CVE-2022-49530

Kernel memory corruption via premature power-table free

Published Feb 26, 2025 · Updated Aug 5, 2026

Double free in AMD GPU power management in affected Linux kernel versions allows local users to trigger memory corruption during initialization. The si_parse_power_table function frees adev->pm.dpm.ps after a member allocation failure without clearing the pointer, and si_dpm_fini later frees the same array while its count can remain stale. Reachability requires the AMD Southern Islands power-management initialization path and a member allocation failure; cleanup can then access uninitialized state, use freed memory, or crash the host.

CVSS severity7.8
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double free in AMD GPU power management in affected Linux kernel versions allows local users to trigger memory corruption during initialization. The si_parse_power_table function frees adev->pm.dpm.ps after a member allocation failure without clearing the pointer, and si_dpm_fini later frees the same array while its count can remain stale. Reachability requires the AMD Southern Islands power-management initialization path and a member allocation failure; cleanup can then access uninitialized state, use freed memory, or crash the host.

The record

CVE
CVE-2022-49530
Published
Feb 26, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-415
Attack vector
local
Privileges
authenticated

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=4.9
  2. Affected versionversion=841686df9f7d2942cfd94d024b8591fa3f74ef7c <2615464854505188f909d0c07c37a6623693b5c7
  3. Affected versionversion=841686df9f7d2942cfd94d024b8591fa3f74ef7c <43eb9b667b95f2a31c63e8949b0d2161b9be59c3
  4. Affected versionversion=841686df9f7d2942cfd94d024b8591fa3f74ef7c <6c5bdaa1325be7f04b79ea992ab216739192d342
  5. Affected versionversion=841686df9f7d2942cfd94d024b8591fa3f74ef7c <a5ce7051db044290b1a95045ff03c249005a3aa4
  6. Affected versionversion=841686df9f7d2942cfd94d024b8591fa3f74ef7c <af832028af6f44c6c45645757079c4ed6884ade5
  7. Affected versionversion=841686df9f7d2942cfd94d024b8591fa3f74ef7c <c0e811c4ccf3b42705976285e3a94cc82dea7300
  8. Affected versionversion=841686df9f7d2942cfd94d024b8591fa3f74ef7c <ca1ce206894dd976275c78ee38dbc19873f22de9
  9. Affected versionversion=841686df9f7d2942cfd94d024b8591fa3f74ef7c <f3fa2becf2fc25b6ac7cf8d8b1a2e4a86b3b72bd
  10. Affected versionversion=841686df9f7d2942cfd94d024b8591fa3f74ef7c <fd2eff8b9dcbe469c3b7bbbc7083ab5ed94de07b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.9; version=841686df9f7d2942cfd94d024b8591fa3f74ef7c <2615464854505188f909d0c07c37a6623693b5c7; version=841686df9f7d2942cfd94d024b8591fa3f74ef7c <43eb9b667b95f2a31c63e8949b0d2161b9be59c3; version=841686df9f7d2942cfd94d024b8591fa3f74ef7c <6c5bdaa1325be7f04b79ea992ab216739192d342; version=841686df9f7d2942cfd94d024b8591fa3f74ef7c <a5ce7051db044290b1a95045ff03c249005a3aa4; version=841686df9f7d2942cfd94d024b8591fa3f74ef7c <af832028af6f44c6c45645757079c4ed6884ade5; version=841686df9f7d2942cfd94d024b8591fa3f74ef7c <c0e811c4ccf3b42705976285e3a94cc82dea7300; version=841686df9f7d2942cfd94d024b8591fa3f74ef7c <ca1ce206894dd976275c78ee38dbc19873f22de9; version=841686df9f7d2942cfd94d024b8591fa3f74ef7c <f3fa2becf2fc25b6ac7cf8d8b1a2e4a86b3b72bd; version=841686df9f7d2942cfd94d024b8591fa3f74ef7c <fd2eff8b9dcbe469c3b7bbbc7083ab5ed94de07b

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS: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

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-415Double Free

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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