{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2024-43901",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-08-17T09:11:59.292Z",
        "datePublished": "2024-08-26T10:11:00.255Z",
        "dateUpdated": "2024-09-15T17:55:11.928Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2024-09-15T17:55:11.928Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix NULL pointer dereference for DTN log in DCN401\n\nWhen users run the command:\n\ncat /sys/kernel/debug/dri/0/amdgpu_dm_dtn_log\n\nThe following NULL pointer dereference happens:\n\n[  +0.000003] BUG: kernel NULL pointer dereference, address: NULL\n[  +0.000005] #PF: supervisor instruction fetch in kernel mode\n[  +0.000002] #PF: error_code(0x0010) - not-present page\n[  +0.000002] PGD 0 P4D 0\n[  +0.000004] Oops: 0010 [#1] PREEMPT SMP NOPTI\n[  +0.000003] RIP: 0010:0x0\n[  +0.000008] Code: Unable to access opcode bytes at 0xffffffffffffffd6.\n[...]\n[  +0.000002] PKRU: 55555554\n[  +0.000002] Call Trace:\n[  +0.000002]  <TASK>\n[  +0.000003]  ? show_regs+0x65/0x70\n[  +0.000006]  ? __die+0x24/0x70\n[  +0.000004]  ? page_fault_oops+0x160/0x470\n[  +0.000006]  ? do_user_addr_fault+0x2b5/0x690\n[  +0.000003]  ? prb_read_valid+0x1c/0x30\n[  +0.000005]  ? exc_page_fault+0x8c/0x1a0\n[  +0.000005]  ? asm_exc_page_fault+0x27/0x30\n[  +0.000012]  dcn10_log_color_state+0xf9/0x510 [amdgpu]\n[  +0.000306]  ? srso_alias_return_thunk+0x5/0xfbef5\n[  +0.000003]  ? vsnprintf+0x2fb/0x600\n[  +0.000009]  dcn10_log_hw_state+0xfd0/0xfe0 [amdgpu]\n[  +0.000218]  ? __mod_memcg_lruvec_state+0xe8/0x170\n[  +0.000008]  ? srso_alias_return_thunk+0x5/0xfbef5\n[  +0.000002]  ? debug_smp_processor_id+0x17/0x20\n[  +0.000003]  ? srso_alias_return_thunk+0x5/0xfbef5\n[  +0.000002]  ? srso_alias_return_thunk+0x5/0xfbef5\n[  +0.000002]  ? set_ptes.isra.0+0x2b/0x90\n[  +0.000004]  ? srso_alias_return_thunk+0x5/0xfbef5\n[  +0.000002]  ? _raw_spin_unlock+0x19/0x40\n[  +0.000004]  ? srso_alias_return_thunk+0x5/0xfbef5\n[  +0.000002]  ? do_anonymous_page+0x337/0x700\n[  +0.000004]  dtn_log_read+0x82/0x120 [amdgpu]\n[  +0.000207]  full_proxy_read+0x66/0x90\n[  +0.000007]  vfs_read+0xb0/0x340\n[  +0.000005]  ? __count_memcg_events+0x79/0xe0\n[  +0.000002]  ? srso_alias_return_thunk+0x5/0xfbef5\n[  +0.000003]  ? count_memcg_events.constprop.0+0x1e/0x40\n[  +0.000003]  ? handle_mm_fault+0xb2/0x370\n[  +0.000003]  ksys_read+0x6b/0xf0\n[  +0.000004]  __x64_sys_read+0x19/0x20\n[  +0.000003]  do_syscall_64+0x60/0x130\n[  +0.000004]  entry_SYSCALL_64_after_hwframe+0x6e/0x76\n[  +0.000003] RIP: 0033:0x7fdf32f147e2\n[...]\n\nThis error happens when the color log tries to read the gamut remap\ninformation from DCN401 which is not initialized in the dcn401_dpp_funcs\nwhich leads to a null pointer dereference. This commit addresses this\nissue by adding a proper guard to access the gamut_remap callback in\ncase the specific ASIC did not implement this function."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c"
                    ],
                    "versions": [
                        {
                            "version": "1da177e4c3f4",
                            "lessThan": "1e68b7ce6bc6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1da177e4c3f4",
                            "lessThan": "5af757124792",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c"
                    ],
                    "versions": [
                        {
                            "version": "6.10.5",
                            "lessThanOrEqual": "6.10.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.11",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/1e68b7ce6bc6073579fe8713ec6b85aa9cd2e351"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5af757124792817f8eb1bd0c80ad60fab519586b"
                }
            ],
            "title": "drm/amd/display: Fix NULL pointer dereference for DTN log in DCN401",
            "x_generator": {
                "engine": "bippy-c9c4e1df01b2"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2024-43901",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2024-09-10T15:28:50.219513Z"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-09-12T17:33:07.936Z"
                }
            }
        ]
    }
}