394 lines
18 KiB
JSON
394 lines
18 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2021-47477",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-05-22T06:20:56.200Z",
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"datePublished": "2024-05-22T08:19:30.860Z",
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"dateUpdated": "2026-05-11T13:55:26.662Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-11T13:55:26.662Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: dt9812: fix DMA buffers on stack\n\nUSB transfer buffers are typically mapped for DMA and must not be\nallocated on the stack or transfers will fail.\n\nAllocate proper transfer buffers in the various command helpers and\nreturn an error on short transfers instead of acting on random stack\ndata.\n\nNote that this also fixes a stack info leak on systems where DMA is not\nused as 32 bytes are always sent to the device regardless of how short\nthe command is."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/comedi/drivers/dt9812.c"
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],
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"versions": [
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{
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"version": "63274cd7d38a3322d90b66a5bc976de1fb899051",
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"lessThan": "a6af69768d5cb4b2528946d53be5fa19ade37723",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "63274cd7d38a3322d90b66a5bc976de1fb899051",
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"lessThan": "365a346cda82f51d835c49136a00a9df8a78c7f2",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "63274cd7d38a3322d90b66a5bc976de1fb899051",
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"lessThan": "8a52bc480992c7c9da3ebfea456af731f50a4b97",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "63274cd7d38a3322d90b66a5bc976de1fb899051",
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"lessThan": "39ea61037ae78f14fa121228dd962ea3280eacf3",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "63274cd7d38a3322d90b66a5bc976de1fb899051",
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"lessThan": "3efb7af8ac437085b6c776e5b54830b149d86efe",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "63274cd7d38a3322d90b66a5bc976de1fb899051",
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"lessThan": "786f5b03450454557ff858a8bead5d7c0cbf78d6",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "63274cd7d38a3322d90b66a5bc976de1fb899051",
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"lessThan": "3ac273d154d634e2034508a14db82a95d7ad12ed",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "63274cd7d38a3322d90b66a5bc976de1fb899051",
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"lessThan": "20cebb8b620dc987e55ddc46801de986e081757e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "63274cd7d38a3322d90b66a5bc976de1fb899051",
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"lessThan": "536de747bc48262225889a533db6650731ab25d3",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/comedi/drivers/dt9812.c"
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],
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"versions": [
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{
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"version": "2.6.29",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "2.6.29",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "4.4.292",
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"lessThanOrEqual": "4.4.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "4.9.290",
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"lessThanOrEqual": "4.9.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "4.14.255",
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"lessThanOrEqual": "4.14.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "4.19.217",
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"lessThanOrEqual": "4.19.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.4.159",
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"lessThanOrEqual": "5.4.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.79",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.14.18",
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"lessThanOrEqual": "5.14.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.2",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.16",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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"cpeMatch": [
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{
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"url": "https://git.kernel.org/stable/c/786f5b03450454557ff858a8bead5d7c0cbf78d6"
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{
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"url": "https://git.kernel.org/stable/c/3ac273d154d634e2034508a14db82a95d7ad12ed"
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"url": "https://git.kernel.org/stable/c/20cebb8b620dc987e55ddc46801de986e081757e"
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{
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}
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],
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"title": "comedi: dt9812: fix DMA buffers on stack",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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"descriptions": [
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{
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"type": "CWE",
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"lang": "en",
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"description": "CWE-noinfo Not enough information"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 5.3,
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"attackVector": "NETWORK",
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
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"integrityImpact": "NONE",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "LOW",
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"privilegesRequired": "NONE",
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"confidentialityImpact": "NONE"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2024-05-22T15:50:06.158354Z",
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"id": "CVE-2021-47477",
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"options": [
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{
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"Exploitation": "none"
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"title": "CISA ADP Vulnrichment",
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} |