CVE-2021-47433

{"id": "CVE-2021-47433", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "[email protected]", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-05-22T07:15:08.347", "references": [{"url": "https://git.kernel.org/stable/c/0e309e1152fc34ef75991d9d69b165dbf75bf26c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/0e32a2b85c7d92ece86c17dfef390c5ed79c6378", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4afb912f439c4bc4e6a4f3e7547f2e69e354108f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/0e309e1152fc34ef75991d9d69b165dbf75bf26c", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/0e32a2b85c7d92ece86c17dfef390c5ed79c6378", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/4afb912f439c4bc4e6a4f3e7547f2e69e354108f", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "[email protected]", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix abort logic in btrfs_replace_file_extents\n\nError injection testing uncovered a case where we'd end up with a\ncorrupt file system with a missing extent in the middle of a file. This\noccurs because the if statement to decide if we should abort is wrong.\n\nThe only way we would abort in this case is if we got a ret !=\n-EOPNOTSUPP and we called from the file clone code. However the\nprealloc code uses this path too. Instead we need to abort if there is\nan error, and the only error we _don't_ abort on is -EOPNOTSUPP and only\nif we came from the clone file code."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: btrfs: corrige la l\u00f3gica de aborto en btrfs_replace_file_extents Las pruebas de inyecci\u00f3n de errores descubrieron un caso en el que terminar\u00edamos con un sistema de archivos corrupto al que le faltaba una extensi\u00f3n en medio de un archivo. Esto ocurre porque la declaraci\u00f3n if para decidir si debemos abortar es incorrecta. La \u00fanica manera de abortar en este caso es si obtenemos un ret! = -EOPNOTSUPP y llamamos desde el c\u00f3digo de clonaci\u00f3n del archivo. Sin embargo, el c\u00f3digo de preasignaci\u00f3n tambi\u00e9n utiliza esta ruta. En lugar de eso, debemos abortar si hay un error, y el \u00fanico error por el que _no_ abortamos es -EOPNOTSUPP y solo si venimos del c\u00f3digo del archivo clonado."}], "lastModified": "2025-09-25T16:02:16.790", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "271284AE-D4B8-4931-A945-91F5B7D00C32", "versionEndExcluding": "5.10.75"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BF43A331-D430-4B9D-A612-E63C62AE4A86", "versionEndExcluding": "5.14.14", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E46C74C6-B76B-4C94-A6A4-FD2FFF62D644"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "60134C3A-06E4-48C1-B04F-2903732A4E56"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0460DA88-8FE1-46A2-9DDA-1F1ABA552E71"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AF55383D-4DF2-45DC-93F7-571F4F978EAB"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9E9481B2-8AA6-4CBD-B5D3-C10F51FF6D01"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}