Tracker / CVE-2021-47386
CVE-2021-47386
In the Linux kernel, the following vulnerability has been resolved: hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure field 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). [groeck: Dropped unnecessary continuation lines, fixed multi-line alignment]
Prodotti e versioni affette
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · … → 5.4.151 |
| linux | linux_kernel · 5.11 → 5.14.10 |
| linux | linux_kernel · 5.5 → 5.10.71 |