{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47064","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-02-29T22:33:44.295Z","datePublished":"2024-02-29T22:37:38.257Z","dateUpdated":"2026-05-11T13:47:22.954Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T13:47:22.954Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmt76: fix potential DMA mapping leak\n\nWith buf uninitialized in mt76_dma_tx_queue_skb_raw, its field skip_unmap\ncould potentially inherit a non-zero value from stack garbage.\nIf this happens, it will cause DMA mappings for MCU command frames to not be\nunmapped after completion"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/dma.c"],"versions":[{"version":"27d5c528a7ca08dcd44877fdd9fc08b76630bf77","lessThan":"9fa26701cd1fc4d932d431971efc5746325bdfce","status":"affected","versionType":"git"},{"version":"27d5c528a7ca08dcd44877fdd9fc08b76630bf77","lessThan":"9b68ce2856dadc0e1cb6fd21fbeb850da49efd08","status":"affected","versionType":"git"},{"version":"27d5c528a7ca08dcd44877fdd9fc08b76630bf77","lessThan":"91b9548d413fda488ea853cd1b9f59b572db3a0c","status":"affected","versionType":"git"},{"version":"27d5c528a7ca08dcd44877fdd9fc08b76630bf77","lessThan":"b4403cee6400c5f679e9c4a82b91d61aa961eccf","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/net/wireless/mediatek/mt76/dma.c"],"versions":[{"version":"5.10","status":"affected"},{"version":"0","lessThan":"5.10","status":"unaffected","versionType":"semver"},{"version":"5.10.37","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.11.21","lessThanOrEqual":"5.11.*","status":"unaffected","versionType":"semver"},{"version":"5.12.4","lessThanOrEqual":"5.12.*","status":"unaffected","versionType":"semver"},{"version":"5.13","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":"5.10","versionEndExcluding":"5.10.37"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.11.21"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.12.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.13"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce"},{"url":"https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08"},{"url":"https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c"},{"url":"https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf"}],"title":"mt76: fix potential DMA mapping leak","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":5.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"LOW","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2024-03-01T15:38:34.929881Z","id":"CVE-2021-47064","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":"2024-11-07T20:53:13.305Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T05:24:39.820Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/9fa26701cd1fc4d932d431971efc5746325bdfce","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/9b68ce2856dadc0e1cb6fd21fbeb850da49efd08","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/91b9548d413fda488ea853cd1b9f59b572db3a0c","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/b4403cee6400c5f679e9c4a82b91d61aa961eccf","tags":["x_transferred"]}]}]}}