CVE-2026-74553

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

hwmon: (nct6775-core) Fix number of temperature registers for NCT6116

Unlike NCT6106, NCT6116 only has three temperature registers, and with

it only three temperature source and temperature source configuration

registers. The register addresses match those of NCT6106 and can be

re-used.

The code used a separate array to list the temperature source registers

for NCT6116, but used the size of the NCT6106 register array to set

the number of registers. The NCT6106 register array provides six addresses,

while the temperature source register array for NCT6116 only provides three

addresses. This causes a KASAN report.

BUG: KASAN: global-out-of-bounds in nct6775_probe+0x936/0x46f0 [nct6775]

Read of size 2 at addr ffffffffc19561a6 by task modprobe/954

...

Call Trace:

dump_stack+0x7d/0xa7

print_address_description.constprop.0+0x1c/0x220

? __kasan_kmalloc.constprop.0+0xc9/0xd0

? __kmalloc_node_track_caller+0x194/0x5b0

?

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References