cve-2024-47720
Vulnerability from cvelistv5
Published
2024-10-21 11:53
Modified
2024-12-19 09:26
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add null check for set_output_gamma in dcn30_set_output_transfer_func This commit adds a null check for the set_output_gamma function pointer in the dcn30_set_output_transfer_func function. Previously, set_output_gamma was being checked for nullity at line 386, but then it was being dereferenced without any nullity check at line 401. This could potentially lead to a null pointer dereference error if set_output_gamma is indeed null. To fix this, we now ensure that set_output_gamma is not null before dereferencing it. We do this by adding a nullity check for set_output_gamma before the call to set_output_gamma at line 401. If set_output_gamma is null, we log an error message and do not call the function. This fix prevents a potential null pointer dereference error. drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c:401 dcn30_set_output_transfer_func() error: we previously assumed 'mpc->funcs->set_output_gamma' could be null (see line 386) drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c 373 bool dcn30_set_output_transfer_func(struct dc *dc, 374 struct pipe_ctx *pipe_ctx, 375 const struct dc_stream_state *stream) 376 { 377 int mpcc_id = pipe_ctx->plane_res.hubp->inst; 378 struct mpc *mpc = pipe_ctx->stream_res.opp->ctx->dc->res_pool->mpc; 379 const struct pwl_params *params = NULL; 380 bool ret = false; 381 382 /* program OGAM or 3DLUT only for the top pipe*/ 383 if (pipe_ctx->top_pipe == NULL) { 384 /*program rmu shaper and 3dlut in MPC*/ 385 ret = dcn30_set_mpc_shaper_3dlut(pipe_ctx, stream); 386 if (ret == false && mpc->funcs->set_output_gamma) { ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ If this is NULL 387 if (stream->out_transfer_func.type == TF_TYPE_HWPWL) 388 params = &stream->out_transfer_func.pwl; 389 else if (pipe_ctx->stream->out_transfer_func.type == 390 TF_TYPE_DISTRIBUTED_POINTS && 391 cm3_helper_translate_curve_to_hw_format( 392 &stream->out_transfer_func, 393 &mpc->blender_params, false)) 394 params = &mpc->blender_params; 395 /* there are no ROM LUTs in OUTGAM */ 396 if (stream->out_transfer_func.type == TF_TYPE_PREDEFINED) 397 BREAK_TO_DEBUGGER(); 398 } 399 } 400 --> 401 mpc->funcs->set_output_gamma(mpc, mpcc_id, params); ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Then it will crash 402 return ret; 403 }
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/08ae395ea22fb3d9b318c8bde28c0dfd2f5fa4d2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/44948d3cb943602ba4a0b5ed3c91ae0525838fb1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/64886a4e6f1dce843c0889505cf0673b5211e16aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/72ee32d0907364104fbcf4f68dd5ae63cd8eae9ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/84edd5a3f5fa6aafa4afcaf9f101f46426c620c9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ddf9ff244d704e1903533f7be377615ed34b83e7Patch
Impacted products
Vendor Product Version
Linux Linux Version: d99f13878d6f9c286b13860d8bf0b4db9ffb189a
Version: d99f13878d6f9c286b13860d8bf0b4db9ffb189a
Version: d99f13878d6f9c286b13860d8bf0b4db9ffb189a
Version: d99f13878d6f9c286b13860d8bf0b4db9ffb189a
Version: d99f13878d6f9c286b13860d8bf0b4db9ffb189a
Version: d99f13878d6f9c286b13860d8bf0b4db9ffb189a
 Create a notification for this product.
