Vulnerability in Kernel (CVE-2025-38265)

Summary

Vulnerability in Kernel (CVE-2025-38265). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 6.6.94, 6.12.33, 6.14.11, 6.15.2 or later.

Original description

The description as published by the source.

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:

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.

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2025-38265 has been found in Kernel.
Risk of unauthorized operations or information disclosure.
What to do: upgrade Kernel to 6.6.94, 6.12.33, 6.14.11, 6.15.2 or later.
If unsure, ask your IT team or search "Kernel CVE-2025-38265" on the vendor's site.

CVE-2025-38265 (Kernel)
Patched: 6.6.94, 6.12.33, 6.14.11, 6.15.2 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (unclassified) exists in Kernel.

📍 Affected scope

Check the vendor advisory for the affected versions of Kernel.

🔥 Severity

Severity: ?. Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 6.6.94, 6.12.33, 6.14.11, 6.15.2.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'Kernel' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposure identify
```
grep -r 'Kernel' . | grep -v node_modules
```
リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で Kernel を grep し、稼働しているサービス・バージョンを把握する。
2
Apply patch patch
```
Upgrade Kernel to 6.6.94, 6.12.33, 6.14.11, 6.15.2
```
ステージング環境で 6.6.94, 6.12.33, 6.14.11, 6.15.2 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
3
Post-deployment verification verify
```
Confirm patched version is live in production
```
パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

Linux Kernel

[{"type":"ECOSYSTEM","events":[{"introduced":"6.5.0"},{"fixed":"6.6.94"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.33"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.14.11"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.15.0"},{"fixed":"6.15.2"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

BellSoft Alpaquita BELL-CVE-2025-38265 linux-lts Fixed in: 6.12.41-r0
Debian DEBIAN-CVE-2025-38265 linux Fixed in: 6.12.33-1
Ubuntu UBUNTU-CVE-2025-38265 linux-hwe-edge