{"id":"CVE-2025-38265","title":"serial: jsm: fix NPE during jsm_uart_port_init","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: jsm: fix NPE during jsm_uart_port_init\n\nNo device was set which caused serial_base_ctrl_add to crash.\n\n BUG: kernel NULL pointer dereference, address: 000000000…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 84a9582fd203063cd4d301204971ff2cd8327f1a < 3258d7ff8ebfa451426662b23e8f2b51b129afe1","Linux >= 84a9582fd203063cd4d301204971ff2cd8327f1a < 985961dd2688a527a4847300d41beaad475ab7af","Linux >= 84a9582fd203063cd4d301204971ff2cd8327f1a < a14c0d2eb3f0b1836fdec22908b87ecffd2ac844","Linux >= 84a9582fd203063cd4d301204971ff2cd8327f1a < abaecb2a4ad021c2f2426e9b2a9c020aef57aca9","Linux >= 84a9582fd203063cd4d301204971ff2cd8327f1a < e3975aa899c0a3bbc10d035e699b142cd1373a71","Linux 6.5"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:52:37.746503Z"},"published":"2025-07-10","updated":"2026-11-05","sourceUpdated":"2026-11-05T21:02:29.652Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-38265","references":[{"url":"https://git.kernel.org/stable/c/3258d7ff8ebfa451426662b23e8f2b51b129afe1"},{"url":"https://git.kernel.org/stable/c/985961dd2688a527a4847300d41beaad475ab7af"},{"url":"https://git.kernel.org/stable/c/a14c0d2eb3f0b1836fdec22908b87ecffd2ac844"},{"url":"https://git.kernel.org/stable/c/abaecb2a4ad021c2f2426e9b2a9c020aef57aca9"},{"url":"https://git.kernel.org/stable/c/e3975aa899c0a3bbc10d035e699b142cd1373a71"}],"tags":["cve.org"],"epss":0.00189,"epssPercentile":0.08527,"ingestedAt":"2026-11-05T22:38:31.944Z","slug":"CVE-2025-38265","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nserial: jsm: fix NPE during jsm_uart_port_init\n\nNo device was set which caused serial_base_ctrl_add to crash.\n\n BUG: kernel NULL pointer dereference, address: 0000000000000050\n Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI\n CPU: 16 UID: 0 PID: 368 Comm: (udev-worker) Not tainted 6.12.25-amd64 #1  Debian 6.12.25-1\n RIP: 0010:serial_base_ctrl_add+0x96/0x120\n Call Trace:\n  <TASK>\n  serial_core_register_port+0x1a0/0x580\n  ? __setup_irq+0x39c/0x660\n  ? __kmalloc_cache_noprof+0x111/0x310\n  jsm_uart_port_init+0xe8/0x180 [jsm]\n  jsm_probe_one+0x1f4/0x410 [jsm]\n  local_pci_probe+0x42/0x90\n  pci_device_probe+0x22f/0x270\n  really_probe+0xdb/0x340\n  ? pm_runtime_barrier+0x54/0x90\n  ? __pfx___driver_attach+0x10/0x10\n  __driver_probe_device+0x78/0x110\n  driver_probe_device+0x1f/0xa0\n  __driver_attach+0xba/0x1c0\n  bus_for_each_dev+0x8c/0xe0\n  bus_add_driver+0x112/0x1f0\n  driver_register+0x72/0xd0\n  jsm_init_module+0x36/0xff0 [jsm]\n  ? __pfx_jsm_init_module+0x10/0x10 [jsm]\n  do_one_initcall+0x58/0x310\n  do_init_module+0x60/0x230\n\nTested with Digi Neo PCIe 8 port card.\n\n## Affected\n\n- `Linux >= 84a9582fd203063cd4d301204971ff2cd8327f1a < 3258d7ff8ebfa451426662b23e8f2b51b129afe1`\n- `Linux >= 84a9582fd203063cd4d301204971ff2cd8327f1a < 985961dd2688a527a4847300d41beaad475ab7af`\n- `Linux >= 84a9582fd203063cd4d301204971ff2cd8327f1a < a14c0d2eb3f0b1836fdec22908b87ecffd2ac844`\n- `Linux >= 84a9582fd203063cd4d301204971ff2cd8327f1a < abaecb2a4ad021c2f2426e9b2a9c020aef57aca9`\n- `Linux >= 84a9582fd203063cd4d301204971ff2cd8327f1a < e3975aa899c0a3bbc10d035e699b142cd1373a71`\n- `Linux 6.5`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}