CVE-2024-43901 (GCVE-0-2024-43901)
Vulnerability from cvelistv5
Published
2024-08-26 10:11
Modified
2025-07-11 17:20
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix NULL pointer dereference for DTN log in DCN401 When users run the command: cat /sys/kernel/debug/dri/0/amdgpu_dm_dtn_log The following NULL pointer dereference happens: [ +0.000003] BUG: kernel NULL pointer dereference, address: NULL [ +0.000005] #PF: supervisor instruction fetch in kernel mode [ +0.000002] #PF: error_code(0x0010) - not-present page [ +0.000002] PGD 0 P4D 0 [ +0.000004] Oops: 0010 [#1] PREEMPT SMP NOPTI [ +0.000003] RIP: 0010:0x0 [ +0.000008] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [...] [ +0.000002] PKRU: 55555554 [ +0.000002] Call Trace: [ +0.000002] <TASK> [ +0.000003] ? show_regs+0x65/0x70 [ +0.000006] ? __die+0x24/0x70 [ +0.000004] ? page_fault_oops+0x160/0x470 [ +0.000006] ? do_user_addr_fault+0x2b5/0x690 [ +0.000003] ? prb_read_valid+0x1c/0x30 [ +0.000005] ? exc_page_fault+0x8c/0x1a0 [ +0.000005] ? asm_exc_page_fault+0x27/0x30 [ +0.000012] dcn10_log_color_state+0xf9/0x510 [amdgpu] [ +0.000306] ? srso_alias_return_thunk+0x5/0xfbef5 [ +0.000003] ? vsnprintf+0x2fb/0x600 [ +0.000009] dcn10_log_hw_state+0xfd0/0xfe0 [amdgpu] [ +0.000218] ? __mod_memcg_lruvec_state+0xe8/0x170 [ +0.000008] ? srso_alias_return_thunk+0x5/0xfbef5 [ +0.000002] ? debug_smp_processor_id+0x17/0x20 [ +0.000003] ? srso_alias_return_thunk+0x5/0xfbef5 [ +0.000002] ? srso_alias_return_thunk+0x5/0xfbef5 [ +0.000002] ? set_ptes.isra.0+0x2b/0x90 [ +0.000004] ? srso_alias_return_thunk+0x5/0xfbef5 [ +0.000002] ? _raw_spin_unlock+0x19/0x40 [ +0.000004] ? srso_alias_return_thunk+0x5/0xfbef5 [ +0.000002] ? do_anonymous_page+0x337/0x700 [ +0.000004] dtn_log_read+0x82/0x120 [amdgpu] [ +0.000207] full_proxy_read+0x66/0x90 [ +0.000007] vfs_read+0xb0/0x340 [ +0.000005] ? __count_memcg_events+0x79/0xe0 [ +0.000002] ? srso_alias_return_thunk+0x5/0xfbef5 [ +0.000003] ? count_memcg_events.constprop.0+0x1e/0x40 [ +0.000003] ? handle_mm_fault+0xb2/0x370 [ +0.000003] ksys_read+0x6b/0xf0 [ +0.000004] __x64_sys_read+0x19/0x20 [ +0.000003] do_syscall_64+0x60/0x130 [ +0.000004] entry_SYSCALL_64_after_hwframe+0x6e/0x76 [ +0.000003] RIP: 0033:0x7fdf32f147e2 [...] This error happens when the color log tries to read the gamut remap information from DCN401 which is not initialized in the dcn401_dpp_funcs which leads to a null pointer dereference. This commit addresses this issue by adding a proper guard to access the gamut_remap callback in case the specific ASIC did not implement this function.
