lisa/android_kernel_xiaomi_sm8350
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

cmd64x: potential buffer overflow in cmd64x_program_timings()

Browse Source 
[ Upstream commit 117fcc3053606d8db5cef8821dca15022ae578bb ]

The "drive->dn" value is a u8 and it is controlled by root only, but
it could be out of bounds here so let's check.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dan Carpenter 2020-01-07 16:04:41 +03:00 committed by Greg Kroah-Hartman
parent 419035d75d
commit e5c8d3abd9
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/ide/cmd64x.c
View File

@ -66,6 +66,9 @@ static void cmd64x_program_timings(ide_drive_t *drive, u8 mode)
struct ide_timing t;
u8 arttim = 0;
if (drive->dn >= ARRAY_SIZE(drwtim_regs))
return;
ide_timing_compute(drive, mode, &t, T, 0);
/*