cvelist/2024/50xxx/CVE-2024-50221.json

{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-50221",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/pm: Vangogh: Fix kernel memory out of bounds write\n\nKASAN reports that the GPU metrics table allocated in\nvangogh_tables_init() is not large enough for the memset done in\nsmu_cmn_init_soft_gpu_metrics(). Condensed report follows:\n\n[   33.861314] BUG: KASAN: slab-out-of-bounds in smu_cmn_init_soft_gpu_metrics+0x73/0x200 [amdgpu]\n[   33.861799] Write of size 168 at addr ffff888129f59500 by task mangoapp/1067\n...\n[   33.861808] CPU: 6 UID: 1000 PID: 1067 Comm: mangoapp Tainted: G        W          6.12.0-rc4 #356 1a56f59a8b5182eeaf67eb7cb8b13594dd23b544\n[   33.861816] Tainted: [W]=WARN\n[   33.861818] Hardware name: Valve Galileo/Galileo, BIOS F7G0107 12/01/2023\n[   33.861822] Call Trace:\n[   33.861826]  <TASK>\n[   33.861829]  dump_stack_lvl+0x66/0x90\n[   33.861838]  print_report+0xce/0x620\n[   33.861853]  kasan_report+0xda/0x110\n[   33.862794]  kasan_check_range+0xfd/0x1a0\n[   33.862799]  __asan_memset+0x23/0x40\n[   33.862803]  smu_cmn_init_soft_gpu_metrics+0x73/0x200 [amdgpu 13b1bc364ec578808f676eba412c20eaab792779]\n[   33.863306]  vangogh_get_gpu_metrics_v2_4+0x123/0xad0 [amdgpu 13b1bc364ec578808f676eba412c20eaab792779]\n[   33.864257]  vangogh_common_get_gpu_metrics+0xb0c/0xbc0 [amdgpu 13b1bc364ec578808f676eba412c20eaab792779]\n[   33.865682]  amdgpu_dpm_get_gpu_metrics+0xcc/0x110 [amdgpu 13b1bc364ec578808f676eba412c20eaab792779]\n[   33.866160]  amdgpu_get_gpu_metrics+0x154/0x2d0 [amdgpu 13b1bc364ec578808f676eba412c20eaab792779]\n[   33.867135]  dev_attr_show+0x43/0xc0\n[   33.867147]  sysfs_kf_seq_show+0x1f1/0x3b0\n[   33.867155]  seq_read_iter+0x3f8/0x1140\n[   33.867173]  vfs_read+0x76c/0xc50\n[   33.867198]  ksys_read+0xfb/0x1d0\n[   33.867214]  do_syscall_64+0x90/0x160\n...\n[   33.867353] Allocated by task 378 on cpu 7 at 22.794876s:\n[   33.867358]  kasan_save_stack+0x33/0x50\n[   33.867364]  kasan_save_track+0x17/0x60\n[   33.867367]  __kasan_kmalloc+0x87/0x90\n[   33.867371]  vangogh_init_smc_tables+0x3f9/0x840 [amdgpu]\n[   33.867835]  smu_sw_init+0xa32/0x1850 [amdgpu]\n[   33.868299]  amdgpu_device_init+0x467b/0x8d90 [amdgpu]\n[   33.868733]  amdgpu_driver_load_kms+0x19/0xf0 [amdgpu]\n[   33.869167]  amdgpu_pci_probe+0x2d6/0xcd0 [amdgpu]\n[   33.869608]  local_pci_probe+0xda/0x180\n[   33.869614]  pci_device_probe+0x43f/0x6b0\n\nEmpirically we can confirm that the former allocates 152 bytes for the\ntable, while the latter memsets the 168 large block.\n\nRoot cause appears that when GPU metrics tables for v2_4 parts were added\nit was not considered to enlarge the table to fit.\n\nThe fix in this patch is rather \"brute force\" and perhaps later should be\ndone in a smarter way, by extracting and consolidating the part version to\nsize logic to a common helper, instead of brute forcing the largest\npossible allocation. Nevertheless, for now this works and fixes the out of\nbounds write.\n\nv2:\n * Drop impossible v3_0 case. (Mario)\n\n(cherry picked from commit 0880f58f9609f0200483a49429af0f050d281703)"
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "41cec40bc9ba",
                                            "version_value": "f111de0f0103"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "6.6",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "6.6",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.6.63",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.11.7",
                                                        "lessThanOrEqual": "6.11.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.12",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
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    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/f111de0f010308949254ee1cc45df8e6b8e1d7d4",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/f111de0f010308949254ee1cc45df8e6b8e1d7d4"
            },
            {
                "url": "https://git.kernel.org/stable/c/f8fd9f0d57af4f8f48b383ec28287af85b47cb9f",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/f8fd9f0d57af4f8f48b383ec28287af85b47cb9f"
            },
            {
                "url": "https://git.kernel.org/stable/c/4aa923a6e6406b43566ef6ac35a3d9a3197fa3e8",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/4aa923a6e6406b43566ef6ac35a3d9a3197fa3e8"
            }
        ]
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    "generator": {
        "engine": "bippy-8e903de6a542"
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