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NVD / CVE Program· CNA Linux

CVE-2025-38265: serial: jsm: fix NPE during jsm_uart_port_init

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.18% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 3258d7ff8ebfa451426662b23e8f2b51b129afe1, 985961dd2688a527a4847300d41beaad475ab7af, a14c0d2eb3f0b1836fdec22908b87ecffd2ac844; azl3 kernel 6.6.92.2-2 on Azure Linux 3.0 6.6.96.1-1.

Low priority for now. Upgrade to Linux Linux 3258d7ff8ebfa451426662b23e8f2b51b129afe1, 985961dd2688a527a4847300d41beaad475ab7af, a14c0d2eb3f0b1836fdec22908b87ecffd2ac844; azl3 kernel 6.6.92.2-2 on Azure Linux 3.0 6.6.96.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jul 10, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 8th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel6.5 and later · before 6.6.94
  • linux linux kernel6.7 and later · before 6.12.33
  • linux linux kernel6.13 and later · before 6.14.11
  • linux linux kernel6.15 and later · before 6.15.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 6.5affected
    • 84a9582fd203063cd4d301204971ff2cd8327f1a and later · before 3258d7ff8ebfa451426662b23e8f2b51b129afe1affected · git
    • 84a9582fd203063cd4d301204971ff2cd8327f1a and later · before 985961dd2688a527a4847300d41beaad475ab7afaffected · git
    • 84a9582fd203063cd4d301204971ff2cd8327f1a and later · before a14c0d2eb3f0b1836fdec22908b87ecffd2ac844affected · git
    • 84a9582fd203063cd4d301204971ff2cd8327f1a and later · before abaecb2a4ad021c2f2426e9b2a9c020aef57aca9affected · git
    • 84a9582fd203063cd4d301204971ff2cd8327f1a and later · before e3975aa899c0a3bbc10d035e699b142cd1373a71affected · git
    • before 6.5not affected · semver
    • 6.6.94 and later · up to and including 6.6.*not affected · semver
    • 6.12.33 and later · up to and including 6.12.*not affected · semver
    • 6.14.11 and later · up to and including 6.14.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:13linuxbefore 6.12.33-16.12.33-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2025-38262Jul 9, 2025 · tty: serial: uartlite: register uart driver in init
    22Monitor
  • ← EarlierCVE-2025-38264Jul 9, 2025 · nvme-tcp: sanitize request list handling
    22Monitor
  • Later →CVE-2025-38266Jul 10, 2025 · pinctrl: mediatek: eint: Fix invalid pointer dereference for v1 platforms
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux3258d7ff8ebfa451426662b23e8f2b51b129afe1Vendor (CNA)
Linux Linux985961dd2688a527a4847300d41beaad475ab7afVendor (CNA)
Linux Linuxa14c0d2eb3f0b1836fdec22908b87ecffd2ac844Vendor (CNA)
Linux Linuxabaecb2a4ad021c2f2426e9b2a9c020aef57aca9Vendor (CNA)
Linux Linuxe3975aa899c0a3bbc10d035e699b142cd1373a71Vendor (CNA)
azl3 kernel 6.6.92.2-2 on Azure Linux 3.06.6.96.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.12.33-1 · Debian:13Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records