{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-47476","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-05-22T06:20:56.200Z","datePublished":"2024-05-22T08:19:30.201Z","dateUpdated":"2025-05-04T07:11:45.313Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:11:45.313Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: ni_usb6501: fix NULL-deref in command paths\n\nThe driver uses endpoint-sized USB transfer buffers but had no sanity\nchecks on the sizes. This can lead to zero-size-pointer dereferences or\noverflowed transfer buffers in ni6501_port_command() and\nni6501_counter_command() if a (malicious) device has smaller max-packet\nsizes than expected (or when doing descriptor fuzz testing).\n\nAdd the missing sanity checks to probe()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/comedi/drivers/ni_usb6501.c"],"versions":[{"version":"a03bb00e50ab4c07107da58a52a0bff7943f360c","lessThan":"58478143771b20ab219937b1c30a706590a59224","status":"affected","versionType":"git"},{"version":"a03bb00e50ab4c07107da58a52a0bff7943f360c","lessThan":"aa39738423503825625853b643b9e99d11c23816","status":"affected","versionType":"git"},{"version":"a03bb00e50ab4c07107da58a52a0bff7943f360c","lessThan":"df7b1238f3b599a0b9284249772cdfd1ea83a632","status":"affected","versionType":"git"},{"version":"a03bb00e50ab4c07107da58a52a0bff7943f360c","lessThan":"bc51111bf6e8e7b6cc94b133e4c291273a16acd1","status":"affected","versionType":"git"},{"version":"a03bb00e50ab4c07107da58a52a0bff7943f360c","lessThan":"b0156b7c9649d8f55a2ce3d3258509f1b2a181c3","status":"affected","versionType":"git"},{"version":"a03bb00e50ab4c07107da58a52a0bff7943f360c","lessThan":"ef143dc0c3defe56730ecd3a9de7b3e1d7e557c1","status":"affected","versionType":"git"},{"version":"a03bb00e50ab4c07107da58a52a0bff7943f360c","lessThan":"4a9d43cb5d5f39fa39fc1da438517004cc95f7ea","status":"affected","versionType":"git"},{"version":"a03bb00e50ab4c07107da58a52a0bff7943f360c","lessThan":"d6a727a681a39ae4f73081a9bedb45d14f95bdd1","status":"affected","versionType":"git"},{"version":"a03bb00e50ab4c07107da58a52a0bff7943f360c","lessThan":"907767da8f3a925b060c740e0b5c92ea7dbec440","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/comedi/drivers/ni_usb6501.c"],"versions":[{"version":"3.18","status":"affected"},{"version":"0","lessThan":"3.18","status":"unaffected","versionType":"semver"},{"version":"4.4.292","lessThanOrEqual":"4.4.*","status":"unaffected","versionType":"semver"},{"version":"4.9.290","lessThanOrEqual":"4.9.*","status":"unaffected","versionType":"semver"},{"version":"4.14.255","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.217","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.159","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.79","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.14.18","lessThanOrEqual":"5.14.*","status":"unaffected","versionType":"semver"},{"version":"5.15.2","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":"3.18","versionEndExcluding":"4.4.292"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"4.9.290"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"4.14.255"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"4.19.217"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"5.4.159"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"5.10.79"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"5.14.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"5.15.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"5.16"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/58478143771b20ab219937b1c30a706590a59224"},{"url":"https://git.kernel.org/stable/c/aa39738423503825625853b643b9e99d11c23816"},{"url":"https://git.kernel.org/stable/c/df7b1238f3b599a0b9284249772cdfd1ea83a632"},{"url":"https://git.kernel.org/stable/c/bc51111bf6e8e7b6cc94b133e4c291273a16acd1"},{"url":"https://git.kernel.org/stable/c/b0156b7c9649d8f55a2ce3d3258509f1b2a181c3"},{"url":"https://git.kernel.org/stable/c/ef143dc0c3defe56730ecd3a9de7b3e1d7e557c1"},{"url":"https://git.kernel.org/stable/c/4a9d43cb5d5f39fa39fc1da438517004cc95f7ea"},{"url":"https://git.kernel.org/stable/c/d6a727a681a39ae4f73081a9bedb45d14f95bdd1"},{"url":"https://git.kernel.org/stable/c/907767da8f3a925b060c740e0b5c92ea7dbec440"}],"title":"comedi: 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