{"id":"CVE-2024-49921","state":"PUBLISHED","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.","publishedAt":"2024-10-21T18:01:47.112Z","updatedAt":"2026-10-30T12:19:39.338Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","status":"affected","lessThan":"348f8668dfa77294a277946cb0231c29b5474e1d","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","status":"affected","lessThan":"692e9a20018da7aa225d8dced44803f9852aca81","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","status":"affected","lessThan":"5b35bf1a82eb29841b67ff5643ba83762250fc24","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","status":"affected","lessThan":"be1fb44389ca3038ad2430dac4234669bc177ee3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/display/dc/clk_mgr/dce110/dce110_clk_mgr.c","drivers/gpu/drm/amd/display/dc/hubp/dcn10/dcn10_hubp.c","drivers/gpu/drm/amd/display/dc/hubp/dcn20/dcn20_hubp.c","drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c","drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c","drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c","drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c","drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.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/clk_mgr/dce110/dce110_clk_mgr.c","drivers/gpu/drm/amd/display/dc/hubp/dcn10/dcn10_hubp.c","drivers/gpu/drm/amd/display/dc/hubp/dcn20/dcn20_hubp.c","drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c","drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c","drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c","drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c","drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c"]}],"references":["https://git.kernel.org/stable/c/348f8668dfa77294a277946cb0231c29b5474e1d","https://git.kernel.org/stable/c/692e9a20018da7aa225d8dced44803f9852aca81","https://git.kernel.org/stable/c/5b35bf1a82eb29841b67ff5643ba83762250fc24","https://git.kernel.org/stable/c/be1fb44389ca3038ad2430dac4234669bc177ee3"],"weaknesses":[],"ingestedAt":"2026-10-30T12:36:04.432Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/49xxx/CVE-2024-49921.json","commit":"db8103c5921aac81d5d90efcf3745980dafabf49","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-49921","state":"PUBLISHED","datePublished":"2024-10-21T18:01:47.112Z","dateUpdated":"2026-10-30T12:19:39.338Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-10-21T12:17:06.035Z"},"containers":{"cna":{"title":"drm/amd/display: Check null pointers before used","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","status":"affected","lessThan":"348f8668dfa77294a277946cb0231c29b5474e1d","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","status":"affected","lessThan":"692e9a20018da7aa225d8dced44803f9852aca81","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","status":"affected","lessThan":"5b35bf1a82eb29841b67ff5643ba83762250fc24","versionType":"git"},{"version":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c","status":"affected","lessThan":"be1fb44389ca3038ad2430dac4234669bc177ee3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/display/dc/clk_mgr/dce110/dce110_clk_mgr.c","drivers/gpu/drm/amd/display/dc/hubp/dcn10/dcn10_hubp.c","drivers/gpu/drm/amd/display/dc/hubp/dcn20/dcn20_hubp.c","drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c","drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c","drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c","drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c","drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.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/clk_mgr/dce110/dce110_clk_mgr.c","drivers/gpu/drm/amd/display/dc/hubp/dcn10/dcn10_hubp.c","drivers/gpu/drm/amd/display/dc/hubp/dcn20/dcn20_hubp.c","drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c","drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c","drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c","drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c","drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/348f8668dfa77294a277946cb0231c29b5474e1d"},{"url":"https://git.kernel.org/stable/c/692e9a20018da7aa225d8dced44803f9852aca81"},{"url":"https://git.kernel.org/stable/c/5b35bf1a82eb29841b67ff5643ba83762250fc24"},{"url":"https://git.kernel.org/stable/c/be1fb44389ca3038ad2430dac4234669bc177ee3"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:19:39.338Z"},"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-2024-49921","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-10-22T13:40:21.671812Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-10-22T13:48:44.609Z"}}]}}}