{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-47305", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T13:27:52.133Z", "datePublished": "2024-05-21T14:35:25.345Z", "dateUpdated": "2026-05-11T13:51:55.194Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:51:55.194Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndma-buf/sync_file: Don't leak fences on merge failure\n\nEach add_fence() call does a dma_fence_get() on the relevant fence. In\nthe error path, we weren't calling dma_fence_put() so all those fences\ngot leaked. Also, in the krealloc_array failure case, we weren't\nfreeing the fences array. Instead, ensure that i and fences are always\nzero-initialized and dma_fence_put() all the fences and kfree(fences) on\nevery error path." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/dma-buf/sync_file.c" ], "versions": [ { "version": "a02b9dc90d844cc7df7b63264e7920cc425052d9", "lessThan": "19f51c2529339280d2c8c6427cd3e21ddf1ac3f8", "status": "affected", "versionType": "git" }, { "version": "a02b9dc90d844cc7df7b63264e7920cc425052d9", "lessThan": "e0355a0ad31a1d677b2a4514206de4902bd550e8", "status": "affected", "versionType": "git" }, { "version": "a02b9dc90d844cc7df7b63264e7920cc425052d9", "lessThan": "41f45e91c92c8480242ea448d54e28c753b13902", "status": "affected", "versionType": "git" }, { "version": "a02b9dc90d844cc7df7b63264e7920cc425052d9", "lessThan": "0d514185ae792d3a1903c8e1a83899aa996705ce", "status": "affected", "versionType": "git" }, { "version": "a02b9dc90d844cc7df7b63264e7920cc425052d9", "lessThan": "19edcd97727aae9362444a859a24d99a8730cb27", "status": "affected", "versionType": "git" }, { "version": "a02b9dc90d844cc7df7b63264e7920cc425052d9", "lessThan": "ffe000217c5068c5da07ccb1c0f8cce7ad767435", "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/dma-buf/sync_file.c" ], "versions": [ { "version": "4.9", "status": "affected" }, { "version": "0", "lessThan": "4.9", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.241", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.199", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.135", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.53", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.13.5", "lessThanOrEqual": "5.13.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.14", "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": "4.9", "versionEndExcluding": "4.14.241" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "4.19.199" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "5.4.135" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "5.10.53" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "5.13.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "5.14" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/19f51c2529339280d2c8c6427cd3e21ddf1ac3f8" }, { "url": "https://git.kernel.org/stable/c/e0355a0ad31a1d677b2a4514206de4902bd550e8" }, { "url": "https://git.kernel.org/stable/c/41f45e91c92c8480242ea448d54e28c753b13902" }, { "url": "https://git.kernel.org/stable/c/0d514185ae792d3a1903c8e1a83899aa996705ce" }, { "url": "https://git.kernel.org/stable/c/19edcd97727aae9362444a859a24d99a8730cb27" }, { "url": "https://git.kernel.org/stable/c/ffe000217c5068c5da07ccb1c0f8cce7ad767435" } ], "title": "dma-buf/sync_file: Don't leak fences on merge failure", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-06-17T17:37:39.251165Z", "id": "CVE-2021-47305", "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": "2024-06-17T17:39:09.946Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.577Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/19f51c2529339280d2c8c6427cd3e21ddf1ac3f8", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/e0355a0ad31a1d677b2a4514206de4902bd550e8", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/41f45e91c92c8480242ea448d54e28c753b13902", "tags": [ "x_transferred" ] }, { "url": 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