CVE-2022-50679Public exploit

Kernel crash via leaked i40e DMA mappings

Published Dec 9, 2025 · Updated May 11, 2026

Resource exhaustion in the i40e driver for the Linux kernel allows local users to crash affected systems through RX ring changes. When i40e_configure_rx_ring replaces RX buffers, it frees rx_bi and reallocates storage without unmapping existing DMA mappings. Root-level access and an Intel Ethernet 700 Series adapter are required; repeated changes exhaust DMA resources and cause allocation failures.

CVSS severity5.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in the i40e driver for the Linux kernel allows local users to crash affected systems through RX ring changes. When i40e_configure_rx_ring replaces RX buffers, it frees rx_bi and reallocates storage without unmapping existing DMA mappings. Root-level access and an Intel Ethernet 700 Series adapter are required; repeated changes exhaust DMA resources and cause allocation failures.

The record

CVE
CVE-2022-50679
Published
Dec 9, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-763, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Dec 9, 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=5.8
  2. Affected versionversion=be1222b585fdc410b8c1dbcc57dd03a00f04eff5 <5f499596dfa3db9b3172645b6de9e1096a669c95
  3. Affected versionversion=be1222b585fdc410b8c1dbcc57dd03a00f04eff5 <94a171c982b8a8137a00721c1e62bc2713435bca
  4. Affected versionversion=be1222b585fdc410b8c1dbcc57dd03a00f04eff5 <aae425efdfd1b1d8452260a3cb49344ebf20b1f5
  5. Affected versionversion=be1222b585fdc410b8c1dbcc57dd03a00f04eff5 <ed5baf3d0a33caaca4cd4073ebb0854cc77a616d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=5.8; version=be1222b585fdc410b8c1dbcc57dd03a00f04eff5 <5f499596dfa3db9b3172645b6de9e1096a669c95; version=be1222b585fdc410b8c1dbcc57dd03a00f04eff5 <94a171c982b8a8137a00721c1e62bc2713435bca; version=be1222b585fdc410b8c1dbcc57dd03a00f04eff5 <aae425efdfd1b1d8452260a3cb49344ebf20b1f5; version=be1222b585fdc410b8c1dbcc57dd03a00f04eff5 <ed5baf3d0a33caaca4cd4073ebb0854cc77a616d

Published CVSS scores

5.5Red HatCVSS: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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-763Release of Invalid Pointer or Reference
T1499Endpoint Denial of Service

Public exploit references

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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