[PATCH 08/12] misc: fix potential segmentation fault problem in, scandir()
From: Wu Guanghao <hidden>
Date: 2021-05-24 11:25:01
Subsystem:
the rest · Maintainer:
Linus Torvalds
In scandir(), temp_list[num_dent] is allocated by calling malloc(), we should check whether malloc() returns NULL before accessing temp_list[num_dent]. Signed-off-by: Zhiqiang Liu <redacted> Signed-off-by: Wu Guanghao <redacted> --- misc/create_inode.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/misc/create_inode.c b/misc/create_inode.c
index d62e1cb4..869b0614 100644
--- a/misc/create_inode.c
+++ b/misc/create_inode.c@@ -771,6 +771,9 @@ static int scandir(const char *dir_name, struct dirent ***name_list, } // add the copy of dirent to the list temp_list[num_dent] = (struct dirent*)malloc((dent->d_reclen + 3) & ~3); + if (!temp_list[num_dent]) { + goto out; + } memcpy(temp_list[num_dent], dent, dent->d_reclen); num_dent++; }
--