---
id: CVE-2022-50544
title: 'usb: host: xhci: Fix potential memory leak in xhci_alloc_stream_info()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  usb: host: xhci: Fix potential memory leak in xhci_alloc_stream_info()

  xhci_alloc_stream_info() allocates stream context array for stream_info
  ->stream_ctx_array with …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 <
    7fc6bab3413e6a42bb1264ff7c9149808c93a4c7
  - >-
    Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 <
    e702de2f5c893bf2cdb0152191f99a6ad1411823
  - >-
    Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 <
    ddab9fe76296840aad686c66888a9c1dfdbff5ff
  - >-
    Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 <
    9fa81cbd2dd300aa8fe9bac70e068b9a11cbb144
  - >-
    Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 <
    91271a3e772e180bbb8afb114c72fd294a02f93d
  - >-
    Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 <
    fcd594da0b5955119d9707e4e0a8d0fb1c969101
  - >-
    Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 <
    a40ad475236022f3432880e3091c380e46e71a71
  - >-
    Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 <
    782c873f8e7686f5b3c47e8b099f7e08c3dd1fdc
  - >-
    Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 <
    7e271f42a5cc3768cd2622b929ba66859ae21f97
  - Linux 2.6.35
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T20:13:30.334291Z'
published: '2025-10-07'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T20:20:51.839Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2022-50544'
references:
  - url: 'https://git.kernel.org/stable/c/7fc6bab3413e6a42bb1264ff7c9149808c93a4c7'
  - url: 'https://git.kernel.org/stable/c/e702de2f5c893bf2cdb0152191f99a6ad1411823'
  - url: 'https://git.kernel.org/stable/c/ddab9fe76296840aad686c66888a9c1dfdbff5ff'
  - url: 'https://git.kernel.org/stable/c/9fa81cbd2dd300aa8fe9bac70e068b9a11cbb144'
  - url: 'https://git.kernel.org/stable/c/91271a3e772e180bbb8afb114c72fd294a02f93d'
  - url: 'https://git.kernel.org/stable/c/fcd594da0b5955119d9707e4e0a8d0fb1c969101'
  - url: 'https://git.kernel.org/stable/c/a40ad475236022f3432880e3091c380e46e71a71'
  - url: 'https://git.kernel.org/stable/c/782c873f8e7686f5b3c47e8b099f7e08c3dd1fdc'
  - url: 'https://git.kernel.org/stable/c/7e271f42a5cc3768cd2622b929ba66859ae21f97'
tags:
  - cve.org
epss: 0.00163
epssPercentile: 0.05559
ingestedAt: '2026-11-05T22:38:31.748Z'
---

## Overview

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

usb: host: xhci: Fix potential memory leak in xhci_alloc_stream_info()

xhci_alloc_stream_info() allocates stream context array for stream_info
->stream_ctx_array with xhci_alloc_stream_ctx(). When some error occurs,
stream_info->stream_ctx_array is not released, which will lead to a
memory leak.

We can fix it by releasing the stream_info->stream_ctx_array with
xhci_free_stream_ctx() on the error path to avoid the potential memory
leak.

## Affected

- `Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 < 7fc6bab3413e6a42bb1264ff7c9149808c93a4c7`
- `Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 < e702de2f5c893bf2cdb0152191f99a6ad1411823`
- `Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 < ddab9fe76296840aad686c66888a9c1dfdbff5ff`
- `Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 < 9fa81cbd2dd300aa8fe9bac70e068b9a11cbb144`
- `Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 < 91271a3e772e180bbb8afb114c72fd294a02f93d`
- `Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 < fcd594da0b5955119d9707e4e0a8d0fb1c969101`
- `Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 < a40ad475236022f3432880e3091c380e46e71a71`
- `Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 < 782c873f8e7686f5b3c47e8b099f7e08c3dd1fdc`
- `Linux >= 8df75f42f8e67e2851cdcf6da91640fb881defd1 < 7e271f42a5cc3768cd2622b929ba66859ae21f97`
- `Linux 2.6.35`

## Remediation

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