CVE-2025-38123 Information

Jul 04, 2025 cve

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: ? __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

Reference

https://git.kernel.org/stable/c/66542e9430c625f878a5b5dc0fe41e3458d614bf https://git.kernel.org/stable/c/905fe0845bb27e4eed2ca27ea06e6c4847f1b2b1 https://git.kernel.org/stable/c/cc89f457d9133a558d4e8ef26dc20843c2d12073 https://git.kernel.org/stable/c/e2df04e69c3f10b412f54be036dd0ed3b14756cf

CNNVD-202507-210 (Published: 2025-07-03)

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