CVE-2022-50614

Kernel panic via zero-length PCI test ioctl

Published Dec 8, 2025 · Updated May 11, 2026

Denial of service in Linux 4.15 through 6.0.1 allows local users to panic the kernel through a zero-length PCI endpoint test ioctl. The pci_endpoint_test copy, write, and read handlers pass a caller-supplied zero payload length to dma_map_single(), which rejects zero-length mappings and reaches a kernel BUG. Triggering the panic requires access to the test driver's ioctl device and a configured PCI endpoint test function, and it interrupts the host until recovery.

CVSS severityUnavailable
Unscored
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Linux 4.15 through 6.0.1 allows local users to panic the kernel through a zero-length PCI endpoint test ioctl. The pci_endpoint_test copy, write, and read handlers pass a caller-supplied zero payload length to dma_map_single(), which rejects zero-length mappings and reaches a kernel BUG. Triggering the panic requires access to the test driver's ioctl device and a configured PCI endpoint test function, and it interrupts the host until recovery.

The record

CVE
CVE-2022-50614
Published
Dec 8, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 8, 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=343dc693f7b79885197f9d37dd8b711b0e3ffc8f <0df206bdc6204b758585bbe159a55e23e7917b13
  2. Affected versionversion=343dc693f7b79885197f9d37dd8b711b0e3ffc8f <279116cb0bc5cd8af65d6a00ffe074bd09842f88
  3. Affected versionversion=343dc693f7b79885197f9d37dd8b711b0e3ffc8f <6c01739c2aba19553beb20491b05515af9246f0f
  4. Affected versionversion=343dc693f7b79885197f9d37dd8b711b0e3ffc8f <8e30538eca016de8e252bef174beadecd64239f0
  5. Affected versionversion=343dc693f7b79885197f9d37dd8b711b0e3ffc8f <e5ebcbb4f967af2083d409271aaf7c7d8351603f
  6. Affected versionversion=4.15

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=343dc693f7b79885197f9d37dd8b711b0e3ffc8f <0df206bdc6204b758585bbe159a55e23e7917b13; version=343dc693f7b79885197f9d37dd8b711b0e3ffc8f <279116cb0bc5cd8af65d6a00ffe074bd09842f88; version=343dc693f7b79885197f9d37dd8b711b0e3ffc8f <6c01739c2aba19553beb20491b05515af9246f0f; version=343dc693f7b79885197f9d37dd8b711b0e3ffc8f <8e30538eca016de8e252bef174beadecd64239f0; version=343dc693f7b79885197f9d37dd8b711b0e3ffc8f <e5ebcbb4f967af2083d409271aaf7c7d8351603f; version=4.15

Published CVSS scores

No CVSS assessment is available in this record.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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