CVE-2022-49583

Service interruption via leaked receive-buffer pages

Published Feb 26, 2025 · Updated May 23, 2026

Memory leak in the Linux kernel iavf driver allows local users to interrupt service through dummy receive-descriptor handling. The iavf_get_rx_buffer function fails to return the prior receive buffer when hardware writes a dummy descriptor, leaving its allocated page unreleased. The published record does not explain how a local user causes this rare hardware event; the reported consequence is limited to 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

Memory leak in the Linux kernel iavf driver allows local users to interrupt service through dummy receive-descriptor handling. The iavf_get_rx_buffer function fails to return the prior receive buffer when hardware writes a dummy descriptor, leaving its allocated page unreleased. The published record does not explain how a local user causes this rare hardware event; the reported consequence is limited to availability.

The record

CVE
CVE-2022-49583
Published
Feb 26, 2025
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. May 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=2a51e334a0ade539e5b0fcfdbd8b43acb9c7547d
  2. Affected versionversion=5.1.20 <5.2
  3. Affected versionversion=5.2.3 <5.3
  4. Affected versionversion=5.3
  5. Affected versionversion=833577ecf3451c7306abb48f221d365c2ee4cc1b
  6. Affected versionversion=efa14c3985828da3163f5372137cb64d992b0f79 <2918419c06088f6709ceb543feb01752779ade4c
  7. Affected versionversion=efa14c3985828da3163f5372137cb64d992b0f79 <6edb818732fc05fda495f5b3a749bd1cee01398b
  8. Affected versionversion=efa14c3985828da3163f5372137cb64d992b0f79 <a9f49e0060301a9bfebeca76739158d0cf91cdf6
  9. Affected versionversion=efa14c3985828da3163f5372137cb64d992b0f79 <c6af94324911ef0846af1a5ce5e049ca736db34b
  10. Affected versionversion=efa14c3985828da3163f5372137cb64d992b0f79 <d88d59faf4e6f9cc4767664206afdb999b10ec77

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2a51e334a0ade539e5b0fcfdbd8b43acb9c7547d; version=5.1.20 <5.2; version=5.2.3 <5.3; version=5.3; version=833577ecf3451c7306abb48f221d365c2ee4cc1b; version=efa14c3985828da3163f5372137cb64d992b0f79 <2918419c06088f6709ceb543feb01752779ade4c; version=efa14c3985828da3163f5372137cb64d992b0f79 <6edb818732fc05fda495f5b3a749bd1cee01398b; version=efa14c3985828da3163f5372137cb64d992b0f79 <a9f49e0060301a9bfebeca76739158d0cf91cdf6; version=efa14c3985828da3163f5372137cb64d992b0f79 <c6af94324911ef0846af1a5ce5e049ca736db34b; version=efa14c3985828da3163f5372137cb64d992b0f79 <d88d59faf4e6f9cc4767664206afdb999b10ec77

Published CVSS scores

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

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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
T1499.001OS Exhaustion Flood

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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