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CVE-2025-38123— net: wwan: t7xx: Fix napi rx poll issue

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于t7xx wwan驱动在napi轮询中使用无效网络设备，可能导致空指针取消引用。

CVSS 9.8 · Critical EPSS 0.46% · P39

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 5545b7b9f294de7f95ec6a7cb1de0db52296001c< cc89f457d9133a558d4e8ef26dc20843c2d12073 affected
5545b7b9f294de7f95ec6a7cb1de0db52296001c< e2df04e69c3f10b412f54be036dd0ed3b14756cf affected
5545b7b9f294de7f95ec6a7cb1de0db52296001c< 66542e9430c625f878a5b5dc0fe41e3458d614bf affected
5545b7b9f294de7f95ec6a7cb1de0db52296001c< 905fe0845bb27e4eed2ca27ea06e6c4847f1b2b1 affected
6.2 affected
< 6.2 unaffected
6.6.94≤ 6.6.* unaffected
6.12.34≤ 6.12.* unaffected
… +2 more rows
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I. Basic Information for CVE-2025-38123

Vulnerability Information
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Vulnerability Title
net: wwan: t7xx: Fix napi rx poll issue
Source: CVE Program / CVE List V5
Vulnerability 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>
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于t7xx wwan驱动在napi轮询中使用无效网络设备，可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 5545b7b9f294de7f95ec6a7cb1de0db52296001c ~ cc89f457d9133a558d4e8ef26dc20843c2d12073 -
Linux Linux 6.2 -

II. Public POCs for CVE-2025-38123

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III. Intelligence Information for CVE-2025-38123

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Same Patch Batch · Linux · 2025-07-03 · 78 CVEs total

CVE-2025-38139 9.8 CRITICAL netfs: Fix oops in write-retry from mis-resetting the subreq iterator
CVE-2025-38120 9.4 CRITICAL netfilter: nf_set_pipapo_avx2: fix initial map fill
CVE-2025-38146 9.4 CRITICAL net: openvswitch: Fix the dead loop of MPLS parse
CVE-2025-38141 7.8 HIGH dm: fix dm_blk_report_zones
CVE-2025-38168 7.8 HIGH perf: arm-ni: Unregister PMUs on probe failure
CVE-2025-38162 7.8 HIGH netfilter: nft_set_pipapo: prevent overflow in lookup table allocation
CVE-2025-38154 7.8 HIGH bpf, sockmap: Avoid using sk_socket after free when sending
CVE-2025-38106 7.8 HIGH io_uring: fix use-after-free of sq->thread in __io_uring_show_fdinfo()
CVE-2025-38150 7.8 HIGH af_packet: move notifier's packet_dev_mc out of rcu critical section
CVE-2025-38108 7.8 HIGH net_sched: red: fix a race in __red_change()
CVE-2025-38110 7.8 HIGH net/mdiobus: Fix potential out-of-bounds clause 45 read/write access
CVE-2025-38111 7.8 HIGH net/mdiobus: Fix potential out-of-bounds read/write access
CVE-2025-38107 7.8 HIGH net_sched: ets: fix a race in ets_qdisc_change()
CVE-2025-38116 7.8 HIGH wifi: ath12k: fix uaf in ath12k_core_init()
CVE-2025-38115 7.8 HIGH net_sched: sch_sfq: fix a potential crash on gso_skb handling
CVE-2025-38117 7.8 HIGH Bluetooth: MGMT: Protect mgmt_pending list with its own lock
CVE-2025-38118 7.8 HIGH Bluetooth: MGMT: Fix UAF on mgmt_remove_adv_monitor_complete
CVE-2025-38133 7.8 HIGH iio: adc: ad4851: fix ad4858 chan pointer handling
CVE-2025-38129 7.8 HIGH page_pool: Fix use-after-free in page_pool_recycle_in_ring
CVE-2025-38127 7.8 HIGH ice: fix Tx scheduler error handling in XDP callback

Showing top 20 of 78 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38123

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