util/nvmutil: check fd path in try_fdpath

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/util/nvmutil/nvmutil.c b/util/nvmutil/nvmutil.c
index b40a0910..c7093501 100644
--- a/util/nvmutil/nvmutil.c
+++ b/util/nvmutil/nvmutil.c
@@ -3231,6 +3231,8 @@ x_try_fdpath(const char *prefix, int fd, mode_t mode)
 	unsigned long i = 0;
 	unsigned long j;
 
+	struct stat st;
+
 	while (prefix[i]) {
 		if (i >= PATH_LEN - 1)
 			return -1;
@@ -3246,6 +3248,9 @@ x_try_fdpath(const char *prefix, int fd, mode_t mode)
 	i += j;
 	path[i] = '\0';
 
+	if (stat(path, &st) < 0)
+		return -1;
+
 	return chmod(path, mode);
 }