CVE-2024-50005

{"id": "CVE-2024-50005", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2024-10-21T19:15:04.143", "references": [{"url": "https://git.kernel.org/stable/c/540138377b22f601f06f55ebfa3ca171dcab471a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bff1709b3980bd7f80be6786f64cc9a9ee9e56da", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d18f669461811dfe2915d5554ab2a9834f810013", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e676e4ea76bbe7f1156d8c326b9b6753849481c2", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmac802154: Fix potential RCU dereference issue in mac802154_scan_worker\n\nIn the `mac802154_scan_worker` function, the `scan_req->type` field was\naccessed after the RCU read-side critical section was unlocked. According\nto RCU usage rules, this is illegal and can lead to unpredictable\nbehavior, such as accessing memory that has been updated or causing\nuse-after-free issues.\n\nThis possible bug was identified using a static analysis tool developed\nby myself, specifically designed to detect RCU-related issues.\n\nTo address this, the `scan_req->type` value is now stored in a local\nvariable `scan_req_type` while still within the RCU read-side critical\nsection. The `scan_req_type` is then used after the RCU lock is released,\nensuring that the type value is safely accessed without violating RCU\nrules."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mac802154: Se soluciona un posible problema de desreferencia de RCU en mac802154_scan_worker En la funci\u00f3n `mac802154_scan_worker`, se accedi\u00f3 al campo `scan_req->type` despu\u00e9s de que se desbloqueara la secci\u00f3n cr\u00edtica del lado de lectura de RCU. Seg\u00fan las reglas de uso de RCU, esto es ilegal y puede provocar un comportamiento impredecible, como acceder a la memoria que se ha actualizado o causar problemas de use after free. Este posible error se identific\u00f3 utilizando una herramienta de an\u00e1lisis est\u00e1tico desarrollada por m\u00ed, dise\u00f1ada espec\u00edficamente para detectar problemas relacionados con RCU. Para solucionar esto, el valor `scan_req->type` ahora se almacena en una variable local `scan_req_type` mientras a\u00fan est\u00e1 dentro de la secci\u00f3n cr\u00edtica del lado de lectura de RCU. Luego, `scan_req_type` se usa despu\u00e9s de que se libera el bloqueo de RCU, lo que garantiza que se acceda al valor de tipo de manera segura sin violar las reglas de RCU."}], "lastModified": "2024-11-07T19:27:01.613", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D48A8C35-F8B9-4BFE-AC95-D7F90303D311", "versionEndExcluding": "6.6.55", "versionStartIncluding": "6.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4C16BCE0-FFA0-4599-BE0A-1FD65101C021", "versionEndExcluding": "6.10.14", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "54D9C704-D679-41A7-9C40-10A6B1E7FFE9", "versionEndExcluding": "6.11.3", "versionStartIncluding": "6.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}