{"id":"CVE-2024-49920","state":"PUBLISHED","title":"drm/amd/display: Check null pointers before multiple uses","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Check null pointers before multiple uses\n\n[WHAT & HOW]\nPoniters, such as stream_enc and dc->bw_vbios, are null checked previously\nin the same function, so Coverity warns \"implies that stream_enc and\ndc->bw_vbios might be null\". They are used multiple times in the\nsubsequent code and need to be checked.\n\nThis fixes 10 FORWARD_NULL issues reported by Coverity.","publishedAt":"2024-10-21T18:01:46.437Z","updatedAt":"2026-10-30T12:19:38.272Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","status":"affected","lessThan":"7dc67992b35bc11895149b4261c4ad745312a18d","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","status":"affected","lessThan":"4f51f6d23c5856f105110531f81d84e78e462005","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","status":"affected","lessThan":"26787fb6c2b2ee0d1a7e1574b36f4711ae40fe27","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","status":"affected","lessThan":"fdd5ecbbff751c3b9061d8ebb08e5c96119915b4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c","drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c","drivers/gpu/drm/amd/display/dc/link/accessories/link_dp_cts.c","drivers/gpu/drm/amd/display/dc/link/hwss/link_hwss_dio.c","drivers/gpu/drm/amd/display/dc/resource/dce112/dce112_resource.c","drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c","drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource_helpers.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.15","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.11.3","status":"unaffected","lessThanOrEqual":"6.11.*","versionType":"semver"},{"version":"6.12","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c","drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c","drivers/gpu/drm/amd/display/dc/link/accessories/link_dp_cts.c","drivers/gpu/drm/amd/display/dc/link/hwss/link_hwss_dio.c","drivers/gpu/drm/amd/display/dc/resource/dce112/dce112_resource.c","drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c","drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource_helpers.c"]}],"references":["https://git.kernel.org/stable/c/7dc67992b35bc11895149b4261c4ad745312a18d","https://git.kernel.org/stable/c/4f51f6d23c5856f105110531f81d84e78e462005","https://git.kernel.org/stable/c/26787fb6c2b2ee0d1a7e1574b36f4711ae40fe27","https://git.kernel.org/stable/c/fdd5ecbbff751c3b9061d8ebb08e5c96119915b4"],"weaknesses":[],"ingestedAt":"2026-10-30T12:36:04.432Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/49xxx/CVE-2024-49920.json","commit":"db8103c5921aac81d5d90efcf3745980dafabf49","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-49920","state":"PUBLISHED","datePublished":"2024-10-21T18:01:46.437Z","dateUpdated":"2026-10-30T12:19:38.272Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-10-21T12:17:06.034Z"},"containers":{"cna":{"title":"drm/amd/display: Check null pointers before multiple uses","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Check null pointers before multiple uses\n\n[WHAT & HOW]\nPoniters, such as stream_enc and dc->bw_vbios, are null checked previously\nin the same function, so Coverity warns \"implies that stream_enc and\ndc->bw_vbios might be null\". They are used multiple times in the\nsubsequent code and need to be checked.\n\nThis fixes 10 FORWARD_NULL issues reported by Coverity."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","status":"affected","lessThan":"7dc67992b35bc11895149b4261c4ad745312a18d","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","status":"affected","lessThan":"4f51f6d23c5856f105110531f81d84e78e462005","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","status":"affected","lessThan":"26787fb6c2b2ee0d1a7e1574b36f4711ae40fe27","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","status":"affected","lessThan":"fdd5ecbbff751c3b9061d8ebb08e5c96119915b4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c","drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c","drivers/gpu/drm/amd/display/dc/link/accessories/link_dp_cts.c","drivers/gpu/drm/amd/display/dc/link/hwss/link_hwss_dio.c","drivers/gpu/drm/amd/display/dc/resource/dce112/dce112_resource.c","drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c","drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource_helpers.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.15","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.11.3","status":"unaffected","lessThanOrEqual":"6.11.*","versionType":"semver"},{"version":"6.12","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c","drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c","drivers/gpu/drm/amd/display/dc/link/accessories/link_dp_cts.c","drivers/gpu/drm/amd/display/dc/link/hwss/link_hwss_dio.c","drivers/gpu/drm/amd/display/dc/resource/dce112/dce112_resource.c","drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c","drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource_helpers.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/7dc67992b35bc11895149b4261c4ad745312a18d"},{"url":"https://git.kernel.org/stable/c/4f51f6d23c5856f105110531f81d84e78e462005"},{"url":"https://git.kernel.org/stable/c/26787fb6c2b2ee0d1a7e1574b36f4711ae40fe27"},{"url":"https://git.kernel.org/stable/c/fdd5ecbbff751c3b9061d8ebb08e5c96119915b4"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:19:38.272Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.11.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.12"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-49920","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-10-22T13:40:29.310714Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-10-22T13:48:44.735Z"}}]}}}