SB20260815292 - NULL pointer dereference in Linux kernel rtc driver

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Main Vulnerability Database SB20260815292

SB20260815292 - NULL pointer dereference in Linux kernel rtc driver

Published: August 15, 2026

Security Bulletin ID SB20260815292
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) NULL pointer dereference (CVE-ID: CVE-2026-72424)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to a NULL pointer dereference in the msc313 RTC shared IRQ handler when handling a shared IRQ during device probe before driver data is initialized. A local attacker can trigger the shared interrupt in that window to cause a denial of service.

The issue occurs in interrupt context on systems where the IRQ line is shared with another device.


Remediation

Install update from vendor's website.

References