# CVE-2022-49133: linux: In the Linux kernel, the following vulnerability has been resolved:  drm/amdkfd: svm range restore work deadlock when...

CVE-2022-49133 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49133, released February 26, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-49133
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0027
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 26, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  drm/amdkfd: svm range restore work deadlock when process exit  kfd_process_notifier_release flush svm_range_restore_work which calls svm_range_list_lock_and_flush_work to flush deferred_list work, but if deferred_list work mmput release the last user, it will call exit_mmap -> notifier_release, it is deadlock with below backtrace.  Move flush svm_range_restore_work to kfd_process_wq_release to avoid deadlock. Then svm_range_restore_work take task->mm ref to avoid mm is gone while validating and mapping ranges to GPU.  Workqueue: events svm_range_deferred_list_work [amdgpu] Call Trace:  wait_for_completion+0x94/0x100  __flush_work+0x12a/0x1e0  __cancel_work_timer+0x10e/0x190  cancel_delayed_work_sync+0x13/0x20  kfd_process_notifier_release+0x98/0x2a0 [amdgpu]  __mmu_notifier_release+0x74/0x1f0  exit_mmap+0x170/0x200  mmput+0x5d/0x130  svm_range_deferred_list_work+0x104/0x230 [amdgpu]  process_one_work+0x220/0x3c0

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.17.3-1 | [DEBIAN-CVE-2022-49133](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49133.md) | Feb 26, 2025 |
| Linux | linux Debian 13.5 (trixie) | 5.17.3-1 | [DEBIAN-CVE-2022-49133](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49133.md) | Feb 26, 2025 |
| Linux | linux Debian 14 | 5.17.3-1 | [DEBIAN-CVE-2022-49133](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49133.md) | Feb 26, 2025 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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