CVE-2021-47386
published 2024-05-21CVE-2021-47386: In the Linux kernel, the following vulnerability has been resolved: hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure field If…
PriorityP336high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.26%
17.7th percentile
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
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.14.12-1 (bookworm) | linux 5.14.12-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 358d2071100d84cfe6ef4a9d70ac0d998a1d501e < 44d3c480e4e2a75bf6296a18b4356157991ccd80 | 44d3c480e4e2a75bf6296a18b4356157991ccd80 |
| linux | linux | >= 358d2071100d84cfe6ef4a9d70ac0d998a1d501e < 516d9055039017a20a698103be2b556b4c976bb8 | 516d9055039017a20a698103be2b556b4c976bb8 |
| linux | linux | >= 358d2071100d84cfe6ef4a9d70ac0d998a1d501e < 16887ae4e3defd2c4e7913b6c539f33eaf4eac5c | 16887ae4e3defd2c4e7913b6c539f33eaf4eac5c |
| linux | linux | >= 358d2071100d84cfe6ef4a9d70ac0d998a1d501e < 943c15ac1b84d378da26bba41c83c67e16499ac4 | 943c15ac1b84d378da26bba41c83c67e16499ac4 |
| linux | linux_kernel | < 5.4.151 | 5.4.151 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.84-1 | 5.10.84-1 |
| linux | linux_kernel | >= 0 < 5.14.12-1 | 5.14.12-1 |
| linux | linux_kernel | >= 0 < 5.14.12-1 | 5.14.12-1 |
| linux | linux_kernel | >= 0 < 5.14.12-1 | 5.14.12-1 |
| linux | linux_kernel | >= 5.11 < 5.14.10 | 5.14.10 |
| linux | linux_kernel | >= 5.5 < 5.10.71 | 5.10.71 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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OSV
CVE-2021-47386: In the Linux kernel, the following vulnerability has been resolved: hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure fi
osv·2024-05-21·CVSS 7.8
CVE-2021-47386 [HIGH] CVE-2021-47386: In the Linux kernel, the following vulnerability has been resolved: hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure fi
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]
GHSA
GHSA-2wcp-6fq9-mcr6: In the Linux kernel, the following vulnerability has been resolved:
hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure f
ghsa_unreviewed·2024-05-21
CVE-2021-47386 [HIGH] CWE-476 GHSA-2wcp-6fq9-mcr6: In the Linux kernel, the following vulnerability has been resolved:
hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure f
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]
Red Hat
kernel: hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure field
vendor_redhat·2024-05-21·CVSS 7.8
CVE-2021-47386 [HIGH] CWE-476 kernel: hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure field
kernel: hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure field
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 mu
Debian
CVE-2021-47386: linux - In the Linux kernel, the following vulnerability has been resolved: hwmon: (w83...
vendor_debian·2021·CVSS 7.8
CVE-2021-47386 [HIGH] CVE-2021-47386: linux - In the Linux kernel, the following vulnerability has been resolved: hwmon: (w83...
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]
Scope: local
bookworm: resolved (fixed in 5.14.12-1)
bullseye: resolved (fi
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/16887ae4e3defd2c4e7913b6c539f33eaf4eac5chttps://git.kernel.org/stable/c/44d3c480e4e2a75bf6296a18b4356157991ccd80https://git.kernel.org/stable/c/516d9055039017a20a698103be2b556b4c976bb8https://git.kernel.org/stable/c/943c15ac1b84d378da26bba41c83c67e16499ac4https://git.kernel.org/stable/c/16887ae4e3defd2c4e7913b6c539f33eaf4eac5chttps://git.kernel.org/stable/c/44d3c480e4e2a75bf6296a18b4356157991ccd80https://git.kernel.org/stable/c/516d9055039017a20a698103be2b556b4c976bb8https://git.kernel.org/stable/c/943c15ac1b84d378da26bba41c83c67e16499ac4
2024-05-21
Published