   Linux Linux Version: 5.9
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-47720",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-21T13:02:07.747616Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-21T13:04:17.600Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/hwss/dcn30/dcn30_hwseq.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "44948d3cb943602ba4a0b5ed3c91ae0525838fb1",
              "status": "affected",
              "version": "d99f13878d6f9c286b13860d8bf0b4db9ffb189a",
              "versionType": "git"
            },
            {
              "lessThan": "64886a4e6f1dce843c0889505cf0673b5211e16a",
              "status": "affected",
              "version": "d99f13878d6f9c286b13860d8bf0b4db9ffb189a",
              "versionType": "git"
            },
            {
              "lessThan": "ddf9ff244d704e1903533f7be377615ed34b83e7",
              "status": "affected",
              "version": "d99f13878d6f9c286b13860d8bf0b4db9ffb189a",
              "versionType": "git"
            },
            {
              "lessThan": "84edd5a3f5fa6aafa4afcaf9f101f46426c620c9",
              "status": "affected",
              "version": "d99f13878d6f9c286b13860d8bf0b4db9ffb189a",
              "versionType": "git"
            },
            {
              "lessThan": "72ee32d0907364104fbcf4f68dd5ae63cd8eae9e",
              "status": "affected",
              "version": "d99f13878d6f9c286b13860d8bf0b4db9ffb189a",
              "versionType": "git"
            },
            {
              "lessThan": "08ae395ea22fb3d9b318c8bde28c0dfd2f5fa4d2",
              "status": "affected",
              "version": "d99f13878d6f9c286b13860d8bf0b4db9ffb189a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/hwss/dcn30/dcn30_hwseq.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.9"
            },
            {
              "lessThan": "5.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.168",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Add null check for set_output_gamma in dcn30_set_output_transfer_func\n\nThis commit adds a null check for the set_output_gamma function pointer\nin the  dcn30_set_output_transfer_func function. Previously,\nset_output_gamma was being checked for nullity at line 386, but then it\nwas being dereferenced without any nullity check at line 401. This\ncould potentially lead to a null pointer dereference error if\nset_output_gamma is indeed null.\n\nTo fix this, we now ensure that set_output_gamma is not null before\ndereferencing it. We do this by adding a nullity check for\nset_output_gamma before the call to set_output_gamma at line 401. If\nset_output_gamma is null, we log an error message and do not call the\nfunction.\n\nThis fix prevents a potential null pointer dereference error.\n\ndrivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c:401 dcn30_set_output_transfer_func()\nerror: we previously assumed \u0027mpc-\u003efuncs-\u003eset_output_gamma\u0027 could be null (see line 386)\n\ndrivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c\n    373 bool dcn30_set_output_transfer_func(struct dc *dc,\n    374                                 struct pipe_ctx *pipe_ctx,\n    375                                 const struct dc_stream_state *stream)\n    376 {\n    377         int mpcc_id = pipe_ctx-\u003eplane_res.hubp-\u003einst;\n    378         struct mpc *mpc = pipe_ctx-\u003estream_res.opp-\u003ectx-\u003edc-\u003eres_pool-\u003empc;\n    379         const struct pwl_params *params = NULL;\n    380         bool ret = false;\n    381\n    382         /* program OGAM or 3DLUT only for the top pipe*/\n    383         if (pipe_ctx-\u003etop_pipe == NULL) {\n    384                 /*program rmu shaper and 3dlut in MPC*/\n    385                 ret = dcn30_set_mpc_shaper_3dlut(pipe_ctx, stream);\n    386                 if (ret == false \u0026\u0026 mpc-\u003efuncs-\u003eset_output_gamma) {\n                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ If this is NULL\n\n    387                         if (stream-\u003eout_transfer_func.type == TF_TYPE_HWPWL)\n    388                                 params = \u0026stream-\u003eout_transfer_func.pwl;\n    389                         else if (pipe_ctx-\u003estream-\u003eout_transfer_func.type ==\n    390                                         TF_TYPE_DISTRIBUTED_POINTS \u0026\u0026\n    391                                         cm3_helper_translate_curve_to_hw_format(\n    392                                         \u0026stream-\u003eout_transfer_func,\n    393                                         \u0026mpc-\u003eblender_params, false))\n    394                                 params = \u0026mpc-\u003eblender_params;\n    395                          /* there are no ROM LUTs in OUTGAM */\n    396                         if (stream-\u003eout_transfer_func.type == TF_TYPE_PREDEFINED)\n    397                                 BREAK_TO_DEBUGGER();\n    398                 }\n    399         }\n    400\n--\u003e 401         mpc-\u003efuncs-\u003eset_output_gamma(mpc, mpcc_id, params);\n                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Then it will crash\n\n    402         return ret;\n    403 }"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:26:46.836Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/44948d3cb943602ba4a0b5ed3c91ae0525838fb1"
