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-rw-r--r--libcli/security/util_sid.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/libcli/security/util_sid.c b/libcli/security/util_sid.c
index 2ab47f2db2c..ac448765777 100644
--- a/libcli/security/util_sid.c
+++ b/libcli/security/util_sid.c
@@ -339,6 +339,10 @@ NTSTATUS add_sid_to_array(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
{
struct dom_sid *tmp;
+ if ((*num) == UINT32_MAX) {
+ return NT_STATUS_INTEGER_OVERFLOW;
+ }
+
tmp = talloc_realloc(mem_ctx, *sids, struct dom_sid, (*num)+1);
if (tmp == NULL) {
*num = 0;