{"id":"CVE-2024-49921","revision":"a604cba8f9934876b3b15ec4a7594062","records":[{"revision":"a604cba8f9934876b3b15ec4a7594062","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-49921","aliases":[],"title":"drm/amd/display: Check null pointers before used","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Check null pointers before used\n\n[WHAT & HOW]\nPoniters, such as dc->clk_mgr, are null checked previously in the same\nfunction, so Coverity warns \"implies that \"dc->clk_mgr\" might be null\".\nAs a result, these pointers need to be checked when used again.\n\nThis fixes 10 FORWARD_NULL issues reported by Coverity.","state":0,"publishedAt":"2024-10-21T18:01:47.112+00:00","modifiedAt":"2026-10-21T12:35:23.236+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/amd/display/dc/clk_mgr/dce110/dce110_clk_mgr.c\",\n                        \"drivers/gpu/drm/amd/display/dc/hubp/dcn10/dcn10_hubp.c\",\n                        \"drivers/gpu/drm/amd/display/dc/hubp/dcn20/dcn20_hubp.c\",\n                        \"drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c\",\n                        \"drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c\",\n                        \"drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c\",\n                        \"drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c\",\n                        \"drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c\",\n                            \"lessThan\": \"692e9a20018da7aa225d8dced44803f9852aca81\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c\",\n                            \"lessThan\": \"5b35bf1a82eb29841b67ff5643ba83762250fc24\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c\",\n                            \"lessThan\": \"be1fb44389ca3038ad2430dac4234669bc177ee3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/amd/display/dc/clk_mgr/dce110/dce110_clk_mgr.c\",\n                        \"drivers/gpu/drm/amd/display/dc/hubp/dcn10/dcn10_hubp.c\",\n                        \"drivers/gpu/drm/amd/display/dc/hubp/dcn20/dcn20_hubp.c\",\n                        \"drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c\",\n                        \"drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c\",\n                        \"drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c\",\n                        \"drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c\",\n                        \"drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.15\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.15\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.11.3\",\n                            \"lessThanOrEqual\": \"6.11.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/692e9a20018da7aa225d8dced44803f9852aca81","https://git.kernel.org/stable/c/5b35bf1a82eb29841b67ff5643ba83762250fc24","https://git.kernel.org/stable/c/be1fb44389ca3038ad2430dac4234669bc177ee3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-49921","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-49921","identifiers":["CVE-2024-49921"]},"retained":false,"historicalAffected":[]}],"coverage":[]}