CVE-2022-49695

Kernel memory corruption via type-confused XDP frame free

Published Feb 26, 2025 · Updated Aug 5, 2026

Use-after-free in the Linux kernel igb XDP teardown allows local users with CAP_NET_ADMIN to corrupt kernel memory during device closure. igb_clean_tx_ring treats pending xdp_frame objects as sk_buff objects during cleanup and frees them through the wrong release path. Exploitation requires an igb NIC in XDP mode and CAP_NET_ADMIN access to redirect traffic and close or reconfigure the interface; a trigger can crash the kernel or enable kernel memory disclosure, writes, or code execution.

CVSS severity7.8
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel igb XDP teardown allows local users with CAP_NET_ADMIN to corrupt kernel memory during device closure. igb_clean_tx_ring treats pending xdp_frame objects as sk_buff objects during cleanup and frees them through the wrong release path. Exploitation requires an igb NIC in XDP mode and CAP_NET_ADMIN access to redirect traffic and close or reconfigure the interface; a trigger can crash the kernel or enable kernel memory disclosure, writes, or code execution.

The record

CVE
CVE-2022-49695
Published
Feb 26, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=5.10
  2. Affected versionversion=9cbc948b5a20c9c054d9631099c0426c16da546b <2af944210dc23d43d8208dafac4df7be7e3c168b
  3. Affected versionversion=9cbc948b5a20c9c054d9631099c0426c16da546b <3f6a57ee8544ec3982f8a3cbcbf4aea7d47eb9ec
  4. Affected versionversion=9cbc948b5a20c9c054d9631099c0426c16da546b <68a0ed06dcd5d3ea732d011c0b83d66e4791f521
  5. Affected versionversion=9cbc948b5a20c9c054d9631099c0426c16da546b <c12a2c9b1b460ed72e6b3c33aac1ef51b0329b66

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=5.10; version=9cbc948b5a20c9c054d9631099c0426c16da546b <2af944210dc23d43d8208dafac4df7be7e3c168b; version=9cbc948b5a20c9c054d9631099c0426c16da546b <3f6a57ee8544ec3982f8a3cbcbf4aea7d47eb9ec; version=9cbc948b5a20c9c054d9631099c0426c16da546b <68a0ed06dcd5d3ea732d011c0b83d66e4791f521; version=9cbc948b5a20c9c054d9631099c0426c16da546b <c12a2c9b1b460ed72e6b3c33aac1ef51b0329b66

Published CVSS scores

7.8LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

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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