        },
        {
          "url": "https://git.kernel.org/stable/c/64886a4e6f1dce843c0889505cf0673b5211e16a"
        },
        {
          "url": "https://git.kernel.org/stable/c/ddf9ff244d704e1903533f7be377615ed34b83e7"
        },
        {
          "url": "https://git.kernel.org/stable/c/84edd5a3f5fa6aafa4afcaf9f101f46426c620c9"
        },
        {
          "url": "https://git.kernel.org/stable/c/72ee32d0907364104fbcf4f68dd5ae63cd8eae9e"
        },
        {
          "url": "https://git.kernel.org/stable/c/08ae395ea22fb3d9b318c8bde28c0dfd2f5fa4d2"
        }
      ],
      "title": "drm/amd/display: Add null check for set_output_gamma in dcn30_set_output_transfer_func",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-47720",
    "datePublished": "2024-10-21T11:53:50.178Z",
    "dateReserved": "2024-09-30T16:00:12.950Z",
    "dateUpdated": "2024-12-19T09:26:46.836Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-47720\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-10-21T12:15:08.240\",\"lastModified\":\"2024-10-23T20:53:54.150\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/amd/display: Add null check for set_output_gamma in dcn30_set_output_transfer_func\\n\\nThis commit adds a null check for the set_output_gamma function pointer\\nin the  dcn30_set_output_transfer_func function. Previously,\\nset_output_gamma was being checked for nullity at line 386, but then it\\nwas being dereferenced without any nullity check at line 401. This\\ncould potentially lead to a null pointer dereference error if\\nset_output_gamma is indeed null.\\n\\nTo fix this, we now ensure that set_output_gamma is not null before\\ndereferencing it. We do this by adding a nullity check for\\nset_output_gamma before the call to set_output_gamma at line 401. If\\nset_output_gamma is null, we log an error message and do not call the\\nfunction.\\n\\nThis fix prevents a potential null pointer dereference error.\\n\\ndrivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c:401 dcn30_set_output_transfer_func()\\nerror: we previously assumed \u0027mpc-\u003efuncs-\u003eset_output_gamma\u0027 could be null (see line 386)\\n\\ndrivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c\\n    373 bool dcn30_set_output_transfer_func(struct dc *dc,\\n    374                                 struct pipe_ctx *pipe_ctx,\\n    375                                 const struct dc_stream_state *stream)\\n    376 {\\n    377         int mpcc_id = pipe_ctx-\u003eplane_res.hubp-\u003einst;\\n    378         struct mpc *mpc = pipe_ctx-\u003estream_res.opp-\u003ectx-\u003edc-\u003eres_pool-\u003empc;\\n    379         const struct pwl_params *params = NULL;\\n    380         bool ret = false;\\n    381\\n    382         /* program OGAM or 3DLUT only for the top pipe*/\\n    383         if (pipe_ctx-\u003etop_pipe == NULL) {\\n    384                 /*program rmu shaper and 3dlut in MPC*/\\n    385                 ret = dcn30_set_mpc_shaper_3dlut(pipe_ctx, stream);\\n    386                 if (ret == false \u0026\u0026 mpc-\u003efuncs-\u003eset_output_gamma) {\\n                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ If this is NULL\\n\\n    387                         if (stream-\u003eout_transfer_func.type == TF_TYPE_HWPWL)\\n    388                                 params = \u0026stream-\u003eout_transfer_func.pwl;\\n    389                         else if (pipe_ctx-\u003estream-\u003eout_transfer_func.type ==\\n    390                                         TF_TYPE_DISTRIBUTED_POINTS \u0026\u0026\\n    391                                         cm3_helper_translate_curve_to_hw_format(\\n    392                                         \u0026stream-\u003eout_transfer_func,\\n    393                                         \u0026mpc-\u003eblender_params, false))\\n    394                                 params = \u0026mpc-\u003eblender_params;\\n    395                          /* there are no ROM LUTs in OUTGAM */\\n    396                         if (stream-\u003eout_transfer_func.type == TF_TYPE_PREDEFINED)\\n    397                                 BREAK_TO_DEBUGGER();\\n    398                 }\\n    399         }\\n    400\\n--\u003e 401         mpc-\u003efuncs-\u003eset_output_gamma(mpc, mpcc_id, params);\\n                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Then it will crash\\n\\n    402         return ret;\\n    403 }\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: Agregar comprobaci\u00f3n nula para set_output_gamma en dcn30_set_output_transfer_func Esta confirmaci\u00f3n agrega una comprobaci\u00f3n