{"id":"CVE-2025-38262","revision":null,"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":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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