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]
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.4 | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 18.04 | noarch | linux-azure-5.4 | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-bluefield | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-gcp | < any | UNKNOWN |
ubuntu | 18.04 | noarch | linux-gcp-5.4 | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-gkeop | < any | UNKNOWN |
ubuntu | 18.04 | noarch | linux-hwe-5.4 | < any | UNKNOWN |
git.kernel.org/linus/dd4d747ef05addab887dc8ff0d6ab9860bbcd783 (5.15-rc4)
git.kernel.org/stable/c/6cb01fe630eaffc5a2c3f7364436caddba286623
git.kernel.org/stable/c/746011193f44f97f8784edcf8327c587946745fc
git.kernel.org/stable/c/7c4fd5de39f273626a2b0f3a446d2cc85cd47616
git.kernel.org/stable/c/dd4d747ef05addab887dc8ff0d6ab9860bbcd783
launchpad.net/bugs/cve/CVE-2021-47384
nvd.nist.gov/vuln/detail/CVE-2021-47384
security-tracker.debian.org/tracker/CVE-2021-47384
www.cve.org/CVERecord?id=CVE-2021-47384