Updated: 2025-08-20 02:48:15.290765
Description:
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]
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | NONE | 0.0 |
| CVSS Version 3.x | MEDIUM | 4.4 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 4.4 | MEDIUM | Ignored | 2025-09-23 10:25:07 | This bug exists only in the optional w83791d hardware‑monitoring driver and can occur only when a ... | |
| CentOS 6 ELS | kernel | 2.6.32 | 4.4 | MEDIUM | Ignored | 2024-09-25 12:27:07 | Ignored due to low severity | |
| CentOS 7 ELS | kernel | 3.10.0 | 4.4 | MEDIUM | Ignored | 2024-09-25 12:27:07 | Ignored due to low severity | |
| CentOS 8.4 ELS | kernel | 4.18.0 | 4.4 | MEDIUM | Released | CLSA-2024:1727690947 | 2024-09-30 10:47:15 | |
| CentOS 8.5 ELS | kernel | 4.18.0 | 4.4 | MEDIUM | Released | CLSA-2024:1727690025 | 2024-09-30 10:47:16 | |
| CentOS Stream 8 ELS | kernel | 4.18.0 | 4.4 | MEDIUM | Released | CLSA-2024:1727815919 | 2024-10-01 17:27:44 | |
| CloudLinux 6 ELS | kernel | 2.6.32 | 4.4 | MEDIUM | Ignored | 2024-09-25 12:27:07 | Ignored due to low severity | |
| CloudLinux 7 ELS | kernel | 3.10.0 | 4.4 | MEDIUM | Ignored | 2024-09-25 12:27:07 | Ignored due to low severity | |
| Oracle Linux 6 ELS | kernel | 2.6.32 | 4.4 | MEDIUM | Ignored | 2024-09-25 12:27:07 | Ignored due to low severity |