* [binutils-gdb] asan: heap buffer overflow elf_link_add_to_first_hash
@ 2024-04-11 7:39 Alan Modra
0 siblings, 0 replies; only message in thread
From: Alan Modra @ 2024-04-11 7:39 UTC (permalink / raw)
To: binutils-cvs
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=de9dc65bd45c118d56600bbf1786322284fde795
commit de9dc65bd45c118d56600bbf1786322284fde795
Author: Alan Modra <amodra@gmail.com>
Date: Thu Apr 11 16:39:18 2024 +0930
asan: heap buffer overflow elf_link_add_to_first_hash
Seen on mmix.
mmix +FAIL: ld-misc/defsym1
mmix +FAIL: sysroot-prefix common plain -Lpath, quoted
mmix +FAIL: sysroot-prefix common plain -Lpath, unquoted
mmix +FAIL: sysroot-prefix common full-path, quoted
mmix +FAIL: sysroot-prefix common full-path, unquoted
mmix +FAIL: sysroot-prefix common plain =-prefixed with empty, quoted
mmix +FAIL: sysroot-prefix common plain =-prefixed with empty, unquoted
mmix +FAIL: sysroot-prefix common plain $SYSROOT-prefixed with empty, quoted
mmix +FAIL: sysroot-prefix common plain $SYSROOT-prefixed with empty, unquoted
mmix +FAIL: sysroot-prefix common plain =-prefixed -Lpath, quoted
mmix +FAIL: sysroot-prefix common plain =-prefixed -Lpath, unquoted
mmix +FAIL: sysroot-prefix common plain $SYSROOT-prefixed -Lpath, quoted
mmix +FAIL: sysroot-prefix common plain $SYSROOT-prefixed -Lpath, unquoted
mmix +FAIL: sysroot-prefix common full-path =-prefixed without, quoted
mmix +FAIL: sysroot-prefix common full-path =-prefixed without, unquoted
mmix +FAIL: sysroot-prefix common full-path $SYSROOT-prefixed without, quoted
mmix +FAIL: sysroot-prefix common full-path $SYSROOT-prefixed without, unquoted
==3746597==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6070000007a0 at pc 0x56d87b0d1a40 bp 0x7fffb1629bf0 sp 0x7fffb1629be0
READ of size 8 at 0x6070000007a0 thread T0
#0 0x56d87b0d1a3f in elf_link_add_to_first_hash /home/alan/src/binutils-gdb/bfd/elflink.c:4312
mmix uses bfd_link_generic_hash_table.
* elflink.c (_bfd_elf_archive_symbol_lookup): Dont use first_hash
unless the hash table is bfd_link_elf_hash_table.
(elf_link_add_archive_symbols): Likewise.
Diff:
---
bfd/elflink.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/bfd/elflink.c b/bfd/elflink.c
index 22fddb8f56b..321e3d5e2ff 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -6116,7 +6116,8 @@ _bfd_elf_archive_symbol_lookup (bfd *abfd,
{
/* Add this symbol to first hash if this archive has the first
definition. */
- elf_link_add_to_first_hash (abfd, info, name, false);
+ if (is_elf_hash_table (info->hash))
+ elf_link_add_to_first_hash (abfd, info, name, false);
return h;
}
@@ -6258,6 +6259,8 @@ elf_link_add_archive_symbols (bfd *abfd, struct bfd_link_info *info)
/* Symbol must be defined. Don't check it again. */
included[i] = true;
+ if (!is_elf_hash_table (info->hash))
+ continue;
/* Ignore the archive if the symbol isn't defined in a
shared object. */
if (!((struct elf_link_hash_entry *) h)->def_dynamic)
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2024-04-11 7:39 [binutils-gdb] asan: heap buffer overflow elf_link_add_to_first_hash Alan Modra
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