[dpdk-dev] [PATCH] cfgfile: fix NULL pointer dereference
Jacek Piasecki
jacekx.piasecki at intel.com
Thu Oct 26 08:24:06 CEST 2017
Function memchr() could return NULL and assign it to split[1] pointer.
Additional check and error handing is made after memchr() call.
Coverity issue: 195004
Fixes: a6a47ac9c2c9 ("cfgfile: rework load function")
Cc: jacekx.piasecki at intel.com
Cc: stable at dpdk.org
Signed-off-by: Jacek Piasecki <jacekx.piasecki at intel.com>
---
lib/librte_cfgfile/rte_cfgfile.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/lib/librte_cfgfile/rte_cfgfile.c b/lib/librte_cfgfile/rte_cfgfile.c
index 124aef5..80077b6 100644
--- a/lib/librte_cfgfile/rte_cfgfile.c
+++ b/lib/librte_cfgfile/rte_cfgfile.c
@@ -241,6 +241,11 @@ rte_cfgfile_load_with_params(const char *filename, int flags,
split[0] = buffer;
split[1] = memchr(buffer, '=', len);
+ if (split[1] == NULL) {
+ printf("Error line %d - no '='"
+ "character found\n", lineno);
+ goto error1;
+ }
*split[1] = '\0';
split[1]++;
@@ -268,7 +273,7 @@ rte_cfgfile_load_with_params(const char *filename, int flags,
goto error1;
_add_entry(&cfg->sections[cfg->num_sections - 1],
- split[0], (split[1] ? split[1] : ""));
+ split[0], split[1]);
}
}
fclose(f);
--
2.7.4
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