CVE-2024-40909

{"id": "CVE-2024-40909", "cveTags": [], "metrics": {}, "published": "2024-07-12T13:15:14.137", "references": [{"url": "https://git.kernel.org/stable/c/2884dc7d08d98a89d8d65121524bb7533183a63a", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/91cff53136daeff50816b0baeafd38a6976f6209", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fa97b8fed9896f1e89cb657513e483a152d4c382", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Awaiting Analysis", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix a potential use-after-free in bpf_link_free()\n\nAfter commit 1a80dbcb2dba, bpf_link can be freed by\nlink->ops->dealloc_deferred, but the code still tests and uses\nlink->ops->dealloc afterward, which leads to a use-after-free as\nreported by syzbot. Actually, one of them should be sufficient, so\njust call one of them instead of both. Also add a WARN_ON() in case\nof any problematic implementation."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: bpf: corrige un posible use-after-free en bpf_link_free() Despu\u00e9s del commit 1a80dbcb2dba, bpf_link se puede liberar mediante link->ops->dealloc_deferred, pero el c\u00f3digo a\u00fan prueba y usa link->ops->dealloc despu\u00e9s, lo que conduce a un use-after-free seg\u00fan lo informado por syzbot. En realidad, uno de ellos deber\u00eda ser suficiente, as\u00ed que llame a uno de ellos en lugar de a ambos. Tambi\u00e9n agregue WARN_ON() en caso de cualquier implementaci\u00f3n problem\u00e1tica."}], "lastModified": "2024-07-12T16:34:58.687", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}