Description (CNA)
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]
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 358d2071100d84cfe6ef4a9d70ac0d998a1d501e before 44d3c480e4e2a75bf6296a18b4356157991ccd80; affected 358d2071100d84cfe6ef4a9d70ac0d998a1d501e before 516d9055039017a20a698103be2b556b4c976bb8; affected 358d2071100d84cfe6ef4a9d70ac0d998a1d501e before 16887ae4e3defd2c4e7913b6c539f33eaf4eac5c; affected 358d2071100d84cfe6ef4a9d70ac0d998a1d501e before 943c15ac1b84d378da26bba41c83c67e16499ac4 |
| Linux / Linux | affected 5.4; unaffected 0 before 5.4; unaffected 5.4.151 through 5.4.*; unaffected 5.10.71 through 5.10.*; unaffected 5.14.10 through 5.14.*; unaffected 5.15 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/44d3c480e4e2a75bf6296a18b4356157991ccd80
- https://git.kernel.org/stable/c/516d9055039017a20a698103be2b556b4c976bb8
- https://git.kernel.org/stable/c/16887ae4e3defd2c4e7913b6c539f33eaf4eac5c
- https://git.kernel.org/stable/c/943c15ac1b84d378da26bba41c83c67e16499ac4
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.