{"id":"CVE-2025-38262","revision":"57cdf36d6a294ba98fa59489c5123976","records":[{"revision":"57cdf36d6a294ba98fa59489c5123976","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-38262","aliases":[],"title":"tty: serial: uartlite: register uart driver in init","description":"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.","state":0,"publishedAt":"2025-07-09T10:42:37.41+00:00","modifiedAt":"2026-10-15T21:52:13.087+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/tty/serial/uartlite.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"238b8721a554a33a451a3f13bdb5be8fe5cfc927\",\n                            \"lessThan\": \"5015eed450005bab6e5cb6810f7a62eab0434fc4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"238b8721a554a33a451a3f13bdb5be8fe5cfc927\",\n                            \"lessThan\": \"9c905fdbba68a6d73d39a6b7de9b9f0d6c46df87\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"238b8721a554a33a451a3f13bdb5be8fe5cfc927\",\n                            \"lessThan\": \"6db06aaea07bb7c8e33a425cf7b98bf29ee6056e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"238b8721a554a33a451a3f13bdb5be8fe5cfc927\",\n                            \"lessThan\": \"8e958d10dd0ce5ae674cce460db5c9ca3f25243b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"238b8721a554a33a451a3f13bdb5be8fe5cfc927\",\n                            \"lessThan\": \"685d29f2c5057b32c7b1b46f2a7d303b926c8f72\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"238b8721a554a33a451a3f13bdb5be8fe5cfc927\",\n                            \"lessThan\": \"f5e4229d94792b40e750f30c92bcf7a3107c72ef\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"238b8721a554a33a451a3f13bdb5be8fe5cfc927\",\n                            \"lessThan\": \"6bd697b5fc39fd24e2aa418c7b7d14469f550a93\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/tty/serial/uartlite.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.20\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.20\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.4.296\",\n                            \"lessThanOrEqual\": \"5.4.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.187\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.143\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.96\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.36\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.15.5\",\n                            \"lessThanOrEqual\": \"6.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.16\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/5015eed450005bab6e5cb6810f7a62eab0434fc4","https://git.kernel.org/stable/c/9c905fdbba68a6d73d39a6b7de9b9f0d6c46df87","https://git.kernel.org/stable/c/6db06aaea07bb7c8e33a425cf7b98bf29ee6056e","https://git.kernel.org/stable/c/8e958d10dd0ce5ae674cce460db5c9ca3f25243b","https://git.kernel.org/stable/c/685d29f2c5057b32c7b1b46f2a7d303b926c8f72","https://git.kernel.org/stable/c/f5e4229d94792b40e750f30c92bcf7a3107c72ef","https://git.kernel.org/stable/c/6bd697b5fc39fd24e2aa418c7b7d14469f550a93"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-38262","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-38262","identifiers":["CVE-2025-38262"]},"retained":false,"historicalAffected":[]}],"coverage":[]}