CVE-2021-47385
See a problem?- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-47385
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47385.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-47385
- Related
- Published
- 2024-05-21T15:15:24Z
- Modified
- 2024-09-18T03:17:27.222744Z
- Summary
- [none]
- Details
-
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 devmi2cnewdummydevice() in w83791ddetectsubclients().
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]
- References
-
- https://git.kernel.org/stable/c/0f36b88173f028e372668ae040ab1a496834d278
- https://git.kernel.org/stable/c/1499bb2c3a87a2efea0065adab2bd66badee61c3
- https://git.kernel.org/stable/c/200ced5ba724d8bbf29dfac4ed1e17a39ccaccd1
- https://git.kernel.org/stable/c/24af1fe376e22c42238a4a604d31e46c486876c3
- https://security-tracker.debian.org/tracker/CVE-2021-47385
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source