CVE-2022-50004

Kernel crash via unchecked metadata destination device

Published Jun 18, 2025 · Updated May 23, 2026

Null pointer dereference in affected Linux kernel versions allows local users to crash the kernel via xfrm packet transmission. xfrm_lookup_with_ifid() unconditionally dereferences dst_orig->dev while checking for a loopback device when an skb carrying metadata_dst has no device and no matching policy. Triggering the fault requires local low-privileged packet transmission through an xfrm interface and interrupts the host by crashing the kernel.

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

Null pointer dereference in affected Linux kernel versions allows local users to crash the kernel via xfrm packet transmission. xfrm_lookup_with_ifid() unconditionally dereferences dst_orig->dev while checking for a loopback device when an skb carrying metadata_dst has no device and no matching policy. Triggering the fault requires local low-privileged packet transmission through an xfrm interface and interrupts the host by crashing the kernel.

The record

CVE
CVE-2022-50004
Published
Jun 18, 2025
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 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

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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=2d151d39073aff498358543801fca0f670fea981 <17ecd4a4db4783392edd4944f5e8268205083f70
  2. Affected versionversion=2d151d39073aff498358543801fca0f670fea981 <96f2758a6d028d1ac08616de9c3c7ff2a122ecf1
  3. Affected versionversion=2d151d39073aff498358543801fca0f670fea981 <e26d676c1f9f335510780b566a10475c47ce03d0
  4. Affected versionversion=5.10.118 <5.10.140
  5. Affected versionversion=5.15
  6. Affected versionversion=5b7f84b1f9f46327360a64c529433fa0d68cc3f4 <2761612bcde9776dd93ce60ce55ef0b7c7329153

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2d151d39073aff498358543801fca0f670fea981 <17ecd4a4db4783392edd4944f5e8268205083f70; version=2d151d39073aff498358543801fca0f670fea981 <96f2758a6d028d1ac08616de9c3c7ff2a122ecf1; version=2d151d39073aff498358543801fca0f670fea981 <e26d676c1f9f335510780b566a10475c47ce03d0; version=5.10.118 <5.10.140; version=5.15; version=5b7f84b1f9f46327360a64c529433fa0d68cc3f4 <2761612bcde9776dd93ce60ce55ef0b7c7329153

Published CVSS scores

5.5NIST NVDCVSS: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-476NULL Pointer Dereference
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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