{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-47295", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T13:27:52.130Z", "datePublished": "2024-05-21T14:35:18.696Z", "dateUpdated": "2026-05-11T13:51:43.603Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:51:43.603Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sched: fix memory leak in tcindex_partial_destroy_work\n\nSyzbot reported memory leak in tcindex_set_parms(). The problem was in\nnon-freed perfect hash in tcindex_partial_destroy_work().\n\nIn tcindex_set_parms() new tcindex_data is allocated and some fields from\nold one are copied to new one, but not the perfect hash. Since\ntcindex_partial_destroy_work() is the destroy function for old\ntcindex_data, we need to free perfect hash to avoid memory leak." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/sched/cls_tcindex.c" ], "versions": [ { "version": "331b72922c5f58d48fd5500acadc91777cc31970", "lessThan": "53af9c793f644d5841d84d8e0ad83bd7ab47f3e0", "status": "affected", "versionType": "git" }, { "version": "331b72922c5f58d48fd5500acadc91777cc31970", "lessThan": "01d0d2b8b4e3cf2110baba9371c0c3d04ad5c77b", "status": "affected", "versionType": "git" }, { "version": "331b72922c5f58d48fd5500acadc91777cc31970", "lessThan": "8d7924ce85bae64e7a67c366c7c50840f49f3a62", "status": "affected", "versionType": "git" }, { "version": "331b72922c5f58d48fd5500acadc91777cc31970", "lessThan": "7a6fb69bbcb21e9ce13bdf18c008c268874f0480", "status": "affected", "versionType": "git" }, { "version": "331b72922c5f58d48fd5500acadc91777cc31970", "lessThan": "8e9662fde6d63c78eb1350f6167f64c9d71a865b", "status": "affected", "versionType": "git" }, { "version": "331b72922c5f58d48fd5500acadc91777cc31970", "lessThan": "18c3fa7a7fdbb4d21dafc8a7710ae2c1680930f6", "status": "affected", "versionType": "git" }, { "version": "331b72922c5f58d48fd5500acadc91777cc31970", "lessThan": "cac71d27745f92ee13f0ecc668ffe151a4a9c9b1", "status": "affected", "versionType": "git" }, { "version": "331b72922c5f58d48fd5500acadc91777cc31970", "lessThan": "f5051bcece50140abd1a11a2d36dc3ec5484fc32", "status": "affected", "versionType": "git" }, { "version": "331b72922c5f58d48fd5500acadc91777cc31970", "lessThan": "7c183dc0af472dec33d2c0786a5e356baa8cad19", "status": "affected", "versionType": "git" }, { "version": "331b72922c5f58d48fd5500acadc91777cc31970", "lessThan": "3abebc503a5148072052c229c6b04b329a420ecd", "status": "affected", "versionType": "git" }, { "version": "331b72922c5f58d48fd5500acadc91777cc31970", "lessThan": "372ae77cf11d11fb118cbe2d37def9dd5f826abd", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/sched/cls_tcindex.c" ], "versions": [ { "version": "3.18", "status": "affected" }, { "version": "0", "lessThan": "3.18", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.308", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.276", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.136", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.235", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.54", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.173", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.13.6", "lessThanOrEqual": "5.13.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.100", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.18", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2.5", "lessThanOrEqual": "6.2.*", "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": "3.18", "versionEndExcluding": "4.14.308" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "4.19.276" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.4.136" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.4.235" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.10.54" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.10.173" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.13.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.15.100" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "6.1.18" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "6.2.5" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/53af9c793f644d5841d84d8e0ad83bd7ab47f3e0" }, { "url": "https://git.kernel.org/stable/c/01d0d2b8b4e3cf2110baba9371c0c3d04ad5c77b" }, { "url": "https://git.kernel.org/stable/c/8d7924ce85bae64e7a67c366c7c50840f49f3a62" }, { "url": "https://git.kernel.org/stable/c/7a6fb69bbcb21e9ce13bdf18c008c268874f0480" }, { "url": "https://git.kernel.org/stable/c/8e9662fde6d63c78eb1350f6167f64c9d71a865b" }, { "url": "https://git.kernel.org/stable/c/18c3fa7a7fdbb4d21dafc8a7710ae2c1680930f6" }, { "url": "https://git.kernel.org/stable/c/cac71d27745f92ee13f0ecc668ffe151a4a9c9b1" }, { "url": "https://git.kernel.org/stable/c/f5051bcece50140abd1a11a2d36dc3ec5484fc32" }, { "url": "https://git.kernel.org/stable/c/7c183dc0af472dec33d2c0786a5e356baa8cad19" }, { "url": "https://git.kernel.org/stable/c/3abebc503a5148072052c229c6b04b329a420ecd" }, { "url": "https://git.kernel.org/stable/c/372ae77cf11d11fb118cbe2d37def9dd5f826abd" } ], "title": "net: sched: fix memory leak in tcindex_partial_destroy_work", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-400", "lang": "en", "description": "CWE-400 Uncontrolled Resource Consumption" } ] } ], "affected": [ { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "331b72922c5f", "status": "affected", "lessThan": "8d7924ce85ba", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "331b72922c5f", "status": "affected", "lessThan": "8e9662fde6d6", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "331b72922c5f", "status": "affected", "lessThan": "cac71d27745f", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "331b72922c5f", "status": "affected", "lessThan": "f5051bcece50", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "3.18", "status": "affected" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "0", "status": "unaffected", "lessThan": "3.18", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "5.4.136", "status": "unaffected", "lessThanOrEqual": "5.5", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "5.10.54", "status": "unaffected", "lessThanOrEqual": "5.11", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "5.13.6", "status": "unaffected", "lessThanOrEqual": "5.14", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "5.14", "status": "unaffected" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2024-06-06T17:36:31.882320Z", "id": "CVE-2021-47295", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "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": "2024-06-06T17:47:38.478Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.570Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/8d7924ce85bae64e7a67c366c7c50840f49f3a62", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/8e9662fde6d63c78eb1350f6167f64c9d71a865b", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/cac71d27745f92ee13f0ecc668ffe151a4a9c9b1", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/f5051bcece50140abd1a11a2d36dc3ec5484fc32", "tags": [ "x_transferred" ] } ] } ] } }