{"id":"CVE-2025-38262","summary":"tty: serial: uartlite: register uart driver in init","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ntty: serial: uartlite: register uart driver in init\n\nWhen two instances of uart devices are probing, a concurrency race can\noccur. If one thread calls uart_register_driver function, which first\nallocates and assigns memory to 'uart_state' member of uart_driver\nstructure, the other instance can bypass uart driver registration and\ncall ulite_assign. This calls uart_add_one_port, which expects the uart\ndriver to be fully initialized. This leads to a kernel panic due to a\nnull pointer dereference:\n\n[    8.143581] BUG: kernel NULL pointer dereference, address: 00000000000002b8\n[    8.156982] #PF: supervisor write access in kernel mode\n[    8.156984] #PF: error_code(0x0002) - not-present page\n[    8.156986] PGD 0 P4D 0\n...\n[    8.180668] RIP: 0010:mutex_lock+0x19/0x30\n[    8.188624] Call Trace:\n[    8.188629]  ? __die_body.cold+0x1a/0x1f\n[    8.195260]  ? page_fault_oops+0x15c/0x290\n[    8.209183]  ? __irq_resolve_mapping+0x47/0x80\n[    8.209187]  ? exc_page_fault+0x64/0x140\n[    8.209190]  ? asm_exc_page_fault+0x22/0x30\n[    8.209196]  ? mutex_lock+0x19/0x30\n[    8.223116]  uart_add_one_port+0x60/0x440\n[    8.223122]  ? proc_tty_register_driver+0x43/0x50\n[    8.223126]  ? tty_register_driver+0x1ca/0x1e0\n[    8.246250]  ulite_probe+0x357/0x4b0 [uartlite]\n\nTo prevent it, move uart driver registration in to init function. This\nwill ensure that uart_driver is always registered when probe function\nis called.","modified":"2026-04-16T04:39:17.341461447Z","published":"2025-07-09T10:42:37.410Z","related":["SUSE-SU-2026:20555-1","SUSE-SU-2026:20599-1","SUSE-SU-2026:20615-1","openSUSE-SU-2026:20287-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38262.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/5015eed450005bab6e5cb6810f7a62eab0434fc4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/685d29f2c5057b32c7b1b46f2a7d303b926c8f72"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6bd697b5fc39fd24e2aa418c7b7d14469f550a93"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6db06aaea07bb7c8e33a425cf7b98bf29ee6056e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8e958d10dd0ce5ae674cce460db5c9ca3f25243b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9c905fdbba68a6d73d39a6b7de9b9f0d6c46df87"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f5e4229d94792b40e750f30c92bcf7a3107c72ef"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38262.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38262"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"238b8721a554a33a451a3f13bdb5be8fe5cfc927"},{"fixed":"5015eed450005bab6e5cb6810f7a62eab0434fc4"},{"fixed":"9c905fdbba68a6d73d39a6b7de9b9f0d6c46df87"},{"fixed":"6db06aaea07bb7c8e33a425cf7b98bf29ee6056e"},{"fixed":"8e958d10dd0ce5ae674cce460db5c9ca3f25243b"},{"fixed":"685d29f2c5057b32c7b1b46f2a7d303b926c8f72"},{"fixed":"f5e4229d94792b40e750f30c92bcf7a3107c72ef"},{"fixed":"6bd697b5fc39fd24e2aa418c7b7d14469f550a93"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38262.json"}}],"schema_version":"1.7.5"}