elfutils/elfutils-0.174-ar-sh_entsize-zero.patch
2018-11-06 16:51:54 +01:00

28 lines
827 B
Diff

commit 2b16a9be69939822dcafe075413468daac98b327
Author: Mark Wielaard <mark@klomp.org>
Date: Thu Oct 18 19:01:52 2018 +0200
arlib: Check that sh_entsize isn't zero.
A bogus ELF file could have sh_entsize as zero. Don't divide by zero,
but just assume there are no symbols in the section.
https://sourceware.org/bugzilla/show_bug.cgi?id=23786
Signed-off-by: Mark Wielaard <mark@klomp.org>
diff --git a/src/arlib.c b/src/arlib.c
index 778e087..a6521e3 100644
--- a/src/arlib.c
+++ b/src/arlib.c
@@ -252,6 +252,9 @@ arlib_add_symbols (Elf *elf, const char *arfname, const char *membername,
if (data == NULL)
continue;
+ if (shdr->sh_entsize == 0)
+ continue;
+
int nsyms = shdr->sh_size / shdr->sh_entsize;
for (int ndx = shdr->sh_info; ndx < nsyms; ++ndx)
{