CVE-2022-49890

{"id": "CVE-2022-49890", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "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": "2025-05-01T15:16:14.000", "references": [{"url": "https://git.kernel.org/stable/c/0c3e6288da650d1ec911a259c77bc2d88e498603", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2de8eec8afb75792440b8900a01d52b8f6742fd1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6bb00eb21c0fbf18e5d3538c9ff0cf63fd0ace85", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7480aeff0093d8c54377553ec6b31110bea37b4d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8cf0a1bc12870d148ae830a4ba88cfdf0e879cee", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/90577bcc01c4188416a47269f8433f70502abe98", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/cdf01c807e974048c43c7fd3ca574f6086a57906", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-401"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncapabilities: fix potential memleak on error path from vfs_getxattr_alloc()\n\nIn cap_inode_getsecurity(), we will use vfs_getxattr_alloc() to\ncomplete the memory allocation of tmpbuf, if we have completed\nthe memory allocation of tmpbuf, but failed to call handler->get(...),\nthere will be a memleak in below logic:\n\n |-- ret = (int)vfs_getxattr_alloc(mnt_userns, ...)\n | /* ^^^ alloc for tmpbuf */\n |-- value = krealloc(*xattr_value, error + 1, flags)\n | /* ^^^ alloc memory */\n |-- error = handler->get(handler, ...)\n | /* error! */\n |-- *xattr_value = value\n | /* xattr_value is &tmpbuf (memory leak!) */\n\nSo we will try to free(tmpbuf) after vfs_getxattr_alloc() fails to fix it.\n\n[PM: subject line and backtrace tweaks]"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: capacidades: reparar posible fuga de memoria en la ruta de error de vfs_getxattr_alloc() En cap_inode_getsecurity(), utilizaremos vfs_getxattr_alloc() para completar la asignaci\u00f3n de memoria de tmpbuf, si hemos completado la asignaci\u00f3n de memoria de tmpbuf, pero no pudimos llamar a handler->get(...), habr\u00e1 una fuga de memoria en la siguiente l\u00f3gica: |-- ret = (int)vfs_getxattr_alloc(mnt_userns, ...) | /* ^^^ asignar para tmpbuf */ |-- valor = krealloc(*xattr_value, error + 1, flags) | /* ^^^ asignar memoria */ |-- error = handler->get(handler, ...) | /* \u00a1error! */ |-- *xattr_value = valor | /* xattr_value es &tmpbuf (\u00a1p\u00e9rdida de memoria!) */ Intentaremos liberar (tmpbuf) despu\u00e9s de que vfs_getxattr_alloc() no pueda solucionarlo. [MP: l\u00ednea de asunto y ajustes de backtrace]"}], "lastModified": "2025-05-07T13:19:54.100", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CCE1B290-651F-4D7F-B83A-AD7466E2CBB9", "versionEndExcluding": "4.14.299", "versionStartIncluding": "4.14"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "ABED5D97-9B16-4CF6-86E3-D5F5C4358E35", "versionEndExcluding": "4.19.265", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1D67A077-EB45-4ADE-94CD-F9A76F6C319C", "versionEndExcluding": "5.4.224", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "475D097C-AB5A-4CF5-899F-413077854ABD", "versionEndExcluding": "5.10.154", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AB8B27B9-B41B-42D5-AE67-0A89A8A8EEB1", "versionEndExcluding": "5.15.78", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EC9A754E-625D-42F3-87A7-960D643E2867", "versionEndExcluding": "6.0.8", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}