From: Andy Shevchenko andriy.shevchenko@linux.intel.com
[ Upstream commit d2139dfca361a1f5bfc4d4a23455b1a409a69cd4 ]
The byte at offset 6 represents length. Don't take it and drop it immediately by using proper accessor, i.e. get_unaligned_be24().
[JD: Change the subject to something less frightening]
Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Signed-off-by: Jean Delvare jdelvare@suse.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/firmware/dmi_scan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c index d51ca0428bb82..bd43277dbb878 100644 --- a/drivers/firmware/dmi_scan.c +++ b/drivers/firmware/dmi_scan.c @@ -629,7 +629,7 @@ static int __init dmi_smbios3_present(const u8 *buf) { if (memcmp(buf, "_SM3_", 5) == 0 && buf[6] < 32 && dmi_checksum(buf, buf[6])) { - dmi_ver = get_unaligned_be32(buf + 6) & 0xFFFFFF; + dmi_ver = get_unaligned_be24(buf + 7); dmi_num = 0; /* No longer specified */ dmi_len = get_unaligned_le32(buf + 12); dmi_base = get_unaligned_le64(buf + 16);