{"id":"CVE-2024-26662","state":"PUBLISHED","title":"drm/amd/display: Fix 'panel_cntl' could be null in 'dcn21_set_backlight_level()'","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix 'panel_cntl' could be null in 'dcn21_set_backlight_level()'\n\n'panel_cntl' structure used to control the display panel could be null,\ndereferencing it could lead to a null pointer access.\n\nFixes the below:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn21/dcn21_hwseq.c:269 dcn21_set_backlight_level() error: we previously assumed 'panel_cntl' could be null (see line 250)","publishedAt":"2024-04-02T06:22:11.715Z","updatedAt":"2026-10-30T12:17:44.443Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"474ac4a875ca6fea3fc5183d3ad22ef7523dca53","status":"affected","lessThan":"94a506cbfd1bd4817502bed097e24cbab23cfce3","versionType":"git"},{"version":"474ac4a875ca6fea3fc5183d3ad22ef7523dca53","status":"affected","lessThan":"2e150ccea13129eb048679114808eb9770443e4d","versionType":"git"},{"version":"474ac4a875ca6fea3fc5183d3ad22ef7523dca53","status":"affected","lessThan":"0c863cab0e9173f8b6c7bc328bee3b8625f131b5","versionType":"git"},{"version":"474ac4a875ca6fea3fc5183d3ad22ef7523dca53","status":"affected","lessThan":"e96fddb32931d007db12b1fce9b5e8e4c080401b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.9","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.17","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.5","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8","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/hwss/dcn21/dcn21_hwseq.c"]}],"references":["https://git.kernel.org/stable/c/94a506cbfd1bd4817502bed097e24cbab23cfce3","https://git.kernel.org/stable/c/2e150ccea13129eb048679114808eb9770443e4d","https://git.kernel.org/stable/c/0c863cab0e9173f8b6c7bc328bee3b8625f131b5","https://git.kernel.org/stable/c/e96fddb32931d007db12b1fce9b5e8e4c080401b"],"weaknesses":[],"ingestedAt":"2026-10-30T12:34:06.950Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/26xxx/CVE-2024-26662.json","commit":"db8103c5921aac81d5d90efcf3745980dafabf49","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-26662","state":"PUBLISHED","datePublished":"2024-04-02T06:22:11.715Z","dateUpdated":"2026-10-30T12:17:44.443Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-19T14:20:24.148Z"},"containers":{"cna":{"title":"drm/amd/display: Fix 'panel_cntl' could be null in 'dcn21_set_backlight_level()'","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix 'panel_cntl' could be null in 'dcn21_set_backlight_level()'\n\n'panel_cntl' structure used to control the display panel could be null,\ndereferencing it could lead to a null pointer access.\n\nFixes the below:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn21/dcn21_hwseq.c:269 dcn21_set_backlight_level() error: we previously assumed 'panel_cntl' could be null (see line 250)"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"474ac4a875ca6fea3fc5183d3ad22ef7523dca53","status":"affected","lessThan":"94a506cbfd1bd4817502bed097e24cbab23cfce3","versionType":"git"},{"version":"474ac4a875ca6fea3fc5183d3ad22ef7523dca53","status":"affected","lessThan":"2e150ccea13129eb048679114808eb9770443e4d","versionType":"git"},{"version":"474ac4a875ca6fea3fc5183d3ad22ef7523dca53","status":"affected","lessThan":"0c863cab0e9173f8b6c7bc328bee3b8625f131b5","versionType":"git"},{"version":"474ac4a875ca6fea3fc5183d3ad22ef7523dca53","status":"affected","lessThan":"e96fddb32931d007db12b1fce9b5e8e4c080401b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.9","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.17","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.5","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8","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/hwss/dcn21/dcn21_hwseq.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/94a506cbfd1bd4817502bed097e24cbab23cfce3"},{"url":"https://git.kernel.org/stable/c/2e150ccea13129eb048679114808eb9770443e4d"},{"url":"https://git.kernel.org/stable/c/0c863cab0e9173f8b6c7bc328bee3b8625f131b5"},{"url":"https://git.kernel.org/stable/c/e96fddb32931d007db12b1fce9b5e8e4c080401b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:17:44.443Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.6.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.7.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.8"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2024-04-02T15:53:23.636262Z","id":"CVE-2024-26662","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"type":"CWE","lang":"en","description":"CWE-noinfo Not enough information"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-11-01T19:19:16.277Z"}},{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/2e150ccea13129eb048679114808eb9770443e4d","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/0c863cab0e9173f8b6c7bc328bee3b8625f131b5","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/e96fddb32931d007db12b1fce9b5e8e4c080401b","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T00:14:12.577Z"}}]}}}