Description

In the Linux kernel, the following vulnerability has been resolved: hwmon: (w83792d) 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 multipline alignment]

INFO

Published Date :

2024-05-21T15:03:45.615Z

Last Modified :

2025-06-19T12:56:05.177Z

Source :

Linux
AFFECTED PRODUCTS

The following products are affected by CVE-2021-47385 vulnerability.

Vendors Products
Linux
  • Linux Kernel
Redhat
  • Enterprise Linux
  • Rhel Aus
  • Rhel E4s
  • Rhel Eus
  • Rhel Tus
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2021-47385.

URL Resource
https://git.kernel.org/stable/c/0f36b88173f028e372668ae040ab1a496834d278 cve-icon cve-icon
https://git.kernel.org/stable/c/1499bb2c3a87a2efea0065adab2bd66badee61c3 cve-icon cve-icon
https://git.kernel.org/stable/c/200ced5ba724d8bbf29dfac4ed1e17a39ccaccd1 cve-icon cve-icon
https://git.kernel.org/stable/c/24af1fe376e22c42238a4a604d31e46c486876c3 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2024052144-CVE-2021-47385-a7e7@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2021-47385 cve-icon
https://www.cve.org/CVERecord?id=CVE-2021-47385 cve-icon
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