---
id: CVE-2026-80737
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  serial: amba-pl011: synchronize DMA teardown

  dmaengine_terminate_all() does not wait for a running callback, so the TX
  callback can still touch the TX buffer after it …
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  serial: amba-pl011: synchronize DMA teardown

  dmaengine_terminate_all() does not wait for a running callback, so the TX
  callback can still touch the TX buffer after it …
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-416
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 8
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-09-03'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T20:18:09.597'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80737'
references:
  - url: 'https://git.kernel.org/stable/c/440915499231e9db1c361aa45bb702e8fd3b4a32'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/44bd0ecc3444882d08ecfbc2b2418d2f463d3186'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5974cb66681eac367107b05924744d7e3b49d41c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9f6989e477f03a4721d34bb4b09b17accd40283e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a38fae9d212e2d3ed5e9ec0ef773f8c0a27fb76e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c8c8e895f65fbf71ea6224e27cf8dab91b776e0d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f70c9d4fba46463a5b1c7b3ee9ee3b40c90dac03'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fdfb46c387241b4eddd36d746793764413285913'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80737.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80737'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2527861'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-80737'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80737'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80737.mbox
  - url: 'https://kernelcve.org/list/?q=CVE-2026-80737'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
  - cve.org
  - score-dispute
epss: 0.00129
epssPercentile: 0.02533
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T19:21:17.321670Z'
scores:
  nvd: 7.8
  vendor: 4.7
  cna: 7.8
ingestedAt: '2026-10-16T19:46:24.300Z'
---

## Overview

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

serial: amba-pl011: synchronize DMA teardown

dmaengine_terminate_all() does not wait for a running callback, so the TX
callback can still touch the TX buffer after it is freed. The RX poll
timer reads the RX buffers without the port lock.

Switch to dmaengine_terminate_sync() and delete the RX timer before
freeing the buffers.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-26 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80737.json)