lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [day] [month] [year] [list]
Date:	Sat, 28 Dec 2013 16:53:59 +0100
From:	Ben Hutchings <>
To:	Greg Kroah-Hartman <>
Cc:	LKML <>
Subject: [PATCH] firmware_class: Fix the file size check

We expect to read firmware blobs with a single call to kernel_read(),
which returns int.  Therefore the size must be within the range of
int, not long.

Signed-off-by: Ben Hutchings <>
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -270,21 +270,21 @@ module_param_string(path, fw_path_para,
 MODULE_PARM_DESC(path, "customized firmware image search path with a higher priority than default path");
 /* Don't inline this: 'struct kstat' is biggish */
-static noinline_for_stack long fw_file_size(struct file *file)
+static noinline_for_stack int fw_file_size(struct file *file)
 	struct kstat st;
 	if (vfs_getattr(&file->f_path, &st))
 		return -1;
 	if (!S_ISREG(st.mode))
 		return -1;
-	if (st.size != (long)st.size)
+	if (st.size != (int)st.size)
 		return -1;
 	return st.size;
 static bool fw_read_file_contents(struct file *file, struct firmware_buf *fw_buf)
-	long size;
+	int size;
 	char *buf;
 	size = fw_file_size(file);

Ben Hutchings
Kids!  Bringing about Armageddon can be dangerous.  Do not attempt it in
your own home. - Terry Pratchett and Neil Gaiman, `Good Omens'

Download attachment "signature.asc" of type "application/pgp-signature" (829 bytes)

Powered by blists - more mailing lists