Sourceware Bugzilla – Attachment 7966 Details for
Bug 17531
readelf crashes on fuzzed samples
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[patch]
Possible fix for asan problems in comment #39
0001-Possible-fix-for-ASAN-problems-in-comment-39.patch (text/plain), 907 bytes, created by
Espen Grindhaug
on 2014-11-23 15:07:09 UTC
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Description:
Possible fix for asan problems in comment #39
Filename:
MIME Type:
Creator:
Espen Grindhaug
Created:
2014-11-23 15:07:09 UTC
Size:
907 bytes
patch
obsolete
>From 74f197f45ccf0d9c019bd71f995377c49922fae8 Mon Sep 17 00:00:00 2001 >From: Espen Grindhaug <egrindha@cisco.com> >Date: Sun, 23 Nov 2014 16:05:30 +0100 >Subject: [PATCH] Possible fix for ASAN problems in comment #39 > >--- > binutils/readelf.c | 6 ++++++ > 1 file changed, 6 insertions(+) > >diff --git a/binutils/readelf.c b/binutils/readelf.c >index e8ce279..38637d4 100644 >--- a/binutils/readelf.c >+++ b/binutils/readelf.c >@@ -4760,6 +4760,12 @@ get_32bit_elf_symbols (FILE * file, > _("symbol table section indicies")); > if (shndx == NULL) > goto exit_point; >+ /* PR17531: file: heap-buffer-overflow */ >+ else if (symtab_shndx_hdr->sh_size / sizeof(Elf_External_Sym_Shndx) < number) >+ { >+ error (_("Invalid sh_size\n")); >+ goto exit_point; >+ } > } > > isyms = (Elf_Internal_Sym *) cmalloc (number, sizeof (Elf_Internal_Sym)); >-- >2.1.0 >
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