From 97f1ee6e287b6f711ddbe04700a82295341ed880 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Timo=20Ter=C3=A4s?= Date: Mon, 9 Mar 2015 16:30:53 +0200 Subject: [PATCH] sqlops: fix use-after-free by deep copying result name When creating a new result handle, deep copy the result name. Otherwise we might end up accessing the name after it's freed. (cherry picked from commit 6e2604464e64cfaaf1e0327228f53f4787b69470) --- modules/sqlops/sql_api.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/modules/sqlops/sql_api.c b/modules/sqlops/sql_api.c index eeb6facd63f..e11ae297941 100644 --- a/modules/sqlops/sql_api.c +++ b/modules/sqlops/sql_api.c @@ -199,14 +199,16 @@ sql_result_t* sql_get_result(str *name) return sr; sr = sr->next; } - sr = (sql_result_t*)pkg_malloc(sizeof(sql_result_t)); + sr = (sql_result_t*)pkg_malloc(sizeof(sql_result_t) + name->len); if(sr==NULL) { LM_ERR("no pkg memory\n"); return NULL; } memset(sr, 0, sizeof(sql_result_t)); - sr->name = *name; + memcpy(sr+1, name->s, name->len); + sr->name.s = (char *)(sr + 1); + sr->name.len = name->len; sr->resid = resid; sr->next = _sql_result_root; _sql_result_root = sr; @@ -685,6 +687,7 @@ void sql_destroy(void) pkg_free(r); r = r0; } + _sql_result_root = NULL; } /**