CVE-2021-47207

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2021-47207", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-03-25T09:12:14.118Z", "datePublished": "2024-04-10T18:56:39.655Z", "dateUpdated": "2026-05-11T13:50:05.424Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:50:05.424Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: gus: fix null pointer dereference on pointer block\n\nThe pointer block return from snd_gf1_dma_next_block could be\nnull, so there is a potential null pointer dereference issue.\nFix this by adding a null check before dereference."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["sound/isa/gus/gus_dma.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "3e28e083dcdf03a18a083f8a47b6bb6b1604b5be", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "cb09c760c201f82df83babc92a5ffea0a01807fc", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "542fa721594a02d2aee0370a764d306ef48d030c", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "ab4c1ebc40f699f48346f634d7b72b9c5193f315", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "c6d2cefdd05c4810c416fb8d384b5c377bd977bc", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "1ac6cd87d8ddd36c43620f82c4d65b058f725f0f", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "16721797dcef2c7c030ffe73a07f39a65f9323c3", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a0d21bb3279476c777434c40d969ea88ca64f9aa", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["sound/isa/gus/gus_dma.c"], "versions": [{"version": "2.6.12", "status": "affected"}, {"version": "0", "lessThan": "2.6.12", "status": "unaffected", "versionType": "semver"}, {"version": "4.4.293", "lessThanOrEqual": "4.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.9.291", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.256", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.218", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.162", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.82", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.5", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.16", "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": "2.6.12", "versionEndExcluding": "4.4.293"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "4.9.291"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "4.14.256"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "4.19.218"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.4.162"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.10.82"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.15.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.16"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be"}, {"url": "https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc"}, {"url": "https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c"}, {"url": "https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315"}, {"url": "https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc"}, {"url": "https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f"}, {"url": "https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3"}, {"url": "https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa"}], "title": "ALSA: gus: fix null pointer dereference on pointer block", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-06-17T18:03:51.697806Z", "id": "CVE-2021-47207", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-17T18:04:50.591Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:07.300Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:07.300Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47207", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-06-17T18:03:51.697806Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-17T18:03:52.750Z"}}], "cna": {"title": "ALSA: gus: fix null pointer dereference on pointer block", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "3e28e083dcdf03a18a083f8a47b6bb6b1604b5be", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "cb09c760c201f82df83babc92a5ffea0a01807fc", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "542fa721594a02d2aee0370a764d306ef48d030c", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "ab4c1ebc40f699f48346f634d7b72b9c5193f315", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "c6d2cefdd05c4810c416fb8d384b5c377bd977bc", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "1ac6cd87d8ddd36c43620f82c4d65b058f725f0f", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "16721797dcef2c7c030ffe73a07f39a65f9323c3", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a0d21bb3279476c777434c40d969ea88ca64f9aa", "versionType": "git"}], "programFiles": ["sound/isa/gus/gus_dma.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.12"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.12", "versionType": "semver"}, {"status": "unaffected", "version": "4.4.293", "versionType": "semver", "lessThanOrEqual": "4.4.*"}, {"status": "unaffected", "version": "4.9.291", "versionType": "semver", "lessThanOrEqual": "4.9.*"}, {"status": "unaffected", "version": "4.14.256", "versionType": "semver", "lessThanOrEqual": "4.14.*"}, {"status": "unaffected", "version": "4.19.218", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.162", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.82", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.5", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "5.16", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["sound/isa/gus/gus_dma.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be"}, {"url": "https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc"}, {"url": "https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c"}, {"url": "https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315"}, {"url": "https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc"}, {"url": "https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f"}, {"url": "https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3"}, {"url": "https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: gus: fix null pointer dereference on pointer block\n\nThe pointer block return from snd_gf1_dma_next_block could be\nnull, so there is a potential null pointer dereference issue.\nFix this by adding a null check before dereference."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.4.293", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.9.291", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.14.256", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.218", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.162", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.82", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.5", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.16", "versionStartIncluding": "2.6.12"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-12-18T11:36:06.718Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47207", "state": "PUBLISHED", "dateUpdated": "2025-12-18T11:36:06.718Z", "dateReserved": "2024-03-25T09:12:14.118Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-04-10T18:56:39.655Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["sound/isa/gus/gus_dma.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "3e28e083dcdf03a18a083f8a47b6bb6b1604b5be", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "cb09c760c201f82df83babc92a5ffea0a01807fc", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "542fa721594a02d2aee0370a764d306ef48d030c", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "ab4c1ebc40f699f48346f634d7b72b9c5193f315", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "c6d2cefdd05c4810c416fb8d384b5c377bd977bc", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "1ac6cd87d8ddd36c43620f82c4d65b058f725f0f", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "16721797dcef2c7c030ffe73a07f39a65f9323c3", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}, {"lessThan": "a0d21bb3279476c777434c40d969ea88ca64f9aa", "status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["sound/isa/gus/gus_dma.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.12"}, {"lessThan": "2.6.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "4.4.*", "status": "unaffected", "version": "4.4.293", "versionType": "semver"}, {"lessThanOrEqual": "4.9.*", "status": "unaffected", "version": "4.9.291", "versionType": "semver"}, {"lessThanOrEqual": "4.14.*", "status": "unaffected", "version": "4.14.256", "versionType": "semver"}, {"lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.218", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.162", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.82", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "5.16", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "83024F84-4857-4CAF-957E-C14804BAC4AF", "versionEndExcluding": "4.4.293", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8B1EE39E-FE30-4B7D-A26F-631135BCBB3F", "versionEndExcluding": "4.9.291", "versionStartIncluding": "4.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FCEB92FF-21BF-4F75-ACA1-6AE1D51A79FC", "versionEndExcluding": "4.14.256", "versionStartIncluding": "4.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4F85F433-5DEA-47D3-B07E-3B1AC474D6E0", "versionEndExcluding": "4.19.218", "versionStartIncluding": "4.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "51A152D8-D5CE-47BD-9041-DEE164DCE99D", "versionEndExcluding": "5.4.162", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "AE501832-500C-4EF1-9489-5C13674F619D", "versionEndExcluding": "5.10.82", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "2128A085-4C0C-4C1E-9E9C-0DD868E2170F", "versionEndExcluding": "5.15.5", "versionStartIncluding": "5.11", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: gus: fix null pointer dereference on pointer block\n\nThe pointer block return from snd_gf1_dma_next_block could be\nnull, so there is a potential null pointer dereference issue.\nFix this by adding a null check before dereference."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: gus: corrige la desreferencia de puntero nulo en el bloque de puntero El bloque de puntero devuelto por snd_gf1_dma_next_block podr\u00eda ser nulo, por lo que existe un posible problema de desreferencia de puntero nulo. Solucione esto agregando una verificaci\u00f3n nula antes de la desreferencia."}], "id": "CVE-2021-47207", "lastModified": "2026-06-17T04:16:54.667", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-47207", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-06-17T18:03:51.697806Z", "version": "2.0.3"}}]}, "published": "2024-04-10T19:15:48.400", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ALSA: gus: fix null pointer dereference on pointer block", "id": "2274630", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2274630"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nALSA: gus: fix null pointer dereference on pointer block\nThe pointer block return from snd_gf1_dma_next_block could be\nnull, so there is a potential null pointer dereference issue.\nFix this by adding a null check before dereference."], "name": "CVE-2021-47207", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-04-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47207\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47207\nhttps://lore.kernel.org/linux-cve-announce/2024041038-CVE-2021-47207-7ac9@gregkh/T"], "threat_severity": "Low"}

{}