SB20260812105 - Double free in Linux kernel mtd driver

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Main Vulnerability Database SB20260812105

SB20260812105 - Double free in Linux kernel mtd driver

Published: August 12, 2026

Security Bulletin ID SB20260812105
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-2026-68416)

CWE-ID: CWE-415 - Double Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


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

The vulnerability exists due to a double free in add_mtd_device() error handling for MTD partitions when handling device registration or nvmem provider initialization failures. A local user can trigger a failure in these error paths to cause a denial of service.

The issue also causes a WARN_ON condition because the partition node remains linked in the parent's partitions list when the release callback is invoked.


Remediation

Install update from vendor's website.

References