NULL dereference in ab/wildmatch

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sun, Jun 25, 2017 at 02:50:10AM -0700, scan-admin@xxxxxxxxxxxx wrote:

> 
> ** CID 1413016:  Null pointer dereferences  (FORWARD_NULL)
> /config.c: 213 in include_by_gitdir()
> 
> 
> ________________________________________________________________________________________________________
> *** CID 1413016:  Null pointer dereferences  (FORWARD_NULL)
> /config.c: 213 in include_by_gitdir()
> 207     {
> 208     	struct strbuf text = STRBUF_INIT;
> 209     	struct strbuf pattern = STRBUF_INIT;
> 210     	int ret = 0, prefix;
> 211     	const char *git_dir;
> 212     	int already_tried_absolute = 0;
> >>>     CID 1413016:  Null pointer dereferences  (FORWARD_NULL)
> >>>     Assigning: "code" = "NULL".
> 213     	struct wildmatch_compiled *code = NULL;
> 214     
> 215     	if (opts->git_dir)
> 216     		git_dir = opts->git_dir;
> 217     	else
> 218     		goto done;

I think this comes the "goto done" at the bottom of the context. After
that label, we call wildmatch_free() unconditionally. Probably it just
needs:

diff --git a/config.c b/config.c
index 515f8518e2..cfee92ebbf 100644
--- a/config.c
+++ b/config.c
@@ -260,7 +260,8 @@ static int include_by_gitdir(const struct config_options *opts,
 done:
 	strbuf_release(&pattern);
 	strbuf_release(&text);
-	wildmatch_free(code);
+	if (code)
+		wildmatch_free(code);
 	return ret;
 }
 

though arguably wildmatch_free() should be taught to handle NULL.

-Peff



[Index of Archives]     [Linux Kernel Development]     [Gcc Help]     [IETF Annouce]     [DCCP]     [Netdev]     [Networking]     [Security]     [V4L]     [Bugtraq]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux SCSI]     [Fedora Users]

  Powered by Linux