CVE-2024-38602

{"id": "CVE-2024-38602", "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": "2024-06-19T14:15:20.183", "references": [{"url": "https://git.kernel.org/stable/c/1ea02699c7557eeb35ccff2bd822de1b3e09d868", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/38eb01edfdaa1562fa00429be2e33f45383b1b3a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/81d8240b0a243b3ddd8fa8aa172f1acc2f7cc8f3", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ae467750a3765dd1092eb29f58247950a2f9b60c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b505e0319852b08a3a716b64620168eab21f4ced", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-Other"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nax25: Fix reference count leak issues of ax25_dev\n\nThe ax25_addr_ax25dev() and ax25_dev_device_down() exist a reference\ncount leak issue of the object \"ax25_dev\".\n\nMemory leak issue in ax25_addr_ax25dev():\n\nThe reference count of the object \"ax25_dev\" can be increased multiple\ntimes in ax25_addr_ax25dev(). This will cause a memory leak.\n\nMemory leak issues in ax25_dev_device_down():\n\nThe reference count of ax25_dev is set to 1 in ax25_dev_device_up() and\nthen increase the reference count when ax25_dev is added to ax25_dev_list.\nAs a result, the reference count of ax25_dev is 2. But when the device is\nshutting down. The ax25_dev_device_down() drops the reference count once\nor twice depending on if we goto unlock_put or not, which will cause\nmemory leak.\n\nAs for the issue of ax25_addr_ax25dev(), it is impossible for one pointer\nto be on a list twice. So add a break in ax25_addr_ax25dev(). As for the\nissue of ax25_dev_device_down(), increase the reference count of ax25_dev\nonce in ax25_dev_device_up() and decrease the reference count of ax25_dev\nafter it is removed from the ax25_dev_list."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ax25: soluciona problemas de p\u00e9rdida de recuento de referencias de ax25_dev. Ax25_addr_ax25dev() y ax25_dev_device_down() existen un problema de p\u00e9rdida de recuento de referencias del objeto \"ax25_dev\". Problema de p\u00e9rdida de memoria en ax25_addr_ax25dev(): el recuento de referencias del objeto \"ax25_dev\" se puede aumentar varias veces en ax25_addr_ax25dev(). Esto provocar\u00e1 una p\u00e9rdida de memoria. Problemas de p\u00e9rdida de memoria en ax25_dev_device_down(): el recuento de referencias de ax25_dev se establece en 1 en ax25_dev_device_up() y luego aumenta el recuento de referencias cuando se agrega ax25_dev a ax25_dev_list. Como resultado, el recuento de referencia de ax25_dev es 2. Pero cuando el dispositivo se est\u00e1 apagando. El ax25_dev_device_down() reduce el recuento de referencias una o dos veces dependiendo de si vamos a unlock_put o no, lo que provocar\u00e1 una p\u00e9rdida de memoria. En cuanto al problema de ax25_addr_ax25dev(), es imposible que un puntero est\u00e9 en una lista dos veces. Entonces agregue una interrupci\u00f3n en ax25_addr_ax25dev(). En cuanto al problema de ax25_dev_device_down(), aumente el recuento de referencias de ax25_dev una vez en ax25_dev_device_up() y disminuya el recuento de referencias de ax25_dev despu\u00e9s de que se elimine de ax25_dev_list."}], "lastModified": "2024-08-27T16:01:39.983", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "899D7A4F-A23D-4FA2-84B4-4BAA03F98BBC", "versionEndExcluding": "6.1.93", "versionStartIncluding": "5.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FCE796DF-3B50-4DC6-BAE5-95271068FC9E", "versionEndExcluding": "6.6.33", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "80550309-67AB-4FD1-AC07-3DED5C4F01B2", "versionEndExcluding": "6.8.12", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E07124C1-19E8-4D21-828D-9932A01D3011", "versionEndExcluding": "6.9.3", "versionStartIncluding": "6.9"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}