nula para el puntero de funci\u00f3n set_output_gamma en la funci\u00f3n dcn30_set_output_transfer_func. Anteriormente, se estaba comprobando la nulidad de set_output_gamma en la l\u00ednea 386, pero luego se estaba desreferenciando sin ninguna comprobaci\u00f3n de nulidad en la l\u00ednea 401. Esto podr\u00eda conducir potencialmente a un error de desreferencia de puntero nulo si set_output_gamma es de hecho nulo. Para solucionar esto, ahora nos aseguramos de que set_output_gamma no sea nulo antes de desreferenciarlo. Hacemos esto agregando una comprobaci\u00f3n de nulidad para set_output_gamma antes de la llamada a set_output_gamma en la l\u00ednea 401. Si set_output_gamma es nulo, registramos un mensaje de error y no llamamos a la funci\u00f3n. Esta correcci\u00f3n evita un posible error de desreferencia de puntero nulo. drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c:401 error de dcn30_set_output_transfer_func(): anteriormente asumimos que \u0027mpc-\u0026gt;funcs-\u0026gt;set_output_gamma\u0027 podr\u00eda ser nulo (ver l\u00ednea 386) drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c 373 bool dcn30_set_output_transfer_func(struct dc *dc, 374 struct pipe_ctx *pipe_ctx, 375 const struct dc_stream_state *stream) 376 { 377 int mpcc_id = pipe_ctx-\u0026gt;plane_res.hubp-\u0026gt;inst; 378 struct mpc *mpc = pipe_ctx-\u0026gt;stream_res.opp-\u0026gt;ctx-\u0026gt;dc-\u0026gt;res_pool-\u0026gt;mpc; 379 const struct pwl_params *params = NULL; 380 bool ret = false; 381 382 /* programa OGAM o 3DLUT solo para la tuber\u00eda superior*/ 383 if (pipe_ctx-\u0026gt;top_pipe == NULL) { 384 /*programa rmu shaper y 3dlut en MPC*/ 385 ret = dcn30_set_mpc_shaper_3dlut(pipe_ctx, stream); 386 si (ret == falso \u0026amp;\u0026amp; mpc-\u0026gt;funcs-\u0026gt;set_output_gamma) { ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Si esto es NULL 387 si (flujo-\u0026gt;out_transfer_func.type == TF_TYPE_HWPWL) 388 par\u00e1metros = \u0026amp;flujo-\u0026gt;out_transfer_func.pwl; 389 de lo contrario si (pipe_ctx-\u0026gt;flujo-\u0026gt;out_transfer_func.type == 390 TF_TYPE_DISTRIBUTED_POINTS \u0026amp;\u0026amp; 391 cm3_helper_translate_curve_to_hw_format( 392 \u0026amp;flujo-\u0026gt;out_transfer_func, 393 \u0026amp;mpc-\u0026gt;blender_params, falso)) 394 par\u00e1metros = \u0026amp;mpc-\u0026gt;blender_params; 395 /* no hay LUT de ROM en OUTGAM */ 396 if (stream-\u0026gt;out_transfer_func.type == TF_TYPE_PREDEFINED) 397 BREAK_TO_DEBUGGER(); 398 } 399 } 400 --\u0026gt; 401 mpc-\u0026gt;funcs-\u0026gt;set_output_gamma(mpc, mpcc_id, params); ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Entonces se bloquear\u00e1 402 return ret; 403 }\"}],\"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:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.9\",\"versionEndExcluding\":\"5.15.168\",\"matchCriteriaId\":\"643E292D-C242-4FEC-8A11-034AB46708C1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.113\",\"matchCriteriaId\":\"D01BD22E-ACD1-4618-9D01-6116570BE1EE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.54\",\"matchCriteriaId\":\"D448821D-C085-4CAF-88FA-2DDE7BE21976\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.10.13\",\"matchCriteriaId\":\"CE94BB8D-B0AB-4563-9ED7-A12122B56EBE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.11\",\"versionEndExcluding\":\"6.11.2\",\"matchCriteriaId\":\"AB755D26-97F4-43B6-8604-CD076811E181\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/08ae395ea22fb3d9b318c8bde28c0dfd2f5fa4d2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/44948d3cb943602ba4a0b5ed3c91ae0525838fb1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/64886a4e6f1dce843c0889505cf0673b5211e16a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/72ee32d0907364104fbcf4f68dd5ae63cd8eae9e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/84edd5a3f5fa6aafa4afcaf9f101f46426c620c9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ddf9ff244d704e1903533f7be377615ed34b83e7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-47720\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-21T13:02:07.747616Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-21T13:02:10.851Z\"}}], \"cna\": {\"title\": \"drm/amd/display: Add null check for set_output_gamma in dcn30_set_output_transfer_func\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"d99f13878d6f9c286b13860d8bf0b4db9ffb189a\", \"lessThan\": \"44948d3cb943602ba4a0b5ed3c91ae0525838fb1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d99f13878d6f9c286b13860d8bf0b4db9ffb189a\", \"lessThan\": \"64886a4e6f1dce843c0889505cf0673b5211e16a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d99f13878d6f9c286b13860d8bf0b4db9ffb189a\", \"lessThan\": \"ddf9ff244d704e1903533f7be377615ed34b83e7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d99f13878d6f9c286b13860d8bf0b4db9ffb189a\", \"lessThan\": \"84edd5a3f5fa6aafa4afcaf9f101f46426c620c9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d99f13878d6f9c286b13860d8bf0b4db9ffb189a\", \"lessThan\": \"72ee32d0907364104fbcf4f68dd5ae63cd8eae9e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d99f13878d6f9c286b13860d8bf0b4db9ffb189a\", \"lessThan\": \"08ae395ea22fb3d9b318c8bde28c0dfd2f5fa4d2\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/gpu/drm/amd/display/dc/hwss/dcn30/dcn30_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\": \"5.9\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.9\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.168\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.113\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.54\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.13\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/gpu/drm/amd/display/dc/hwss/dcn30/dcn30_hwseq.