ghsa-xc5v-www3-4jvj
Vulnerability from github
Published
2025-01-19 12:31
Modified
2025-01-19 12:31
Details

In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: wq_release signals dma_fence only when available

kfd_process_wq_release() signals eviction fence by dma_fence_signal() which wanrs if dma_fence is NULL.

kfd_process->ef is initialized by kfd_process_device_init_vm() through ioctl. That means the fence is NULL for a new created kfd_process, and close a kfd_process right after open it will trigger the warning.

This commit conditionally signals the eviction fence in kfd_process_wq_release() only when it is available.

[ 503.660882] WARNING: CPU: 0 PID: 9 at drivers/dma-buf/dma-fence.c:467 dma_fence_signal+0x74/0xa0 [ 503.782940] Workqueue: kfd_process_wq kfd_process_wq_release [amdgpu] [ 503.789640] RIP: 0010:dma_fence_signal+0x74/0xa0 [ 503.877620] Call Trace: [ 503.880066] [ 503.882168] ? __warn+0xcd/0x260 [ 503.885407] ? dma_fence_signal+0x74/0xa0 [ 503.889416] ? report_bug+0x288/0x2d0 [ 503.893089] ? handle_bug+0x53/0xa0 [ 503.896587] ? exc_invalid_op+0x14/0x50 [ 503.900424] ? asm_exc_invalid_op+0x16/0x20 [ 503.904616] ? dma_fence_signal+0x74/0xa0 [ 503.908626] kfd_process_wq_release+0x6b/0x370 [amdgpu] [ 503.914081] process_one_work+0x654/0x10a0 [ 503.918186] worker_thread+0x6c3/0xe70 [ 503.921943] ? srso_alias_return_thunk+0x5/0xfbef5 [ 503.926735] ? srso_alias_return_thunk+0x5/0xfbef5 [ 503.931527] ? __kthread_parkme+0x82/0x140 [ 503.935631] ? __pfx_worker_thread+0x10/0x10 [ 503.939904] kthread+0x2a8/0x380 [ 503.943132] ? __pfx_kthread+0x10/0x10 [ 503.946882] ret_from_fork+0x2d/0x70 [ 503.950458] ? __pfx_kthread+0x10/0x10 [ 503.954210] ret_from_fork_asm+0x1a/0x30 [ 503.958142] [ 503.960328] ---[ end trace 0000000000000000 ]---

(cherry picked from commit 2774ef7625adb5fb9e9265c26a59dca7b8fd171e)

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{
   affected: [],
   aliases: [
      "CVE-2024-57920",
   ],
   database_specific: {
      cwe_ids: [],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2025-01-19T12:15:26Z",
      severity: null,
   },
   details: "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: wq_release signals dma_fence only when available\n\nkfd_process_wq_release() signals eviction fence by\ndma_fence_signal() which wanrs if dma_fence\nis NULL.\n\nkfd_process->ef is initialized by kfd_process_device_init_vm()\nthrough ioctl. That means the fence is NULL for a new\ncreated kfd_process, and close a kfd_process right\nafter open it will trigger the warning.\n\nThis commit conditionally signals the eviction fence\nin kfd_process_wq_release() only when it is available.\n\n[  503.660882] WARNING: CPU: 0 PID: 9 at drivers/dma-buf/dma-fence.c:467 dma_fence_signal+0x74/0xa0\n[  503.782940] Workqueue: kfd_process_wq kfd_process_wq_release [amdgpu]\n[  503.789640] RIP: 0010:dma_fence_signal+0x74/0xa0\n[  503.877620] Call Trace:\n[  503.880066]  <TASK>\n[  503.882168]  ? __warn+0xcd/0x260\n[  503.885407]  ? dma_fence_signal+0x74/0xa0\n[  503.889416]  ? report_bug+0x288/0x2d0\n[  503.893089]  ? handle_bug+0x53/0xa0\n[  503.896587]  ? exc_invalid_op+0x14/0x50\n[  503.900424]  ? asm_exc_invalid_op+0x16/0x20\n[  503.904616]  ? dma_fence_signal+0x74/0xa0\n[  503.908626]  kfd_process_wq_release+0x6b/0x370 [amdgpu]\n[  503.914081]  process_one_work+0x654/0x10a0\n[  503.918186]  worker_thread+0x6c3/0xe70\n[  503.921943]  ? srso_alias_return_thunk+0x5/0xfbef5\n[  503.926735]  ? srso_alias_return_thunk+0x5/0xfbef5\n[  503.931527]  ? __kthread_parkme+0x82/0x140\n[  503.935631]  ? __pfx_worker_thread+0x10/0x10\n[  503.939904]  kthread+0x2a8/0x380\n[  503.943132]  ? __pfx_kthread+0x10/0x10\n[  503.946882]  ret_from_fork+0x2d/0x70\n[  503.950458]  ? __pfx_kthread+0x10/0x10\n[  503.954210]  ret_from_fork_asm+0x1a/0x30\n[  503.958142]  </TASK>\n[  503.960328] ---[ end trace 0000000000000000 ]---\n\n(cherry picked from commit 2774ef7625adb5fb9e9265c26a59dca7b8fd171e)",
   id: "GHSA-xc5v-www3-4jvj",
   modified: "2025-01-19T12:31:26Z",
   published: "2025-01-19T12:31:26Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2024-57920",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/a993d319aebb7cce8a10c6e685344b7c2ad5c4c2",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/c8243def299793ac6c85fdc1086089c800c1051a",
      },
   ],
   schema_version: "1.4.0",
   severity: [],
}


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