---
id: CVE-2026-23145
title: 'ext4: fix iloc.bh leak in ext4_xattr_inode_update_ref'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ext4: fix iloc.bh leak in ext4_xattr_inode_update_ref

  The error branch for ext4_xattr_inode_update_ref forget to release the
  refcount for iloc.bh. Find this when revie…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1cfb3e4ddbdc8e02e637b8852540bd4718bf4814 <
    7c9f059c3d531a12d7ad96cd34a44b8af7c00d5f
  - >-
    Linux >= 505e69f76ac497e788f4ea0267826ec7266b40c8 <
    6241cd1d0acc2363016ac55b8773ba1332dd59d7
  - >-
    Linux >= 3d6269028246f4484bfed403c947a114bb583631 <
    3b00c16e42428a1ecd3a5eb9cc37f8ad9bd47626
  - >-
    Linux >= 79ea7f3e11effe1bd9e753172981d9029133a278 <
    0b06cde92f2f960f4ebe3c988c69f2711f2a24dc
  - >-
    Linux >= 6b879c4c6bbaab03c0ad2a983953bd1410bb165e <
    8e8542c539927ae3898a4d02941f84e252e2dea1
  - >-
    Linux >= 57295e835408d8d425bef58da5253465db3d6888 <
    06e26287f2e349a28ad363941ffd9076bfed8b2e
  - >-
    Linux >= 57295e835408d8d425bef58da5253465db3d6888 <
    d250bdf531d9cd4096fedbb9f172bb2ca660c868
  - Linux ea39e712c2f5ae148ee5515798ae03523673e002
  - Linux 440b003f449a4ff2a00b08c8eab9ba5cd28f3943
  - Linux >= 5.10.246 < 5.10.249
  - Linux >= 5.15.195 < 5.15.199
  - Linux >= 6.1.157 < 6.1.162
  - Linux >= 6.6.113 < 6.6.122
  - Linux >= 6.12.54 < 6.12.67
  - Linux >= 5.4.301 < 5.5
  - Linux >= 6.17.4 < 6.18
  - Linux 6.18
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-10T20:40:26.723393Z'
published: '2026-02-14'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T18:25:33.284Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-23145'
references:
  - url: 'https://git.kernel.org/stable/c/7c9f059c3d531a12d7ad96cd34a44b8af7c00d5f'
  - url: 'https://git.kernel.org/stable/c/6241cd1d0acc2363016ac55b8773ba1332dd59d7'
  - url: 'https://git.kernel.org/stable/c/3b00c16e42428a1ecd3a5eb9cc37f8ad9bd47626'
  - url: 'https://git.kernel.org/stable/c/0b06cde92f2f960f4ebe3c988c69f2711f2a24dc'
  - url: 'https://git.kernel.org/stable/c/8e8542c539927ae3898a4d02941f84e252e2dea1'
  - url: 'https://git.kernel.org/stable/c/06e26287f2e349a28ad363941ffd9076bfed8b2e'
  - url: 'https://git.kernel.org/stable/c/d250bdf531d9cd4096fedbb9f172bb2ca660c868'
tags:
  - cve.org
epss: 0.00143
epssPercentile: 0.03274
ingestedAt: '2026-10-19T18:35:50.099Z'
---

## Overview

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

ext4: fix iloc.bh leak in ext4_xattr_inode_update_ref

The error branch for ext4_xattr_inode_update_ref forget to release the
refcount for iloc.bh. Find this when review code.

## Affected

- `Linux >= 1cfb3e4ddbdc8e02e637b8852540bd4718bf4814 < 7c9f059c3d531a12d7ad96cd34a44b8af7c00d5f`
- `Linux >= 505e69f76ac497e788f4ea0267826ec7266b40c8 < 6241cd1d0acc2363016ac55b8773ba1332dd59d7`
- `Linux >= 3d6269028246f4484bfed403c947a114bb583631 < 3b00c16e42428a1ecd3a5eb9cc37f8ad9bd47626`
- `Linux >= 79ea7f3e11effe1bd9e753172981d9029133a278 < 0b06cde92f2f960f4ebe3c988c69f2711f2a24dc`
- `Linux >= 6b879c4c6bbaab03c0ad2a983953bd1410bb165e < 8e8542c539927ae3898a4d02941f84e252e2dea1`
- `Linux >= 57295e835408d8d425bef58da5253465db3d6888 < 06e26287f2e349a28ad363941ffd9076bfed8b2e`
- `Linux >= 57295e835408d8d425bef58da5253465db3d6888 < d250bdf531d9cd4096fedbb9f172bb2ca660c868`
- `Linux ea39e712c2f5ae148ee5515798ae03523673e002`
- `Linux 440b003f449a4ff2a00b08c8eab9ba5cd28f3943`
- `Linux >= 5.10.246 < 5.10.249`
- `Linux >= 5.15.195 < 5.15.199`
- `Linux >= 6.1.157 < 6.1.162`
- `Linux >= 6.6.113 < 6.6.122`
- `Linux >= 6.12.54 < 6.12.67`
- `Linux >= 5.4.301 < 5.5`
- `Linux >= 6.17.4 < 6.18`
- `Linux 6.18`

## Remediation

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