---
id: CVE-2026-72453
title: 'regcache: Do not overwrite error code when finalizing cache after error'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  regcache: Do not overwrite error code when finalizing cache after error

  During regcache initialization, if an error occurs in the
  cache_ops->populate callback, and if …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= b498b70a8174bcb4e801d4d794a49f2d143c5c9f <
    bae057687f61580dd897411cd749da22a7740647
  - >-
    Linux >= 94a3a95f03154d8d4c6206950a7f6ef9a30baec6 <
    9f171aa115ec76be02c76c5765cd2c865279e34a
  - >-
    Linux >= 94a3a95f03154d8d4c6206950a7f6ef9a30baec6 <
    9108f7fa493b4c88cbc09503e0c164244456bad5
  - Linux 6.19
published: '2026-08-15'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T15:12:58.356Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-72453'
references:
  - url: 'https://git.kernel.org/stable/c/bae057687f61580dd897411cd749da22a7740647'
  - url: 'https://git.kernel.org/stable/c/9f171aa115ec76be02c76c5765cd2c865279e34a'
  - url: 'https://git.kernel.org/stable/c/9108f7fa493b4c88cbc09503e0c164244456bad5'
tags:
  - cve.org
epss: 0.00198
epssPercentile: 0.09435
ingestedAt: '2026-10-26T15:29:30.497Z'
---

## Overview

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

regcache: Do not overwrite error code when finalizing cache after error

During regcache initialization, if an error occurs in the
cache_ops->populate callback, and if cache operations include an exit
callback, the error code from populate() is overwritten with the return
value from exit(). This hides the error condition from the caller of
regcache_init(), and can cause NULL pointer dereferences when the regcache
is later accessed.

## Affected

- `Linux >= b498b70a8174bcb4e801d4d794a49f2d143c5c9f < bae057687f61580dd897411cd749da22a7740647`
- `Linux >= 94a3a95f03154d8d4c6206950a7f6ef9a30baec6 < 9f171aa115ec76be02c76c5765cd2c865279e34a`
- `Linux >= 94a3a95f03154d8d4c6206950a7f6ef9a30baec6 < 9108f7fa493b4c88cbc09503e0c164244456bad5`
- `Linux 6.19`

## Remediation

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