cve-2021-47385
Vulnerability from cvelistv5
Published
2024-05-21 15:03
Modified
2024-12-19 07:40
Severity ?
Summary
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]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0f36b88173f028e372668ae040ab1a496834d278Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1499bb2c3a87a2efea0065adab2bd66badee61c3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/200ced5ba724d8bbf29dfac4ed1e17a39ccaccd1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/24af1fe376e22c42238a4a604d31e46c486876c3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0f36b88173f028e372668ae040ab1a496834d278Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1499bb2c3a87a2efea0065adab2bd66badee61c3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/200ced5ba724d8bbf29dfac4ed1e17a39ccaccd1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/24af1fe376e22c42238a4a604d31e46c486876c3Patch
Impacted products
Vendor Product Version
Linux Linux
Show details on NVD website

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}


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