SB20260928195 - Use of Uninitialized Variable in Linux kernel hwmon driver

Description

This security bulletin contains information about 1 vulnerability.

1) Use of Uninitialized Variable (CVE-ID: CVE-2026-98001)

CWE-ID: CWE-457 - Use of Uninitialized Variable

CVSSv4: 5.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to cause a denial of service.

The vulnerability exists due to use of uninitialized stack memory in ltc428_clk_provider_setup() when initializing the ltc4282 clock provider. A local privileged user can trigger initialization of the ltc4282 clock provider to cause a denial of service.

The issue is exposed when CONFIG_INIT_STACK_ALL_PATTERN or CONFIG_INIT_STACK_NONE is enabled.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/80b46a3d066d4e2c1dd4edb90d4aa3f22ca79f39
• https://git.kernel.org/stable/c/aa08ce1ffaf36c7bdd3edd0ad65f72413639bfad
• https://git.kernel.org/stable/c/c4a96da5a3f132d80aa971ddbeb86808539ba0e6
• https://git.kernel.org/stable/c/e317326d1755ea054b98e7a4833b929157461c35