readelf: maximum operations per instruction cannot be zero in .debug_line.

Signed-off-by: Mark Wielaard <[email protected]>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/readelf.c b/src/readelf.c
index 881bb45d..fa9ede1d 100644
--- a/src/readelf.c
+++ b/src/readelf.c
@@ -6506,6 +6506,14 @@ print_debug_line_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr,
 	op_index = (op_index + op_advance) % max_ops_per_instr;
       }
 
+      if (max_ops_per_instr == 0)
+	{
+	  error (0, 0,
+		 gettext ("invalid maximum operations per instruction is zero"));
+	  linep = lineendp;
+	  continue;
+	}
+
       while (linep < lineendp)
 	{
 	  size_t offset = linep - (const unsigned char *) data->d_buf;