SB20261022476 - Double free in Linux kernel of driver

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Main Vulnerability Database SB20261022476

SB20261022476 - Double free in Linux kernel of driver

Published: October 22, 2026

Security Bulletin ID SB20261022476
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) Double free (CVE-ID: CVE-2026-98855)

CWE-ID: CWE-415 - Double Free

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 through kernel memory corruption.

The vulnerability exists due to a double free in add_changeset_property() in the Linux kernel device tree overlay subsystem when adding a property to a not-yet-live target node fails. A local privileged user can trigger this failure during overlay processing to potentially cause a kernel crash: the error path frees the property while leaving its pointer in the node's deadprops list, and of_node_release() frees it again when the aborted overlay's node is released.


Remediation

Install update from vendor's website.

References