CVE-2026-74450
N/A
N/A
Summary
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)
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 1684d3ba488529266ce6f97b88076bd185f4790e < b628f2c6feb3a115ea72d3120a2bd94afc5163df | affected |
| Linux | Linux | 1684d3ba488529266ce6f97b88076bd185f4790e < bb493058c35c8676e48269ab6732688ea733d23c | affected |
| Linux | Linux | 4.9 | affected |
| Linux | Linux | 0 < 4.9 | unaffected |
| Linux | Linux | 7.1.8 <= 7.1.* | unaffected |
| Linux | Linux | 7.2-rc6 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/b628f2c6feb3a115ea72d3120a2bd94afc5163df
- https://git.kernel.org/stable/c/bb493058c35c8676e48269ab6732688ea733d23c
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