---
id: CVE-2022-50520
title: 'drm/radeon: Fix PCI device refcount leak in radeon_atrm_get_bios()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/radeon: Fix PCI device refcount leak in radeon_atrm_get_bios()

  As comment of pci_get_class() says, it returns a pci_device with its
  refcount increased and decrease…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= c61e2775873f603148e8e998a938721b7d222d24 <
    6f28c7f67af4ef9bca580ab67ae2d4511797af56
  - >-
    Linux >= c61e2775873f603148e8e998a938721b7d222d24 <
    e738f82e5b1311e8fb3d1409491a6fcce6418fbe
  - >-
    Linux >= c61e2775873f603148e8e998a938721b7d222d24 <
    1079df6acf56f99d86b0081a38c84701412cc90e
  - >-
    Linux >= c61e2775873f603148e8e998a938721b7d222d24 <
    470a77989037c3ab2b08bf2d026d2c0ddc35ff5b
  - >-
    Linux >= c61e2775873f603148e8e998a938721b7d222d24 <
    3991d98a8a07b71c02f3a39f77d6d9a7f575a5c4
  - >-
    Linux >= c61e2775873f603148e8e998a938721b7d222d24 <
    88c6e0995c04b170563b5c894c50a3b2152e18c2
  - >-
    Linux >= c61e2775873f603148e8e998a938721b7d222d24 <
    b9decada8749b606fd8b4f04a3d6c74f7983d7bc
  - >-
    Linux >= c61e2775873f603148e8e998a938721b7d222d24 <
    a6cffe54064a5f6c2162a85af3c16c6b453eac4e
  - >-
    Linux >= c61e2775873f603148e8e998a938721b7d222d24 <
    725a521a18734f65de05b8d353b5bd0d3ca4c37a
  - Linux 61ebf0a926149cc161131470cf848cb70b3d6fe6
  - Linux 0a1d9a860832a5ca43114cdebf0e8650463cc1f0
  - Linux 5f54f145719f453dccc73304cd427096bf7b806c
  - Linux 063ab9cb6308a0806d623c8d6dda5cb2b3b87fce
  - Linux >= 3.2.29 < 3.3
  - Linux >= 3.4.12 < 3.5
  - Linux >= 3.5.5 < 3.6
  - Linux >= 3.2.60 < 3.3
  - Linux 3.6
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T20:12:54.499349Z'
published: '2025-10-07'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T20:20:50.560Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2022-50520'
references:
  - url: 'https://git.kernel.org/stable/c/6f28c7f67af4ef9bca580ab67ae2d4511797af56'
  - url: 'https://git.kernel.org/stable/c/e738f82e5b1311e8fb3d1409491a6fcce6418fbe'
  - url: 'https://git.kernel.org/stable/c/1079df6acf56f99d86b0081a38c84701412cc90e'
  - url: 'https://git.kernel.org/stable/c/470a77989037c3ab2b08bf2d026d2c0ddc35ff5b'
  - url: 'https://git.kernel.org/stable/c/3991d98a8a07b71c02f3a39f77d6d9a7f575a5c4'
  - url: 'https://git.kernel.org/stable/c/88c6e0995c04b170563b5c894c50a3b2152e18c2'
  - url: 'https://git.kernel.org/stable/c/b9decada8749b606fd8b4f04a3d6c74f7983d7bc'
  - url: 'https://git.kernel.org/stable/c/a6cffe54064a5f6c2162a85af3c16c6b453eac4e'
  - url: 'https://git.kernel.org/stable/c/725a521a18734f65de05b8d353b5bd0d3ca4c37a'
tags:
  - cve.org
epss: 0.00167
epssPercentile: 0.05969
ingestedAt: '2026-11-05T22:38:31.746Z'
---

## Overview

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

drm/radeon: Fix PCI device refcount leak in radeon_atrm_get_bios()

As comment of pci_get_class() says, it returns a pci_device with its
refcount increased and decreased the refcount for the input parameter
@from if it is not NULL.

If we break the loop in radeon_atrm_get_bios() with 'pdev' not NULL, we
need to call pci_dev_put() to decrease the refcount. Add the missing
pci_dev_put() to avoid refcount leak.

## Affected

- `Linux >= c61e2775873f603148e8e998a938721b7d222d24 < 6f28c7f67af4ef9bca580ab67ae2d4511797af56`
- `Linux >= c61e2775873f603148e8e998a938721b7d222d24 < e738f82e5b1311e8fb3d1409491a6fcce6418fbe`
- `Linux >= c61e2775873f603148e8e998a938721b7d222d24 < 1079df6acf56f99d86b0081a38c84701412cc90e`
- `Linux >= c61e2775873f603148e8e998a938721b7d222d24 < 470a77989037c3ab2b08bf2d026d2c0ddc35ff5b`
- `Linux >= c61e2775873f603148e8e998a938721b7d222d24 < 3991d98a8a07b71c02f3a39f77d6d9a7f575a5c4`
- `Linux >= c61e2775873f603148e8e998a938721b7d222d24 < 88c6e0995c04b170563b5c894c50a3b2152e18c2`
- `Linux >= c61e2775873f603148e8e998a938721b7d222d24 < b9decada8749b606fd8b4f04a3d6c74f7983d7bc`
- `Linux >= c61e2775873f603148e8e998a938721b7d222d24 < a6cffe54064a5f6c2162a85af3c16c6b453eac4e`
- `Linux >= c61e2775873f603148e8e998a938721b7d222d24 < 725a521a18734f65de05b8d353b5bd0d3ca4c37a`
- `Linux 61ebf0a926149cc161131470cf848cb70b3d6fe6`
- `Linux 0a1d9a860832a5ca43114cdebf0e8650463cc1f0`
- `Linux 5f54f145719f453dccc73304cd427096bf7b806c`
- `Linux 063ab9cb6308a0806d623c8d6dda5cb2b3b87fce`
- `Linux >= 3.2.29 < 3.3`
- `Linux >= 3.4.12 < 3.5`
- `Linux >= 3.5.5 < 3.6`
- `Linux >= 3.2.60 < 3.3`
- `Linux 3.6`

## Remediation

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