s3:lib: Fix CID 1497484 use-after-free.

p was not set to NULL after being free'd, this can cause a
use-after-free situation.

This fixes coverity issue#1497484

Signed-off-by: Vinit Agnihotri <vagnihot@redhat.com>
Reviewed-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Anoop C S <anoopcs@samba.org>
Autobuild-User(master): Günther Deschner <gd@samba.org>
Autobuild-Date(master): Tue Jul 29 15:01:42 UTC 2025 on atb-devel-224

diff --git a/source3/lib/netapi/examples/common.c b/source3/lib/netapi/examples/common.c
index 72d7150b4eaee7a90cedcc2cc3343f90777ac030..3e5664424ef964c0009f79a2eab1357522d1b93a 100644 (file)
--- a/source3/lib/netapi/examples/common.c
+++ b/source3/lib/netapi/examples/common.c
@@ -156,6 +156,7 @@ char *netapi_read_file(const char *filename, uint32_t *psize)
        err = ferror(file);
        if (err != 0) {
                free(p);
+               p = NULL;
                goto fail;
        }