{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-47509", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-24T15:02:54.823Z", "datePublished": "2024-05-24T15:09:25.349Z", "dateUpdated": "2026-05-11T13:56:01.640Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:56:01.640Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: pcm: oss: Limit the period size to 16MB\n\nSet the practical limit to the period size (the fragment shift in OSS)\ninstead of a full 31bit; a too large value could lead to the exhaust\nof memory as we allocate temporary buffers of the period size, too.\n\nAs of this patch, we set to 16MB limit, which should cover all use\ncases." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "sound/core/oss/pcm_oss.c" ], "versions": [ { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "d1bb703ad050de9095f10b2d3416c32921ac6bcc", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "b02a41eebcc36d4f07196780f2e165ca2c499257", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "be55f306396cd62c6889286a7194fd8b53363aeb", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "2e54cf6794bf82a54aaefc78da13819aea9cd28a", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "76f19e4cbb548e28547f8c328aa0bfb3a10222d3", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "ad45babf7886e7a212ee1d5eda9ef49f696db43c", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "35a3e511032146941085f87dd9fb5b82ea5c00a2", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "8839c8c0f77ab8fc0463f4ab8b37fca3f70677c2", "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/core/oss/pcm_oss.c" ], "versions": [ { "version": "2.6.12", "status": "affected" }, { "version": "0", "lessThan": "2.6.12", "status": "unaffected", "versionType": "semver" }, { "version": "4.4.295", "lessThanOrEqual": "4.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.293", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.258", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.221", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.165", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.85", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.8", "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": "4.4.295" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "4.9.293" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "4.14.258" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "4.19.221" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.4.165" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.10.85" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.15.8" }, { "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/d1bb703ad050de9095f10b2d3416c32921ac6bcc" }, { "url": "https://git.kernel.org/stable/c/b02a41eebcc36d4f07196780f2e165ca2c499257" }, { "url": "https://git.kernel.org/stable/c/be55f306396cd62c6889286a7194fd8b53363aeb" }, { "url": "https://git.kernel.org/stable/c/2e54cf6794bf82a54aaefc78da13819aea9cd28a" }, { "url": "https://git.kernel.org/stable/c/76f19e4cbb548e28547f8c328aa0bfb3a10222d3" }, { "url": "https://git.kernel.org/stable/c/ad45babf7886e7a212ee1d5eda9ef49f696db43c" }, { "url": "https://git.kernel.org/stable/c/35a3e511032146941085f87dd9fb5b82ea5c00a2" }, { "url": "https://git.kernel.org/stable/c/8839c8c0f77ab8fc0463f4ab8b37fca3f70677c2" } ], "title": "ALSA: pcm: oss: Limit the period size to 16MB", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "lang": "en", "description": "CWE-noinfo Not enough information" } ] } ], "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": "2024-05-29T17:05:25.970699Z", "id": "CVE-2021-47509", "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": "2024-11-07T17:32:21.679Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:39:59.773Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/d1bb703ad050de9095f10b2d3416c32921ac6bcc", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/b02a41eebcc36d4f07196780f2e165ca2c499257", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/be55f306396cd62c6889286a7194fd8b53363aeb", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/2e54cf6794bf82a54aaefc78da13819aea9cd28a", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/76f19e4cbb548e28547f8c328aa0bfb3a10222d3", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/ad45babf7886e7a212ee1d5eda9ef49f696db43c", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/35a3e511032146941085f87dd9fb5b82ea5c00a2", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/8839c8c0f77ab8fc0463f4ab8b37fca3f70677c2", "tags": [ "x_transferred" ] } ] } ] } }