CVE-2022-50844

Local denial of service via callback type mismatch

Published Dec 30, 2025 · Updated Dec 30, 2025

Denial of service in the Linux kernel amdgpu driver allows local users to kill a thread or panic the kernel through an overclocking callback. The amd_pm_funcs odn_edit_dpm_table prototype declares its command argument as u32, while both implementations and downstream callbacks require enum PP_OD_DPM_TABLE_COMMAND, causing kCFI target validation to reject the indirect call. Exploitation requires local low-privileged access, an AMD GPU, and a kernel built with Clang kCFI; the reported consequence is service interruption.

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

Denial of service in the Linux kernel amdgpu driver allows local users to kill a thread or panic the kernel through an overclocking callback. The amd_pm_funcs odn_edit_dpm_table prototype declares its command argument as u32, while both implementations and downstream callbacks require enum PP_OD_DPM_TABLE_COMMAND, causing kCFI target validation to reject the indirect call. Exploitation requires local low-privileged access, an AMD GPU, and a kernel built with Clang kCFI; the reported consequence is service interruption.

The record

CVE
CVE-2022-50844
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 2025Record 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <24cba9d865157c9e23128fbcf8b86f5da9570edd
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <36217f676b55932a12d6732c95388150015fdee6
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9606bbc271ac86c266d1f4a0285dd69b3fda2d0f
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e4d0ef752081e7aa6ffb7ccac11c499c732a2e05
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f9084e9930db562bdcd47fa199a66fb45e16dab5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <24cba9d865157c9e23128fbcf8b86f5da9570edd; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <36217f676b55932a12d6732c95388150015fdee6; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9606bbc271ac86c266d1f4a0285dd69b3fda2d0f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e4d0ef752081e7aa6ffb7ccac11c499c732a2e05; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f9084e9930db562bdcd47fa199a66fb45e16dab5

Published CVSS scores

5.5Amazon LinuxCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

T1499Endpoint Denial of Service

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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