CVE-2022-49843

drm/amdkfd: Migrate in CPU page fault use current mm

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Migrate in CPU page fault use current mm migrate_vma_setup shows below warning because we don't hold another
process mm mmap_lock. We should use current vmf->vma->vm_mm instead, the
caller already hold current mmap lock inside CPU page fault handler. WARNING: CPU: 10 PID: 3054 at include/linux/mmap_lock.h:155 find_vma Call Trace: walk_page_range+0x76/0x150 migrate_vma_setup+0x18a/0x640 svm_migrate_vram_to_ram+0x245/0xa10 [amdgpu] svm_migrate_to_ram+0x36f/0x470 [amdgpu] do_swap_page+0xcfe/0xec0 __handle_mm_fault+0x96b/0x15e0 handle_mm_fault+0x13f/0x3e0 do_user_addr_fault+0x1e7/0x690

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Migrate in CPU page fault use current mm migrate_vma_setup shows below warning because we don't hold another process mm mmap_lock. We should use current vmf->vma->vm_mm instead, the caller already hold current mmap lock inside CPU page fault handler. WARNING: CPU: 10 PID: 3054 at include/linux/mmap_lock.h:155 find_vma Call Trace: walk_page_range+0x76/0x150 migrate_vma_setup+0x18a/0x640 svm_migrate_vram_to_ram+0x245/0xa10 [amdgpu] svm_migrate_to_ram+0x36f/0x470 [amdgpu] do_swap_page+0xcfe/0xec0 __handle_mm_fault+0x96b/0x15e0 handle_mm_fault+0x13f/0x3e0 do_user_addr_fault+0x1e7/0x690

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2025-05-01 CVE Reserved
2025-05-01 CVE Published
2025-05-01 CVE Updated
---------- EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/3a876060892ba52dd67d197c78b955e62657d906	2022-09-13
https://git.kernel.org/stable/c/1dea25e25acd990d7657940ffcab8354c28fa292	2022-11-16
https://git.kernel.org/stable/c/128e284c6cccf5875261569fa3bb07558870c17f	2022-11-16

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< mainline Search vendor "Linux" for product "Linux Kernel" and version " < mainline"		en		Affected