In the Linux kernel, the following vulnerability has been resolved:
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).
[groeck: Dropped unnecessary continuation lines, fixed multi-line alignments]
References
Configurations
Configuration 1 (hide)
|
History
02 Apr 2025, 14:52
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:* |
|
| CWE | CWE-476 | |
| First Time |
Linux linux Kernel
Linux |
|
| References | () https://git.kernel.org/stable/c/6cb01fe630eaffc5a2c3f7364436caddba286623 - Patch | |
| References | () https://git.kernel.org/stable/c/746011193f44f97f8784edcf8327c587946745fc - Patch | |
| References | () https://git.kernel.org/stable/c/7c4fd5de39f273626a2b0f3a446d2cc85cd47616 - Patch | |
| References | () https://git.kernel.org/stable/c/dd4d747ef05addab887dc8ff0d6ab9860bbcd783 - Patch |
Information
Published : 2024-05-21 15:15
Updated : 2025-04-02 14:52
NVD link : CVE-2021-47384
Mitre link : CVE-2021-47384
CVE.ORG link : CVE-2021-47384
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference