CVE-2022-49312

Local denial of service via initialization memory leak

Published Feb 26, 2025 · Updated May 11, 2026

A memory leak in the Linux kernel rtl8712 driver allows local users to exhaust memory when device initialization fails. The r871xu_drv_init failure path leaves the I/O queue allocated by r8712_alloc_io_queue because r8712_usb_dvobj_deinit performs no release action. Reachability requires the staging r8712u USB Wi-Fi driver and a driver-software initialization failure; repeated failures can degrade system availability.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A memory leak in the Linux kernel rtl8712 driver allows local users to exhaust memory when device initialization fails. The r871xu_drv_init failure path leaves the I/O queue allocated by r8712_alloc_io_queue because r8712_usb_dvobj_deinit performs no release action. Reachability requires the staging r8712u USB Wi-Fi driver and a driver-software initialization failure; repeated failures can degrade system availability.

The record

CVE
CVE-2022-49312
Published
Feb 26, 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. Feb 26, 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=2.6.37
  2. Affected versionversion=2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef <205e039fead72e87ad2838f5e649a4c4834f648b
  3. Affected versionversion=2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef <5a89a92efc342dd7c44b6056da87debc598f9c73
  4. Affected versionversion=2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef <7288ff561de650d4139fab80e9cb0da9b5b32434
  5. Affected versionversion=2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef <8eb42d6d10f8fe509117859defddf9e72b4fa4d0
  6. Affected versionversion=2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef <a2882b8baad068d21c99fb2ab5a85a2bdbd5b834

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.37; version=2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef <205e039fead72e87ad2838f5e649a4c4834f648b; version=2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef <5a89a92efc342dd7c44b6056da87debc598f9c73; version=2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef <7288ff561de650d4139fab80e9cb0da9b5b32434; version=2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef <8eb42d6d10f8fe509117859defddf9e72b4fa4d0; version=2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef <a2882b8baad068d21c99fb2ab5a85a2bdbd5b834

Published CVSS scores

5.5CISA ADPCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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