---
id: CVE-2026-23133
title: 'wifi: ath10k: fix dma_free_coherent() pointer'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: ath10k: fix dma_free_coherent() pointer

  dma_alloc_coherent() allocates a DMA mapped buffer and stores the
  addresses in XXX_unaligned fields.  Those should be reu…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <
    e2dda298ef809aa201ea7c0904c4d064f6c497cb
  - >-
    Linux >= 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <
    fc8da65f9fe1bc6802f8240b342cfff4f5c7e841
  - >-
    Linux >= 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <
    b0ad924332a96550a84b8c0ae5483e7042d65fa9
  - >-
    Linux >= 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <
    1928851334ecfd6e0d663121ab69ac639d4217a6
  - >-
    Linux >= 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <
    5d6fa4d2c9799c09389588da5118a72d97d87e92
  - >-
    Linux >= 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <
    07f363f305793baecad41816f73056252f3df61e
  - >-
    Linux >= 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 <
    9282a1e171ad8d2205067e8ec3bbe4e3cef4f29f
  - Linux 4.16
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-10T20:41:17.367538Z'
published: '2026-02-14'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T18:25:32.854Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-23133'
references:
  - url: 'https://git.kernel.org/stable/c/e2dda298ef809aa201ea7c0904c4d064f6c497cb'
  - url: 'https://git.kernel.org/stable/c/fc8da65f9fe1bc6802f8240b342cfff4f5c7e841'
  - url: 'https://git.kernel.org/stable/c/b0ad924332a96550a84b8c0ae5483e7042d65fa9'
  - url: 'https://git.kernel.org/stable/c/1928851334ecfd6e0d663121ab69ac639d4217a6'
  - url: 'https://git.kernel.org/stable/c/5d6fa4d2c9799c09389588da5118a72d97d87e92'
  - url: 'https://git.kernel.org/stable/c/07f363f305793baecad41816f73056252f3df61e'
  - url: 'https://git.kernel.org/stable/c/9282a1e171ad8d2205067e8ec3bbe4e3cef4f29f'
tags:
  - cve.org
epss: 0.00143
epssPercentile: 0.03275
ingestedAt: '2026-10-19T18:35:50.100Z'
---

## Overview

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

wifi: ath10k: fix dma_free_coherent() pointer

dma_alloc_coherent() allocates a DMA mapped buffer and stores the
addresses in XXX_unaligned fields.  Those should be reused when freeing
the buffer rather than the aligned addresses.

## Affected

- `Linux >= 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 < e2dda298ef809aa201ea7c0904c4d064f6c497cb`
- `Linux >= 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 < fc8da65f9fe1bc6802f8240b342cfff4f5c7e841`
- `Linux >= 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 < b0ad924332a96550a84b8c0ae5483e7042d65fa9`
- `Linux >= 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 < 1928851334ecfd6e0d663121ab69ac639d4217a6`
- `Linux >= 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 < 5d6fa4d2c9799c09389588da5118a72d97d87e92`
- `Linux >= 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 < 07f363f305793baecad41816f73056252f3df61e`
- `Linux >= 2a1e1ad3fd37a632b61f50e73dafddb4b0fa57f1 < 9282a1e171ad8d2205067e8ec3bbe4e3cef4f29f`
- `Linux 4.16`

## Remediation

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