References
Impacted products
Vendor Product Version
Linux Linux Version: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c
Version: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c
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{
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              "content": {
                "id": "CVE-2024-43901",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:28:50.219513Z",
                "version": "2.0.3"
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          "dateUpdated": "2024-09-12T17:33:07.936Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
      }
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    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
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              "lessThan": "5af757124792817f8eb1bd0c80ad60fab519586b",
              "status": "affected",
              "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.15"
            },
            {
              "lessThan": "4.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.11",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10.5",
                  "versionStartIncluding": "4.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11",
                  "versionStartIncluding": "4.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "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]  \u003cTASK\u003e\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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-11T17:20:07.269Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "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": {
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-43901",
    "datePublished": "2024-08-26T10:11:00.255Z",
    "dateReserved": "2024-08-17T09:11:59.292Z",
    "dateUpdated": "2025-07-11T17:20:07.269Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-43901\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-08-26T11:15:04.673\",\"lastModified\":\"2024-08-27T14:38:44.187\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"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]  \u003cTASK\u003e\\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.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: corrige la desreferencia del puntero NULL para el registro DTN en DCN401 Cuando los usuarios ejecutan el comando: cat /sys/kernel/debug/dri/0/amdgpu_dm_dtn_log El siguiente puntero NULL ocurre la desreferencia: [+0.000003] ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: NULL [+0.000005] #PF: b\u00fasqueda de instrucciones del supervisor en modo kernel [+0.000002] #PF: c\u00f3digo_error(0x0010) - p\u00e1gina no presente [+0.000002] PGD 0 P4D 0 [ +0.000004] Ups: 0010 [#1] PREEMPT SMP NOPTI [ +0.000003] RIP: 0010:0x0 [ +0.000008] C\u00f3digo: No se puede acceder a los bytes del c\u00f3digo de operaci\u00f3n en 0xffffffffffffffd6. [...] [ +0.000002] PKRU: 55555554 [ +0.000002] Seguimiento de llamadas: [ +0.000002]  [ +0.000003] ? show_regs+0x65/0x70 [+0.000006]? __die+0x24/0x70 [ +0.000004] ? page_fault_oops+0x160/0x470 [+0.000006]? do_user_addr_fault+0x2b5/0x690 [+0.000003]? prb_read_valid+0x1c/0x30 [+0.000005]? exc_page_fault+0x8c/0x1a0 [+0.000005]? asm_exc_page_fault+0x27/0x30 [ +0.000012] dcn10_log_color_state+0xf9/0x510 [amdgpu] [ +0.000306] ? srso_alias_return_thunk+0x5/0xfbef5 [+0.000003]? vsnprintf+0x2fb/0x600 [ +0.000009] dcn10_log_hw_state+0xfd0/0xfe0 [amdgpu] [ +0.000218] ? __mod_memcg_lruvec_state+0xe8/0x170 [ +0.000008] ? srso_alias_return_thunk+0x5/0xfbef5 [+0.000002]? debug_smp_processor_id+0x17/0x20 [+0.000003]? srso_alias_return_thunk+0x5/0xfbef5 [+0.000002]? srso_alias_return_thunk+0x5/0xfbef5 [+0.000002]? set_ptes.isra.0+0x2b/0x90 [ +0.000004] ? srso_alias_return_thunk+0x5/0xfbef5 [+0.000002]? _raw_spin_unlock+0x19/0x40 [+0.000004]? srso_alias_return_thunk+0x5/0xfbef5 [+0.000002]? do_anonymous_page+0x337/0x700 [ +0.000004] dtn_log_read+0x82/0x120 [amdgpu] [ +0.000207] full_proxy_read+0x66/0x90 [ +0.000007] vfs_read+0xb0/0x340 [ +0.000005] ? __count_memcg_events+0x79/0xe0 [+0.000002]? srso_alias_return_thunk+0x5/0xfbef5 [+0.000003]? count_memcg_events.constprop.0+0x1e/0x40 [+0.000003]? handle_mm_fault+0xb2/0x370 [ +0.000003] ksys_read+0x6b/0xf0 [ +0.000004] __x64_sys_read+0x19/0x20 [ +0.000003] do_syscall_64+0x60/0x130 [ +0.000004] _64_after_hwframe+0x6e/0x76 [+0.000003] RIP: 0033:0x7fdf32f147e2 [...] Este error ocurre cuando el registro de color intenta leer la informaci\u00f3n de reasignaci\u00f3n de gama de DCN401 que no est\u00e1 inicializada en dcn401_dpp_funcs, lo que conduce a una desreferencia del puntero nulo. Esta confirmaci\u00f3n soluciona este problema agregando una protecci\u00f3n adecuada para acceder a la devoluci\u00f3n de llamada gamut_remap en caso de que el ASIC espec\u00edfico no haya implementado esta funci\u00f3n.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"6.10.5\",\"matchCriteriaId\":\"E4CB0927-C720-465B-99F2-3E47215515F2\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1e68b7ce6bc6073579fe8713ec6b85aa9cd2e351\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5af757124792817f8eb1bd0c80ad60fab519586b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"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\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:15.178Z\"}}], \"cna\": {\"title\": \"drm/amd/display: Fix NULL pointer dereference for DTN log in DCN401\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c\", \"lessThan\": \"1e68b7ce6bc6073579fe8713ec6b85aa9cd2e351\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c\", \"lessThan\": \"5af757124792817f8eb1bd0c80ad60fab519586b\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.15\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.15\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.10.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/1e68b7ce6bc6073579fe8713ec6b85aa9cd2e351\"}, {\"url\": \"https://git.kernel.org/stable/c/5af757124792817f8eb1bd0c80ad60fab519586b\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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]  \u003cTASK\u003e\\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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.5\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11\", \"versionStartIncluding\": \"4.15\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-07-11T17:20:07.269Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-43901\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-07-11T17:20:07.269Z\", \"dateReserved\": \"2024-08-17T09:11:59.292Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-08-26T10:11:00.255Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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