SB20261022441 - Unchecked Return Value in Linux kernel rtc driver

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Main Vulnerability Database SB20261022441

SB20261022441 - Unchecked Return Value in Linux kernel rtc driver

Published: October 22, 2026

Security Bulletin ID SB20261022441
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Unchecked Return Value (CVE-ID: CVE-2026-98825)

CWE-ID: CWE-252 - Unchecked Return Value

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 potentially cause a denial of service by triggering a kernel crash.

The vulnerability exists due to an unchecked error return in the Linux kernel's mpfs_rtc_probe() function when acquiring the RTC reference clock. A local privileged user can potentially trigger driver probing under conditions where devm_clk_get() returns an error pointer, causing clk_get_rate() to dereference that pointer and crash the kernel.


Remediation

Install update from vendor's website.

References