CVE-2022-49982

Service interruption via pvrusb2 probe memory leak

Published Jun 18, 2025 · Updated May 11, 2026

Memory leak in the Linux pvrusb2 driver allows local users to interrupt service by triggering a failed USB device probe. The pvr2_hdw_create error path registers a V4L2 device but does not unregister it, while later cleanup returns early because mp->hdw is NULL and retains the USB interface reference. Exploitation requires local low-privileged access and a pvrusb2 probe failure; the resulting leak affects availability without reported data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the Linux pvrusb2 driver allows local users to interrupt service by triggering a failed USB device probe. The pvr2_hdw_create error path registers a V4L2 device but does not unregister it, while later cleanup returns early because mp->hdw is NULL and retains the USB interface reference. Exploitation requires local low-privileged access and a pvrusb2 probe failure; the resulting leak affects availability without reported data disclosure or modification.

The record

CVE
CVE-2022-49982
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.6.30
  2. Affected versionversion=b72b7bf5cbb2ae77b3bf748456655fc284baf04c <2fe46195d2f0d5d09ea65433aefe47a4d0d0ff4d
  3. Affected versionversion=b72b7bf5cbb2ae77b3bf748456655fc284baf04c <466b67c0543b2ae67814d053f6e29b39be6b33bb
  4. Affected versionversion=b72b7bf5cbb2ae77b3bf748456655fc284baf04c <491762b3250fb06a0c97b5198656ea48359eaeed
  5. Affected versionversion=b72b7bf5cbb2ae77b3bf748456655fc284baf04c <945a9a8e448b65bec055d37eba58f711b39f66f0
  6. Affected versionversion=b72b7bf5cbb2ae77b3bf748456655fc284baf04c <ba7dd8a9686a61a34b3a7b922ce721378d4740d0
  7. Affected versionversion=b72b7bf5cbb2ae77b3bf748456655fc284baf04c <bacb37bdc2a21c8f7fdc83dcc0dea2f4ca1341fb
  8. Affected versionversion=b72b7bf5cbb2ae77b3bf748456655fc284baf04c <c02d2a91a85c4c4d05826cd1ea74a9b8d42e4280
  9. Affected versionversion=b72b7bf5cbb2ae77b3bf748456655fc284baf04c <f2f6e67522916f53ad8ccd4dbe68dcf76e9776e5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.30; version=b72b7bf5cbb2ae77b3bf748456655fc284baf04c <2fe46195d2f0d5d09ea65433aefe47a4d0d0ff4d; version=b72b7bf5cbb2ae77b3bf748456655fc284baf04c <466b67c0543b2ae67814d053f6e29b39be6b33bb; version=b72b7bf5cbb2ae77b3bf748456655fc284baf04c <491762b3250fb06a0c97b5198656ea48359eaeed; version=b72b7bf5cbb2ae77b3bf748456655fc284baf04c <945a9a8e448b65bec055d37eba58f711b39f66f0; version=b72b7bf5cbb2ae77b3bf748456655fc284baf04c <ba7dd8a9686a61a34b3a7b922ce721378d4740d0; version=b72b7bf5cbb2ae77b3bf748456655fc284baf04c <bacb37bdc2a21c8f7fdc83dcc0dea2f4ca1341fb; version=b72b7bf5cbb2ae77b3bf748456655fc284baf04c <c02d2a91a85c4c4d05826cd1ea74a9b8d42e4280; version=b72b7bf5cbb2ae77b3bf748456655fc284baf04c <f2f6e67522916f53ad8ccd4dbe68dcf76e9776e5

Published CVSS scores

5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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