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| author | Nadezda Lutovinova <lutovinova@ispras.ru> | 2021-09-21 18:51:53 +0300 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2021-10-02 15:14:11 +0300 |
| commit | dd4d747ef05addab887dc8ff0d6ab9860bbcd783 (patch) | |
| tree | 95d49c4c5a72dd1612fce3c162e8e90a2937c0c8 /Documentation | |
| parent | 0f36b88173f028e372668ae040ab1a496834d278 (diff) | |
| download | linux-dd4d747ef05addab887dc8ff0d6ab9860bbcd783.tar.xz | |
hwmon: (w83793) Fix NULL pointer dereference by removing unnecessary structure field
If driver read tmp value sufficient for
(tmp & 0x08) && (!(tmp & 0x80)) && ((tmp & 0x7) == ((tmp >> 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/20210921155153.28098-3-lutovinova@ispras.ru
[groeck: Dropped unnecessary continuation lines, fixed multi-line alignments]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions