Fix: lttng-elf: untrusted entry size divisor

[lttng-tools.git] / src / common / lttng-elf.cpp

diff --git a/src/common/lttng-elf.cpp b/src/common/lttng-elf.cpp
index 992410a883d8d4ffa96636f2db612c3f818e9716..711447203169c4d2427ce05e669f19795d3275a1 100644 (file)
--- a/src/common/lttng-elf.cpp
+++ b/src/common/lttng-elf.cpp
@@ -824,6 +824,12 @@ int lttng_elf_get_symbol_offset(int fd, char *symbol, uint64_t *offset)
        }
 
        /* Get the number of symbol in the table for the iteration. */
+       if (symtab_hdr.sh_entsize == 0) {
+               DBG("Invalid ELF string table entry size.");
+               ret = LTTNG_ERR_ELF_PARSING;
+               goto free_symbol_table_data;
+       }
+
        sym_count = symtab_hdr.sh_size / symtab_hdr.sh_entsize;
 
        /* Loop over all symbol. */