| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "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 'mpc->funcs->set_output_gamma' 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->plane_res.hubp->inst;\n 378 struct mpc *mpc = pipe_ctx->stream_res.opp->ctx->dc->res_pool->mpc;\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->top_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 && mpc->funcs->set_output_gamma) {\n ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ If this is NULL\n\n 387 if (stream->out_transfer_func.type == TF_TYPE_HWPWL)\n 388 params = &stream->out_transfer_func.pwl;\n 389 else if (pipe_ctx->stream->out_transfer_func.type ==\n 390 TF_TYPE_DISTRIBUTED_POINTS &&\n 391 cm3_helper_translate_curve_to_hw_format(\n 392 &stream->out_transfer_func,\n 393 &mpc->blender_params, false))\n 394 params = &mpc->blender_params;\n 395 /* there are no ROM LUTs in OUTGAM */\n 396 if (stream->out_transfer_func.type == TF_TYPE_PREDEFINED)\n 397 BREAK_TO_DEBUGGER();\n 398 }\n 399 }\n 400\n--> 401 mpc->funcs->set_output_gamma(mpc, mpcc_id, params);\n ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Then it will crash\n\n 402 return ret;\n 403 }" |
| } |
| ], |
| "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/dcn30/dcn30_hwseq.c" |
| ], |
| "versions": [ |
| { |
| "version": "d99f13878d6f9c286b13860d8bf0b4db9ffb189a", |
| "lessThan": "44948d3cb943602ba4a0b5ed3c91ae0525838fb1", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "d99f13878d6f9c286b13860d8bf0b4db9ffb189a", |
| "lessThan": "64886a4e6f1dce843c0889505cf0673b5211e16a", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "d99f13878d6f9c286b13860d8bf0b4db9ffb189a", |
| "lessThan": "ddf9ff244d704e1903533f7be377615ed34b83e7", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "d99f13878d6f9c286b13860d8bf0b4db9ffb189a", |
| "lessThan": "84edd5a3f5fa6aafa4afcaf9f101f46426c620c9", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "d99f13878d6f9c286b13860d8bf0b4db9ffb189a", |
| "lessThan": "72ee32d0907364104fbcf4f68dd5ae63cd8eae9e", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "d99f13878d6f9c286b13860d8bf0b4db9ffb189a", |
| "lessThan": "08ae395ea22fb3d9b318c8bde28c0dfd2f5fa4d2", |
| "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/dcn30/dcn30_hwseq.c" |
| ], |
| "versions": [ |
| { |
| "version": "5.9", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "5.9", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.168", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.113", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.54", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.10.13", |
| "lessThanOrEqual": "6.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.11.2", |
| "lessThanOrEqual": "6.11.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12", |
| "lessThanOrEqual": "*", |
| "status": "unaffected", |
| "versionType": "original_commit_for_fix" |
| } |
| ] |
| } |
| ], |
| "cpeApplicability": [ |
| { |
| "nodes": [ |
| { |
| "operator": "OR", |
| "negate": false, |
| "cpeMatch": [ |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.9", |
| "versionEndExcluding": "5.15.168" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.9", |
| "versionEndExcluding": "6.1.113" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.9", |
| "versionEndExcluding": "6.6.54" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.9", |
| "versionEndExcluding": "6.10.13" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.9", |
| "versionEndExcluding": "6.11.2" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.9", |
| "versionEndExcluding": "6.12" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "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-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-47720", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
