CVE-2026-74450
drm/amd/pm: fix pptable use-after-free
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/pm: fix pptable use-after-free amdgpu_dpm_get_pp_table() returns a pointer to a driver-owned power table after dropping adev->pm.mutex. The sysfs path then copies from that pointer. A concurrent pp_table write can replace and free the allocation during the copy, causing a use-after-free. Change the DPM interface to copy into caller-provided storage while the mutex is held. Keep the size-only query for attribute discovery without exposing the driver-owned pointer. (cherry picked from commit f6eed7acfd30099ef7baeb6ba45bb59daad80631)
INFO
Published Date :
Aug. 15, 2026, 1:17 p.m.
Last Modified :
Aug. 17, 2026, 6:19 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Apply the provided patch to the Linux kernel.
- Copy power table data while holding the mutex.
- Keep size-only query for attribute discovery.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-74450.
| URL | Resource |
|---|---|
| https://git.kernel.org/stable/c/b628f2c6feb3a115ea72d3120a2bd94afc5163df | |
| https://git.kernel.org/stable/c/bb493058c35c8676e48269ab6732688ea733d23c |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74450 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-74450
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-74450 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74450 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '1684d3ba488529266ce6f97b88076bd185f4790e', 'lessThan': 'b628f2c6feb3a115ea72d3120a2bd94afc5163df', 'versionType': 'git'}, {'status': 'affected', 'version': '1684d3ba488529266ce6f97b88076bd185f4790e', 'lessThan': 'bb493058c35c8676e48269ab6732688ea733d23c', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/amd/pm/amdgpu_dpm.c', 'drivers/gpu/drm/amd/pm/amdgpu_pm.c', 'drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.9'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.9', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc6', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/amd/pm/amdgpu_dpm.c', 'drivers/gpu/drm/amd/pm/amdgpu_pm.c', 'drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '1684d3ba488529266ce6f97b88076bd185f4790e', 'lessThan': 'b628f2c6feb3a115ea72d3120a2bd94afc5163df', 'versionType': 'git'}, {'status': 'affected', 'version': '1684d3ba488529266ce6f97b88076bd185f4790e', 'lessThan': 'bb493058c35c8676e48269ab6732688ea733d23c', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/amd/pm/amdgpu_dpm.c', 'drivers/gpu/drm/amd/pm/amdgpu_pm.c', 'drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.9'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.9', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/amd/pm/amdgpu_dpm.c', 'drivers/gpu/drm/amd/pm/amdgpu_pm.c', 'drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '1684d3ba488529266ce6f97b88076bd185f4790e', 'lessThan': 'b628f2c6feb3a115ea72d3120a2bd94afc5163df', 'versionType': 'git'}, {'status': 'affected', 'version': '1684d3ba488529266ce6f97b88076bd185f4790e', 'lessThan': 'bb493058c35c8676e48269ab6732688ea733d23c', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/amd/pm/amdgpu_dpm.c', 'drivers/gpu/drm/amd/pm/amdgpu_pm.c', 'drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.9'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.9', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc6', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/amd/pm/amdgpu_dpm.c', 'drivers/gpu/drm/amd/pm/amdgpu_pm.c', 'drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: drm/amd/pm: fix pptable use-after-free amdgpu_dpm_get_pp_table() returns a pointer to a driver-owned power table after dropping adev->pm.mutex. The sysfs path then copies from that pointer. A concurrent pp_table write can replace and free the allocation during the copy, causing a use-after-free. Change the DPM interface to copy into caller-provided storage while the mutex is held. Keep the size-only query for attribute discovery without exposing the driver-owned pointer. (cherry picked from commit f6eed7acfd30099ef7baeb6ba45bb59daad80631) Added Reference https://git.kernel.org/stable/c/b628f2c6feb3a115ea72d3120a2bd94afc5163df Added Reference https://git.kernel.org/stable/c/bb493058c35c8676e48269ab6732688ea733d23c