CVE-2025-38265

serial: jsm: fix NPE during jsm_uart_port_init

MEDIUM

5.5

CVSS Score

Published: July 10, 2025 at 07:37 AM UTC

Updated: June 17, 2026 at 09:16 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: serial: jsm: fix NPE during jsm_uart_port_init No device was set which caused serial_base_ctrl_add to crash. BUG: kernel NULL pointer dereference, address: 0000000000000050 Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 16 UID: 0 PID: 368 Comm: (udev-worker) Not tainted 6.12.25-amd64 #1 Debian 6.12.25-1 RIP: 0010:serial_base_ctrl_add+0x96/0x120 Call Trace: <TASK> serial_core_register_port+0x1a0/0x580 ? __setup_irq+0x39c/0x660 ? __kmalloc_cache_noprof+0x111/0x310 jsm_uart_port_init+0xe8/0x180 [jsm] jsm_probe_one+0x1f4/0x410 [jsm] local_pci_probe+0x42/0x90 pci_device_probe+0x22f/0x270 really_probe+0xdb/0x340 ? pm_runtime_barrier+0x54/0x90 ? __pfx___driver_attach+0x10/0x10 __driver_probe_device+0x78/0x110 driver_probe_device+0x1f/0xa0 __driver_attach+0xba/0x1c0 bus_for_each_dev+0x8c/0xe0 bus_add_driver+0x112/0x1f0 driver_register+0x72/0xd0 jsm_init_module+0x36/0xff0 [jsm] ? __pfx_jsm_init_module+0x10/0x10 [jsm] do_one_initcall+0x58/0x310 do_init_module+0x60/0x230 Tested with Digi Neo PCIe 8 port card.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

6.13 ≤ v < 6.14.116.15 ≤ v < 6.15.26.5 ≤ v < 6.12.336.5 ≤ v < 6.14.116.5 ≤ v < 6.15.26.5 ≤ v < 6.166.5 ≤ v < 6.6.946.7 ≤ v < 6.12.336.584a9582fd203063cd4d301204971ff2cd8327f1a

Vendor states this is fixed in 3258d7ff8ebfa451426662b23e8f2b51b129afe1 (fixed)

Vendor states this is fixed in 985961dd2688a527a4847300d41beaad475ab7af (fixed)

Vendor states this is fixed in a14c0d2eb3f0b1836fdec22908b87ecffd2ac844 (fixed)

Vendor states this is fixed in abaecb2a4ad021c2f2426e9b2a9c020aef57aca9 (fixed)

Vendor states this is fixed in e3975aa899c0a3bbc10d035e699b142cd1373a71 (fixed)

Vendor states this is fixed in 6.12.33 (unaffected)

Vendor states this is fixed in 6.14.11 (unaffected)

Vendor states this is fixed in 6.15.2 (unaffected)

Vendor states this is fixed in 6.16 (unaffected)

Vendor states this is fixed in 6.5 (unaffected)

Vendor states this is fixed in 6.6.94 (unaffected)