{"schema_version":"1","data":[{"id":23224,"advisory_id":"26dc7205-c0cd-4ce8-a9e2-526dc3617522","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2023-3609","source_published_at":"2023-07-21T20:47:12.172+00:00","published_at":"2026-10-25T06:15:13.226783+00:00","extraction_method":"structured","technologies":["core-cve","kernel"],"cve_ids":["CVE-2023-3609"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"Use-after-free in Linux kernel's net/sched: cls_u32 component","summary":"A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. 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