ghsa-h345-5w6p-mhwf
Vulnerability from github
Published
2024-12-27 15:31
Modified
2025-01-23 18:31
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

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

drm/amd/display: Fix out-of-bounds access in 'dcn21_link_encoder_create'

An issue was identified in the dcn21_link_encoder_create function where an out-of-bounds access could occur when the hpd_source index was used to reference the link_enc_hpd_regs array. This array has a fixed size and the index was not being checked against the array's bounds before accessing it.

This fix adds a conditional check to ensure that the hpd_source index is within the valid range of the link_enc_hpd_regs array. If the index is out of bounds, the function now returns NULL to prevent undefined behavior.

References:

[ 65.920507] ------------[ cut here ]------------ [ 65.920510] UBSAN: array-index-out-of-bounds in drivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn21/dcn21_resource.c:1312:29 [ 65.920519] index 7 is out of range for type 'dcn10_link_enc_hpd_registers [5]' [ 65.920523] CPU: 3 PID: 1178 Comm: modprobe Tainted: G OE 6.8.0-cleanershaderfeatureresetasdntipmi200nv2132 #13 [ 65.920525] Hardware name: AMD Majolica-RN/Majolica-RN, BIOS WMJ0429N_Weekly_20_04_2 04/29/2020 [ 65.920527] Call Trace: [ 65.920529] [ 65.920532] dump_stack_lvl+0x48/0x70 [ 65.920541] dump_stack+0x10/0x20 [ 65.920543] __ubsan_handle_out_of_bounds+0xa2/0xe0 [ 65.920549] dcn21_link_encoder_create+0xd9/0x140 [amdgpu] [ 65.921009] link_create+0x6d3/0xed0 [amdgpu] [ 65.921355] create_links+0x18a/0x4e0 [amdgpu] [ 65.921679] dc_create+0x360/0x720 [amdgpu] [ 65.921999] ? dmi_matches+0xa0/0x220 [ 65.922004] amdgpu_dm_init+0x2b6/0x2c90 [amdgpu] [ 65.922342] ? console_unlock+0x77/0x120 [ 65.922348] ? dev_printk_emit+0x86/0xb0 [ 65.922354] dm_hw_init+0x15/0x40 [amdgpu] [ 65.922686] amdgpu_device_init+0x26a8/0x33a0 [amdgpu] [ 65.922921] amdgpu_driver_load_kms+0x1b/0xa0 [amdgpu] [ 65.923087] amdgpu_pci_probe+0x1b7/0x630 [amdgpu] [ 65.923087] local_pci_probe+0x4b/0xb0 [ 65.923087] pci_device_probe+0xc8/0x280 [ 65.923087] really_probe+0x187/0x300 [ 65.923087] __driver_probe_device+0x85/0x130 [ 65.923087] driver_probe_device+0x24/0x110 [ 65.923087] __driver_attach+0xac/0x1d0 [ 65.923087] ? __pfxdriverattach+0x10/0x10 [ 65.923087] bus_for_each_dev+0x7d/0xd0 [ 65.923087] driver_attach+0x1e/0x30 [ 65.923087] bus_add_driver+0xf2/0x200 [ 65.923087] driver_register+0x64/0x130 [ 65.923087] ? pfx_amdgpu_init+0x10/0x10 [amdgpu] [ 65.923087] __pci_register_driver+0x61/0x70 [ 65.923087] amdgpu_init+0x7d/0xff0 [amdgpu] [ 65.923087] do_one_initcall+0x49/0x310 [ 65.923087] ? kmalloc_trace+0x136/0x360 [ 65.923087] do_init_module+0x6a/0x270 [ 65.923087] load_module+0x1fce/0x23a0 [ 65.923087] init_module_from_file+0x9c/0xe0 [ 65.923087] ? init_module_from_file+0x9c/0xe0 [ 65.923087] idempotent_init_module+0x179/0x230 [ 65.923087] __x64_sys_finit_module+0x5d/0xa0 [ 65.923087] do_syscall_64+0x76/0x120 [ 65.923087] entry_SYSCALL_64_after_hwframe+0x6e/0x76 [ 65.923087] RIP: 0033:0x7f2d80f1e88d [ 65.923087] Code: 5b 41 5c c3 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 73 b5 0f 00 f7 d8 64 89 01 48 [ 65.923087] RSP: 002b:00007ffc7bc1aa78 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 65.923087] RAX: ffffffffffffffda RBX: 0000564c9c1db130 RCX: 00007f2d80f1e88d [ 65.923087] RDX: 0000000000000000 RSI: 0000564c9c1e5480 RDI: 000000000000000f [ 65.923087] RBP: 0000000000040000 R08: 0000000000000000 R09: 0000000000000002 [ 65.923087] R10: 000000000000000f R11: 0000000000000246 R12: 0000564c9c1e5480 [ 65.923087] R13: 0000564c9c1db260 R14: 0000000000000000 R15: 0000564c9c1e54b0 [ 65.923087] [ 65.923927] ---[ end trace ]---

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{
  "affected": [],
  "aliases": [
    "CVE-2024-56608"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-129"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-27T15:15:20Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix out-of-bounds access in \u0027dcn21_link_encoder_create\u0027\n\nAn issue was identified in the dcn21_link_encoder_create function where\nan out-of-bounds access could occur when the hpd_source index was used\nto reference the link_enc_hpd_regs array. This array has a fixed size\nand the index was not being checked against the array\u0027s bounds before\naccessing it.\n\nThis fix adds a conditional check to ensure that the hpd_source index is\nwithin the valid range of the link_enc_hpd_regs array. If the index is\nout of bounds, the function now returns NULL to prevent undefined\nbehavior.\n\nReferences:\n\n[   65.920507] ------------[ cut here ]------------\n[   65.920510] UBSAN: array-index-out-of-bounds in drivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn21/dcn21_resource.c:1312:29\n[   65.920519] index 7 is out of range for type \u0027dcn10_link_enc_hpd_registers [5]\u0027\n[   65.920523] CPU: 3 PID: 1178 Comm: modprobe Tainted: G           OE      6.8.0-cleanershaderfeatureresetasdntipmi200nv2132 #13\n[   65.920525] Hardware name: AMD Majolica-RN/Majolica-RN, BIOS WMJ0429N_Weekly_20_04_2 04/29/2020\n[   65.920527] Call Trace:\n[   65.920529]  \u003cTASK\u003e\n[   65.920532]  dump_stack_lvl+0x48/0x70\n[   65.920541]  dump_stack+0x10/0x20\n[   65.920543]  __ubsan_handle_out_of_bounds+0xa2/0xe0\n[   65.920549]  dcn21_link_encoder_create+0xd9/0x140 [amdgpu]\n[   65.921009]  link_create+0x6d3/0xed0 [amdgpu]\n[   65.921355]  create_links+0x18a/0x4e0 [amdgpu]\n[   65.921679]  dc_create+0x360/0x720 [amdgpu]\n[   65.921999]  ? dmi_matches+0xa0/0x220\n[   65.922004]  amdgpu_dm_init+0x2b6/0x2c90 [amdgpu]\n[   65.922342]  ? console_unlock+0x77/0x120\n[   65.922348]  ? dev_printk_emit+0x86/0xb0\n[   65.922354]  dm_hw_init+0x15/0x40 [amdgpu]\n[   65.922686]  amdgpu_device_init+0x26a8/0x33a0 [amdgpu]\n[   65.922921]  amdgpu_driver_load_kms+0x1b/0xa0 [amdgpu]\n[   65.923087]  amdgpu_pci_probe+0x1b7/0x630 [amdgpu]\n[   65.923087]  local_pci_probe+0x4b/0xb0\n[   65.923087]  pci_device_probe+0xc8/0x280\n[   65.923087]  really_probe+0x187/0x300\n[   65.923087]  __driver_probe_device+0x85/0x130\n[   65.923087]  driver_probe_device+0x24/0x110\n[   65.923087]  __driver_attach+0xac/0x1d0\n[   65.923087]  ? __pfx___driver_attach+0x10/0x10\n[   65.923087]  bus_for_each_dev+0x7d/0xd0\n[   65.923087]  driver_attach+0x1e/0x30\n[   65.923087]  bus_add_driver+0xf2/0x200\n[   65.923087]  driver_register+0x64/0x130\n[   65.923087]  ? __pfx_amdgpu_init+0x10/0x10 [amdgpu]\n[   65.923087]  __pci_register_driver+0x61/0x70\n[   65.923087]  amdgpu_init+0x7d/0xff0 [amdgpu]\n[   65.923087]  do_one_initcall+0x49/0x310\n[   65.923087]  ? kmalloc_trace+0x136/0x360\n[   65.923087]  do_init_module+0x6a/0x270\n[   65.923087]  load_module+0x1fce/0x23a0\n[   65.923087]  init_module_from_file+0x9c/0xe0\n[   65.923087]  ? init_module_from_file+0x9c/0xe0\n[   65.923087]  idempotent_init_module+0x179/0x230\n[   65.923087]  __x64_sys_finit_module+0x5d/0xa0\n[   65.923087]  do_syscall_64+0x76/0x120\n[   65.923087]  entry_SYSCALL_64_after_hwframe+0x6e/0x76\n[   65.923087] RIP: 0033:0x7f2d80f1e88d\n[   65.923087] Code: 5b 41 5c c3 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d 73 b5 0f 00 f7 d8 64 89 01 48\n[   65.923087] RSP: 002b:00007ffc7bc1aa78 EFLAGS: 00000246 ORIG_RAX: 0000000000000139\n[   65.923087] RAX: ffffffffffffffda RBX: 0000564c9c1db130 RCX: 00007f2d80f1e88d\n[   65.923087] RDX: 0000000000000000 RSI: 0000564c9c1e5480 RDI: 000000000000000f\n[   65.923087] RBP: 0000000000040000 R08: 0000000000000000 R09: 0000000000000002\n[   65.923087] R10: 000000000000000f R11: 0000000000000246 R12: 0000564c9c1e5480\n[   65.923087] R13: 0000564c9c1db260 R14: 0000000000000000 R15: 0000564c9c1e54b0\n[   65.923087]  \u003c/TASK\u003e\n[   65.923927] ---[ end trace ]---",
  "id": "GHSA-h345-5w6p-mhwf",
  "modified": "2025-01-23T18:31:12Z",
  "published": "2024-12-27T15:31:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56608"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08ac5fdb9c6dc34d0ed4bc64ce3c5c3d411b3b53"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5bd410c21037107b83ffbb51dd2d6460f9de9ed1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/63de35a8fcfca59ae8750d469a7eb220c7557baf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f01ddd589e162979421e6914b1c74018633f01e0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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