发布于3月6日3月6日 Members Rocky Linux: CVE-2021-47386: kernel-rt (RLSA-2024-7001) Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 05/21/2024 Created 10/03/2024 Added 10/02/2024 Modified 11/18/2024 Description 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] Solution(s) rocky-upgrade-kernel-rt rocky-upgrade-kernel-rt-core rocky-upgrade-kernel-rt-debug rocky-upgrade-kernel-rt-debug-core rocky-upgrade-kernel-rt-debug-debuginfo rocky-upgrade-kernel-rt-debug-devel rocky-upgrade-kernel-rt-debug-kvm rocky-upgrade-kernel-rt-debug-modules rocky-upgrade-kernel-rt-debug-modules-extra rocky-upgrade-kernel-rt-debuginfo rocky-upgrade-kernel-rt-debuginfo-common-x86_64 rocky-upgrade-kernel-rt-devel rocky-upgrade-kernel-rt-kvm rocky-upgrade-kernel-rt-modules rocky-upgrade-kernel-rt-modules-extra References https://attackerkb.com/topics/cve-2021-47386 CVE - 2021-47386 https://errata.rockylinux.org/RLSA-2024:7001
