CVE-2024-56608

{"id": "CVE-2024-56608", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2024-12-27T15:15:20.283", "references": [{"url": "https://git.kernel.org/stable/c/08ac5fdb9c6dc34d0ed4bc64ce3c5c3d411b3b53", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5bd410c21037107b83ffbb51dd2d6460f9de9ed1", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/63de35a8fcfca59ae8750d469a7eb220c7557baf", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f01ddd589e162979421e6914b1c74018633f01e0", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-129"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix out-of-bounds access in 'dcn21_link_encoder_create'\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's 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 'dcn10_link_enc_hpd_registers [5]'\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] <TASK>\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 <48> 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] </TASK>\n[ 65.923927] ---[ end trace ]---"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: Se corrige el acceso fuera de los l\u00edmites en 'dcn21_link_encoder_create' Se identific\u00f3 un problema en la funci\u00f3n dcn21_link_encoder_create donde podr\u00eda ocurrir un acceso fuera de los l\u00edmites cuando se us\u00f3 el \u00edndice hpd_source para hacer referencia a la matriz link_enc_hpd_regs. Esta matriz tiene un tama\u00f1o fijo y el \u00edndice no se estaba verificando con los l\u00edmites de la matriz antes de acceder a ella. Esta correcci\u00f3n agrega una verificaci\u00f3n condicional para garantizar que el \u00edndice hpd_source est\u00e9 dentro del rango v\u00e1lido de la matriz link_enc_hpd_regs. Si el \u00edndice est\u00e1 fuera de los l\u00edmites, la funci\u00f3n ahora devuelve NULL para evitar un comportamiento indefinido. Referencias: [ 65.920507] ------------[ cortar aqu\u00ed ]------------ [ 65.920510] UBSAN: array-index-out-of-bounds en drivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn21/dcn21_resource.c:1312:29 [ 65.920519] el \u00edndice 7 est\u00e1 fuera de rango para el tipo 'dcn10_link_enc_hpd_registers [5]' [ 65.920523] CPU: 3 PID: 1178 Comm: modprobe Tainted: G OE 6.8.0-cleanershaderfeatureresetasdntipmi200nv2132 #13 [ 65.920525] Nombre del hardware: AMD Majolica-RN/Majolica-RN, BIOS WMJ0429N_Semanal_20_04_2 29/04/2020 [ 65.920527] Seguimiento de llamadas: [ 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] 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] realmente_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] ? __pfx___driver_attach+0x10/0x10 [ 65.923087] bus_para_cada_dispositivo+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] hacer_una_llamada_init+0x49/0x310 [ 65.923087] ? kmalloc_trace+0x136/0x360 [ 65.923087] hacer_init_module+0x6a/0x270 [ 65.923087] cargar_m\u00f3dulo+0x1fce/0x23a0 [ 65.923087] iniciar_m\u00f3dulo_desde_archivo+0x9c/0xe0 [ 65.923087] ? m\u00f3dulo_de_inicio_desde_archivo+0x9c/0xe0 [ 65.923087] m\u00f3dulo_de_inicio_idempotente+0x179/0x230 [ 65.923087] m\u00f3dulo_de_finici\u00f3n_del_sistema_x64+0x5d/0xa0 [ 65.923087] llamada_al_sistema_64+0x76/0x120 [ 65.923087] llamada_al_sistema_64_despu\u00e9s_de_hwframe+0x6e/0x76 [ 65.923087] RIP: 0033:0x7f2d80f1e88d [ 65.923087] C\u00f3digo: 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 &lt;48&gt; 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] ---[ fin del seguimiento ]---"}], "lastModified": "2025-01-23T17:15:15.747", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "75E05E0A-C898-433A-8E50-6D9EC8646A64", "versionEndExcluding": "6.12.5"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}