diff options
| author | Nadezda Lutovinova <lutovinova@ispras.ru> | 2021-09-21 18:51:51 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-10-06 15:42:31 +0200 |
| commit | 44d3c480e4e2a75bf6296a18b4356157991ccd80 (patch) | |
| tree | 5fd45c62a35757dc3c229ed991458e4f3f47700b /net/unix/af_unix.c | |
| parent | 200ced5ba724d8bbf29dfac4ed1e17a39ccaccd1 (diff) | |
hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure field
commit 943c15ac1b84d378da26bba41c83c67e16499ac4 upstream.
If driver read val value sufficient for
(val & 0x08) && (!(val & 0x80)) && ((val & 0x7) == ((val >> 4) & 0x7))
from device then Null pointer dereference occurs.
(It is possible if tmp = 0b0xyz1xyz, where same literals mean same numbers)
Also lm75[] does not serve a purpose anymore after switching to
devm_i2c_new_dummy_device() in w83791d_detect_subclients().
The patch fixes possible NULL pointer dereference by removing lm75[].
Found by Linux Driver Verification project (linuxtesting.org).
Cc: stable@vger.kernel.org
Signed-off-by: Nadezda Lutovinova <lutovinova@ispras.ru>
Link: https://lore.kernel.org/r/20210921155153.28098-1-lutovinova@ispras.ru
[groeck: Dropped unnecessary continuation lines, fixed multi-line alignment]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions