{"id":"CVE-2021-46905","state":"PUBLISHED","title":"net: hso: fix NULL-deref on disconnect regression","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hso: fix NULL-deref on disconnect regression\n\nCommit 8a12f8836145 (\"net: hso: fix null-ptr-deref during tty device\nunregistration\") fixed the racy minor allocation reported by syzbot, but\nintroduced an unconditional NULL-pointer dereference on every disconnect\ninstead.\n\nSpecifically, the serial device table must no longer be accessed after\nthe minor has been released by hso_serial_tty_unregister().","publishedAt":"2024-02-25T14:03:40.944Z","updatedAt":"2026-05-23T15:18:41.989Z","severity":null,"assigner":"Linux","products":["Linux 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