{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-47444","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-05-21T14:58:30.832Z","datePublished":"2024-05-22T06:19:37.533Z","dateUpdated":"2025-05-04T07:11:05.136Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:11:05.136Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/edid: In connector_bad_edid() cap num_of_ext by num_blocks read\n\nIn commit e11f5bd8228f (\"drm: Add support for DP 1.4 Compliance edid\ncorruption test\") the function connector_bad_edid() started assuming\nthat the memory for the EDID passed to it was big enough to hold\n`edid[0x7e] + 1` blocks of data (1 extra for the base block). It\ncompletely ignored the fact that the function was passed `num_blocks`\nwhich indicated how much memory had been allocated for the EDID.\n\nLet's fix this by adding a bounds check.\n\nThis is important for handling the case where there's an error in the\nfirst block of the EDID. In that case we will call\nconnector_bad_edid() without having re-allocated memory based on\n`edid[0x7e]`."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/drm_edid.c"],"versions":[{"version":"e11f5bd8228fc3760c221f940b9f6365dbf3e7ed","lessThan":"a7b45024f66f9ec769e8dbb1a51ae83cd05929c7","status":"affected","versionType":"git"},{"version":"e11f5bd8228fc3760c221f940b9f6365dbf3e7ed","lessThan":"09f3946bb452918dbfb1982add56f9ffaae393dc","status":"affected","versionType":"git"},{"version":"e11f5bd8228fc3760c221f940b9f6365dbf3e7ed","lessThan":"97794170b696856483f74b47bfb6049780d2d3a0","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/drm_edid.c"],"versions":[{"version":"5.7","status":"affected"},{"version":"0","lessThan":"5.7","status":"unaffected","versionType":"semver"},{"version":"5.10.75","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.14.14","lessThanOrEqual":"5.14.*","status":"unaffected","versionType":"semver"},{"version":"5.15","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":"5.7","versionEndExcluding":"5.10.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.14.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.15"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/a7b45024f66f9ec769e8dbb1a51ae83cd05929c7"},{"url":"https://git.kernel.org/stable/c/09f3946bb452918dbfb1982add56f9ffaae393dc"},{"url":"https://git.kernel.org/stable/c/97794170b696856483f74b47bfb6049780d2d3a0"}],"title":"drm/edid: In connector_bad_edid() cap num_of_ext by num_blocks read","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2021-47444","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-05-24T19:29:09.418657Z"}}}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-06-04T17:13:53.878Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T05:39:59.303Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/a7b45024f66f9ec769e8dbb1a51ae83cd05929c7","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/09f3946bb452918dbfb1982add56f9ffaae393dc","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/97794170b696856483f74b47bfb6049780d2d3a0","tags":["x_transferred"]}]}]}}