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/44948d3cb943602ba4a0b5ed3c91ae0525838fb1\"}, {\"url\": \"https://git.kernel.org/stable/c/64886a4e6f1dce843c0889505cf0673b5211e16a\"}, {\"url\": \"https://git.kernel.org/stable/c/ddf9ff244d704e1903533f7be377615ed34b83e7\"}, {\"url\": \"https://git.kernel.org/stable/c/84edd5a3f5fa6aafa4afcaf9f101f46426c620c9\"}, {\"url\": \"https://git.kernel.org/stable/c/72ee32d0907364104fbcf4f68dd5ae63cd8eae9e\"}, {\"url\": \"https://git.kernel.org/stable/c/08ae395ea22fb3d9b318c8bde28c0dfd2f5fa4d2\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/amd/display: Add null check for set_output_gamma in dcn30_set_output_transfer_func\\n\\nThis commit adds a null check for the set_output_gamma function pointer\\nin the  dcn30_set_output_transfer_func function. Previously,\\nset_output_gamma was being checked for nullity at line 386, but then it\\nwas being dereferenced without any nullity check at line 401. This\\ncould potentially lead to a null pointer dereference error if\\nset_output_gamma is indeed null.\\n\\nTo fix this, we now ensure that set_output_gamma is not null before\\ndereferencing it. We do this by adding a nullity check for\\nset_output_gamma before the call to set_output_gamma at line 401. If\\nset_output_gamma is null, we log an error message and do not call the\\nfunction.\\n\\nThis fix prevents a potential null pointer dereference error.\\n\\ndrivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c:401 dcn30_set_output_transfer_func()\\nerror: we previously assumed \u0027mpc-\u003efuncs-\u003eset_output_gamma\u0027 could be null (see line 386)\\n\\ndrivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c\\n    373 bool dcn30_set_output_transfer_func(struct dc *dc,\\n    374                                 struct pipe_ctx *pipe_ctx,\\n    375                                 const struct dc_stream_state *stream)\\n    376 {\\n    377         int mpcc_id = pipe_ctx-\u003eplane_res.hubp-\u003einst;\\n    378         struct mpc *mpc = pipe_ctx-\u003estream_res.opp-\u003ectx-\u003edc-\u003eres_pool-\u003empc;\\n    379         const struct pwl_params *params = NULL;\\n    380         bool ret = false;\\n    381\\n    382         /* program OGAM or 3DLUT only for the top pipe*/\\n    383         if (pipe_ctx-\u003etop_pipe == NULL) {\\n    384                 /*program rmu shaper and 3dlut in MPC*/\\n    385                 ret = dcn30_set_mpc_shaper_3dlut(pipe_ctx, stream);\\n    386                 if (ret == false \u0026\u0026 mpc-\u003efuncs-\u003eset_output_gamma) {\\n                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ If this is NULL\\n\\n    387                         if (stream-\u003eout_transfer_func.type == TF_TYPE_HWPWL)\\n    388                                 params = \u0026stream-\u003eout_transfer_func.pwl;\\n    389                         else if (pipe_ctx-\u003estream-\u003eout_transfer_func.type ==\\n    390                                         TF_TYPE_DISTRIBUTED_POINTS \u0026\u0026\\n    391                                         cm3_helper_translate_curve_to_hw_format(\\n    392                                         \u0026stream-\u003eout_transfer_func,\\n    393                                         \u0026mpc-\u003eblender_params, false))\\n    394                                 params = \u0026mpc-\u003eblender_params;\\n    395                          /* there are no ROM LUTs in OUTGAM */\\n    396                         if (stream-\u003eout_transfer_func.type == TF_TYPE_PREDEFINED)\\n    397                                 BREAK_TO_DEBUGGER();\\n    398                 }\\n    399         }\\n    400\\n--\u003e 401         mpc-\u003efuncs-\u003eset_output_gamma(mpc, mpcc_id, params);\\n                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Then it will crash\\n\\n    402         return ret;\\n    403 }\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T09:26:46.836Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-47720\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T09:26:46.836Z\", \"dateReserved\": \"2024-09-30T16:00:12.950Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T11:53:50.178Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.