From f9cbd99a753c10503e29605557d9ab9007f13235 Mon Sep 17 00:00:00 2001
From: Peter Rajnoha <prajnoha@redhat.com>
Date: Mon, 24 Jun 2024 09:25:13 +0200
Subject: [PATCH] base: util: check provided buffer len fits ssize_t in
 sid_util_fd_read_all

---
 src/base/util.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/base/util.c b/src/base/util.c
index a083ef2c..36689843 100644
--- a/src/base/util.c
+++ b/src/base/util.c
@@ -21,6 +21,7 @@
 
 #include <errno.h>
 #include <fcntl.h>
+#include <limits.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
@@ -59,6 +60,9 @@ ssize_t sid_util_fd_read_all(int fd, void *buf, size_t len)
 {
 	ssize_t n, total = 0;
 
+	if (len > SSIZE_MAX)
+		return -ERANGE;
+
 	while (len) {
 		n = read(fd, buf, len);
 		if (n < 0) {