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CVE-2025-38123

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: net: wwan: t7xx: Fix napi rx poll issue When driver handles the napi rx polling requests, the netdev might have been released b…

Published Jul 3, 2025CWE-476EPSS 0.46%

Overview

CVE-2025-38123 is a critical-severity vulnerability. It was published on July 3, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

net: wwan: t7xx: Fix napi rx poll issue

When driver handles the napi rx polling requests, the netdev might

have been released by the dellink logic triggered by the disconnect

operation on user plane. However, in the logic of processing skb in

polling, an invalid netdev is still being used, which causes a panic.

BUG: kernel NULL pointer dereference, address: 00000000000000f1

Oops: 0000 [#1] PREEMPT SMP NOPTI

RIP: 0010:dev_gro_receive+0x3a/0x620

[...]

Call Trace:

<IRQ>

? __die_body+0x68/0xb0

? page_fault_oops+0x379/0x3e0

? exc_page_fault+0x4f/0xa0

? asm_exc_page_fault+0x22/0x30

? __pfx_t7xx_ccmni_recv_skb+0x10/0x10 [mtk_t7xx (HASH:1400 7)]

? dev_gro_receive+0x3a/0x620

napi_gro_receive+0xad/0x170

t7xx_ccmni_recv_skb+0x48/0x70 [mtk_t7xx (HASH:1400 7)]

t7xx_dpmaif_napi_rx_poll+0x590/0x800 [mtk_t7xx (HASH:1400 7)]

net_rx_action+0x103/0x470

irq_exit_rcu+0x13a/0x310

sysvec_apic_timer_interrupt+0x56/0x90

</IRQ>

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/66542e9430c625f878a5b5dc0fe41e3458d614bfRefgit.kernel.org/stable/c/905fe0845bb27e4eed2ca27ea06e6c4847f1b2b1Refgit.kernel.org/stable/c/cc89f457d9133a558d4e8ef26dc20843c2d12073Refgit.kernel.org/stable/c/e2df04e69c3f10b412f54be036dd0ed3b14756cf

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38123?

CVE-2025-38123 is a critical-severity vulnerability. It was published on July 3, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-38123?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-38123?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-38123?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38123 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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