---
id: CVE-2024-26659
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  xhci: handle isoc Babble and Buffer Overrun events properly

  xHCI 4.9 explicitly forbids assuming that the xHC has released its
  ownership of a multi-TRB TD when it repo…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  xhci: handle isoc Babble and Buffer Overrun events properly

  xHCI 4.9 explicitly forbids assuming that the xHC has released its
  ownership of a multi-TRB TD when it repo…
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-787
vendor: linux
product: linux_kernel
affected:
  - linux_kernel < 5.10.213
  - 'linux_kernel >= 5.11, < 5.15.152'
  - 'linux_kernel >= 5.16, < 6.1.82'
  - 'linux_kernel >= 6.2, < 6.6.17'
  - 'linux_kernel >= 6.7, < 6.7.5'
  - linux_kernel = 6.8
  - debian_linux = 10.0
patched:
  - linux_kernel 6.7.5
published: '2024-04-02'
updated: '2026-08-04'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-26659'
references:
  - url: 'https://git.kernel.org/stable/c/2aa7bcfdbb46241c701811bbc0d64d7884e3346c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2e3ec80ea7ba58bbb210e83b5a0afefee7c171d3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/418456c0ce56209610523f21734c5612ee634134'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/696e4112e5c1ee61996198f0ebb6ca3fab55166e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7c4650ded49e5b88929ecbbb631efb8b0838e811'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f5e7ffa9269a448a720e21f1ed1384d118298c97'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2aa7bcfdbb46241c701811bbc0d64d7884e3346c'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/2e3ec80ea7ba58bbb210e83b5a0afefee7c171d3'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/418456c0ce56209610523f21734c5612ee634134'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/696e4112e5c1ee61996198f0ebb6ca3fab55166e'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/7c4650ded49e5b88929ecbbb631efb8b0838e811'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://git.kernel.org/stable/c/f5e7ffa9269a448a720e21f1ed1384d118298c97'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-265688.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
epss: 0.0024
epssPercentile: 0.13449
ingestedAt: '2026-08-05T10:46:47.734Z'
---

## Overview

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

xhci: handle isoc Babble and Buffer Overrun events properly

xHCI 4.9 explicitly forbids assuming that the xHC has released its
ownership of a multi-TRB TD when it reports an error on one of the
early TRBs. Yet the driver makes such assumption and releases the TD,
allowing the remaining TRBs to be freed or overwritten by new TDs.

The xHC should also report completion of the final TRB due to its IOC
flag being set by us, regardless of prior errors. This event cannot
be recognized if the TD has already been freed earlier, resulting in
"Transfer event TRB DMA ptr not part of current TD" error message.

Fix this by reusing the logic for processing isoc Transaction Errors.
This also handles hosts which fail to report the final completion.

Fix transfer length reporting on Babble errors. They may be caused by
device malfunction, no guarantee that the buffer has been filled.

## Affected

- `linux_kernel < 5.10.213`
- `linux_kernel >= 5.11, < 5.15.152`
- `linux_kernel >= 5.16, < 6.1.82`
- `linux_kernel >= 6.2, < 6.6.17`
- `linux_kernel >= 6.7, < 6.7.5`
- `linux_kernel = 6.8`
- `debian_linux = 10.0`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.7.5`