-ext.patch, nscd-netgroup-cache-timeout.patch,
s390-clone-error-clobber-r7.patch, sigisemptyset.patch,
OBS-URL: https://build.opensuse.org/package/show/Base:System/glibc?expand=0&rev=719
41 lines
1.4 KiB
Diff
41 lines
1.4 KiB
Diff
From 63295e4fda1f6dab4bf7442706fe303bf283036c Mon Sep 17 00:00:00 2001
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From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Date: Mon, 5 Feb 2024 16:10:24 +0000
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Subject: [PATCH] arm: Remove wrong ldr from _dl_start_user (BZ 31339)
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The commit 49d877a80b29d3002887b084eec6676d9f5fec18 (arm: Remove
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_dl_skip_args usage) removed the _SKIP_ARGS literal, which was
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previously loader to r4 on loader _start. However, the cleanup did not
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remove the following 'ldr r4, [sl, r4]' on _dl_start_user, used to check
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to skip the arguments after ld self-relocations.
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In my testing, the kernel initially set r4 to 0, which makes the
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ldr instruction just read the _GLOBAL_OFFSET_TABLE_. However, since r4
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is a callee-saved register; a different runtime might not zero
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initialize it and thus trigger an invalid memory access.
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Checked on arm-linux-gnu.
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Reported-by: Adrian Ratiu <adrian.ratiu@collabora.com>
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Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
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(cherry picked from commit 1e25112dc0cb2515d27d8d178b1ecce778a9d37a)
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---
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sysdeps/arm/dl-machine.h | 1 -
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1 file changed, 1 deletion(-)
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diff --git a/sysdeps/arm/dl-machine.h b/sysdeps/arm/dl-machine.h
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index b857bbc868..dd1a0f6b6e 100644
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--- a/sysdeps/arm/dl-machine.h
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+++ b/sysdeps/arm/dl-machine.h
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@@ -139,7 +139,6 @@ _start:\n\
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_dl_start_user:\n\
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adr r6, .L_GET_GOT\n\
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add sl, sl, r6\n\
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- ldr r4, [sl, r4]\n\
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@ save the entry point in another register\n\
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mov r6, r0\n\
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@ get the original arg count\n\
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--
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2.43.0
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