VulnerabilityPublished 10 Jul 2025Updated 5 Nov 2026

CVE-2025-38265: Linux kernel · serial: jsm: fix NPE during jsm_uart_port_init

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in e3975aa899c0a3bbc10d035e699b142cd1373a71 : update Linux kernel when convenient.

Data as of 5 Nov 2026, 21:19 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch

Available – fixed in e3975aa899c0a3bbc10d035e699b142cd1373a71, abaecb2a4ad021c2f2426e9b2a9c020aef57aca9, a14c0d2eb3f0b1836fdec22908b87ecffd2ac844 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 84a9582fd203063cd4d301204971ff2cd8327f1a, < e3975aa899c0a3bbc10d035e699b142cd1373a71	Fixed in e3975aa899c0a3bbc10d035e699b142cd1373a71
LinuxLinux	Affected ≥ 84a9582fd203063cd4d301204971ff2cd8327f1a, < abaecb2a4ad021c2f2426e9b2a9c020aef57aca9	Fixed in abaecb2a4ad021c2f2426e9b2a9c020aef57aca9
LinuxLinux	Affected ≥ 84a9582fd203063cd4d301204971ff2cd8327f1a, < a14c0d2eb3f0b1836fdec22908b87ecffd2ac844	Fixed in a14c0d2eb3f0b1836fdec22908b87ecffd2ac844
LinuxLinux	Affected ≥ 84a9582fd203063cd4d301204971ff2cd8327f1a, < 985961dd2688a527a4847300d41beaad475ab7af	Fixed in 985961dd2688a527a4847300d41beaad475ab7af
LinuxLinux	Affected ≥ 84a9582fd203063cd4d301204971ff2cd8327f1a, < 3258d7ff8ebfa451426662b23e8f2b51b129afe1	Fixed in 3258d7ff8ebfa451426662b23e8f2b51b129afe1
LinuxLinux	Affected =6.5	Fixed in–

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.

References

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