CVE-2026-74450

drm/amd/pm: fix pptable use-after-free

State: Published
Severity: 7.8 High
Published: Aug 15, 2026
Updated: Oct 16, 2026
Reserved: Aug 15, 2026

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)

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	1684d3ba488529266ce6f97b88076bd185f4790e to before 3fbb3ac75000e3187f500a91a4099b24206866a1Affected 1684d3ba488529266ce6f97b88076bd185f4790e to before 9efc767335234cf7a892e46d45cd453b711421e7Affected 1684d3ba488529266ce6f97b88076bd185f4790e to before 81b5af1fb0f14cace6c3b3130a05e5602a597820Affected 1684d3ba488529266ce6f97b88076bd185f4790e to before 8c685df5c3b261c42505110965b42f9a754eb9b7Affected 1684d3ba488529266ce6f97b88076bd185f4790e to before b628f2c6feb3a115ea72d3120a2bd94afc5163dfAffected 1684d3ba488529266ce6f97b88076bd185f4790e to before bb493058c35c8676e48269ab6732688ea733d23cAffected
LinuxLinux	4.9Affected before 4.9Not affected 6.1.184 through 6.1.Not affected 6.6.153 through 6.6.Not affected 6.12.105 through 6.12.Not affected 6.18.46 through 6.18.Not affected 7.1.8 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

1684d3ba488529266ce6f97b88076bd185f4790e to before 3fbb3ac75000e3187f500a91a4099b24206866a1Affected
1684d3ba488529266ce6f97b88076bd185f4790e to before 9efc767335234cf7a892e46d45cd453b711421e7Affected
1684d3ba488529266ce6f97b88076bd185f4790e to before 81b5af1fb0f14cace6c3b3130a05e5602a597820Affected
1684d3ba488529266ce6f97b88076bd185f4790e to before 8c685df5c3b261c42505110965b42f9a754eb9b7Affected
1684d3ba488529266ce6f97b88076bd185f4790e to before b628f2c6feb3a115ea72d3120a2bd94afc5163dfAffected
1684d3ba488529266ce6f97b88076bd185f4790e to before bb493058c35c8676e48269ab6732688ea733d23cAffected

LinuxLinux

4.9Affected
before 4.9Not affected
6.1.184 through 6.1.*Not affected
6.6.153 through 6.6.*Not affected
6.12.105 through 6.12.*Not affected
6.18.46 through 6.18.*Not affected
7.1.8 through 7.1.*Not affected
7.2 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.