---
id: CVE-2026-98855
title: 'of/overlay: put property on deadprops only after changeset add succeeds'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  of/overlay: put property on deadprops only after changeset add succeeds

  add_changeset_property() links a new property of a not-yet-live
  target node into the node's dea…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= f96278810150fc39085d1872e5b39ea06366d03e <
    d5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3a
  - >-
    Linux >= f96278810150fc39085d1872e5b39ea06366d03e <
    7dc6a769153c0457077a0da4888a00f61e66de15
  - >-
    Linux >= f96278810150fc39085d1872e5b39ea06366d03e <
    5857035a3b53a4e7b5a0d5a740189901ece0b079
  - >-
    Linux >= f96278810150fc39085d1872e5b39ea06366d03e <
    814f2da6995772c07a7c9c2cc6028b6e3f3ecc9c
  - Linux b52ca352489be8beb7de3a8181509a0deaf72e21
  - Linux >= 4.19.49 < 4.20
  - Linux 5.0
published: '2026-10-18'
updated: '2026-10-18'
sourceUpdated: '2026-10-18T15:51:09.970Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-98855'
references:
  - url: 'https://git.kernel.org/stable/c/d5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3a'
  - url: 'https://git.kernel.org/stable/c/7dc6a769153c0457077a0da4888a00f61e66de15'
  - url: 'https://git.kernel.org/stable/c/5857035a3b53a4e7b5a0d5a740189901ece0b079'
  - url: 'https://git.kernel.org/stable/c/814f2da6995772c07a7c9c2cc6028b6e3f3ecc9c'
tags:
  - cve.org
ingestedAt: '2026-10-18T16:47:32.462Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

of/overlay: put property on deadprops only after changeset add succeeds

add_changeset_property() links a new property of a not-yet-live
target node into the node's deadprops list before handing it to
of_changeset_add_property(). If that fails, the error path frees the
property but leaves the freed pointer linked in deadprops, and
of_node_release() frees it a second time when the aborted overlay's
node is released.

Record the changeset entry first and link the property into deadprops
only on success. of_changeset_add_property() never looks at the
node's property lists, so the order of the two steps is otherwise
immaterial, and the error path frees a property that nothing
references.

## Affected

- `Linux >= f96278810150fc39085d1872e5b39ea06366d03e < d5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3a`
- `Linux >= f96278810150fc39085d1872e5b39ea06366d03e < 7dc6a769153c0457077a0da4888a00f61e66de15`
- `Linux >= f96278810150fc39085d1872e5b39ea06366d03e < 5857035a3b53a4e7b5a0d5a740189901ece0b079`
- `Linux >= f96278810150fc39085d1872e5b39ea06366d03e < 814f2da6995772c07a7c9c2cc6028b6e3f3ecc9c`
- `Linux b52ca352489be8beb7de3a8181509a0deaf72e21`
- `Linux >= 4.19.49 < 4.20`
- `Linux 5.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.