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>
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Suse | — | Upgrade kernel-docsUpgrade kselftests-kmp-rtUpgrade kernel-rt-develUpgrade dtb-sprdUpgrade kernel-defaultUpgrade kernel-rt-livepatchUpgrade dtb-qcomUpgrade kernel-default-base-rebuildUpgrade kernel-default-extraUpgrade kernel-macrosUpgrade reiserfs-kmp-azureUpgrade kernel-rtUpgrade kernel-develUpgrade dtb-amlogicUpgrade dtb-mediatekUpgrade dtb-xilinxUpgrade dlm-kmp-azureUpgrade dtb-rockchipUpgrade kernel-azure-develUpgrade kernel-rt_debug-vdsoUpgrade kernel-64kb-develUpgrade kernel-64kb-extraUpgrade kernel-default-optionalUpgrade cluster-md-kmp-defaultUpgrade kernel-default-vdsoUpgrade dtb-armUpgrade dlm-kmp-rtUpgrade ocfs2-kmp-azureUpgrade kernel-symsUpgrade kernel-syms-azureUpgrade kernel-devel-rtUpgrade dlm-kmp-defaultUpgrade dtb-nvidiaUpgrade kernel-obs-qaUpgrade cluster-md-kmp-rtUpgrade ocfs2-kmp-rtUpgrade kselftests-kmp-defaultUpgrade kernel-rt-extraUpgrade dtb-apmUpgrade kernel-default-baseUpgrade cluster-md-kmp-64kbUpgrade dtb-lgUpgrade kernel-rt_debug-develUpgrade kernel-rt-vdsoUpgrade kernel-kvmsmall-vdsoUpgrade kernel-kvmsmall-develUpgrade kernel-default-livepatchUpgrade kernel-azure-extraUpgrade dtb-amdUpgrade reiserfs-kmp-rtUpgrade dtb-caviumUpgrade dtb-amazonUpgrade dtb-socionextUpgrade dtb-exynosUpgrade kernel-syms-rtUpgrade reiserfs-kmp-64kbUpgrade kernel-source-azureUpgrade kernel-devel-azureUpgrade dtb-appleUpgrade dlm-kmp-64kbUpgrade kernel-64kb-optionalUpgrade cluster-md-kmp-azureUpgrade kernel-rt-optionalUpgrade kernel-rt-livepatch-develUpgrade kernel-kvmsmallUpgrade kernel-64kbUpgrade gfs2-kmp-rtUpgrade gfs2-kmp-azureUpgrade dtb-renesasUpgrade kernel-rt_debugUpgrade dtb-broadcomUpgrade dtb-alteraUpgrade kernel-debugUpgrade kernel-azure-optionalUpgrade kernel-azureUpgrade gfs2-kmp-defaultUpgrade dtb-marvellUpgrade dtb-freescaleUpgrade dtb-allwinnerUpgrade ocfs2-kmp-64kbUpgrade kernel-docs-htmlUpgrade kernel-azure-vdsoUpgrade kernel-default-livepatch-develUpgrade kernel-debug-vdsoUpgrade kernel-debug-develUpgrade gfs2-kmp-64kbUpgrade kernel-source-vanillaUpgrade kernel-source-rtUpgrade kernel-sourceUpgrade dtb-hisiliconUpgrade reiserfs-kmp-defaultUpgrade ocfs2-kmp-defaultUpgrade kselftests-kmp-64kbUpgrade kernel-obs-buildUpgrade kernel-default-develUpgrade kernel-zfcpdumpUpgrade kselftests-kmp-azure | Dec 5, 2025 | Aug 18, 2025 |
| Ubuntu | — | Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.14.0-1016-gcp-64kUpgrade linux-image-oem-22.04cUpgrade linux-image-aws-6.8Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.8.0-1051-azureUpgrade linux-image-lowlatency-64kUpgrade linux-image-ibm-6.8Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.8.0-100-genericUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-oem-24.04bUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-azure-6.14Upgrade linux-image-nvidiaUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-raspi-6.14Upgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-1046-azureUpgrade linux-image-lowlatencyUpgrade linux-image-6.14.0-32-generic-64kUpgrade linux-image-gkeop-6.8Upgrade linux-image-oracle-64k-6.14Upgrade linux-image-azure-fips-6.8Upgrade linux-image-6.14.0-1016-gcpUpgrade linux-image-xilinxUpgrade linux-image-6.14.0-1012-oemUpgrade linux-image-oem-22.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-oem-6.14Upgrade linux-image-generic-6.8Upgrade linux-image-intel-iotgUpgrade linux-image-fipsUpgrade linux-image-fips-6.8Upgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-genericUpgrade linux-image-generic-64kUpgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-raspi-realtimeUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-6.8.0-100-fipsUpgrade linux-image-virtualUpgrade linux-image-aws-fipsUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-oem-22.04aUpgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-gcp-fipsUpgrade linux-image-ibm-classicUpgrade linux-image-gkeopUpgrade linux-image-6.8.0-1046-awsUpgrade linux-image-oracle-6.14Upgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-lowlatency-6.8Upgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-azure-lts-24.04Upgrade linux-image-gke-64kUpgrade linux-image-ibmUpgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-xilinx-6.8Upgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-gke-64k-6.8Upgrade linux-image-oem-24.04Upgrade linux-image-awsUpgrade linux-image-oem-22.04bUpgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-raspiUpgrade linux-image-oem-22.04dUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-realtime-6.8.1Upgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-realtimeUpgrade linux-image-generic-6.14Upgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-gcp-64k-6.14Upgrade linux-image-aws-64k-6.14Upgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-generic-64k-6.14Upgrade linux-image-gcpUpgrade linux-image-6.14.0-1013-oracleUpgrade linux-image-6.14.0-1014-raspiUpgrade linux-image-aws-fips-6.8Upgrade linux-image-oracle-64kUpgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-oracleUpgrade linux-image-azure-fipsUpgrade linux-image-nvidia-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-azureUpgrade linux-image-oem-24.04cUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-virtual-6.14Upgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-gcp-6.14Upgrade linux-image-generic-64k-6.8Upgrade linux-image-6.14.0-32-genericUpgrade linux-image-6.14.0-1013-aws-64kUpgrade linux-image-aws-lts-24.04Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-raspi-6.8Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-azure-6.8Upgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-aws-6.14Upgrade linux-image-kvmUpgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-6.14.0-1012-azureUpgrade linux-image-virtual-6.8Upgrade linux-image-gcp-64kUpgrade linux-image-oem-24.04aUpgrade linux-image-oracle-6.8Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-gcp-6.8Upgrade linux-image-6.14.0-1013-awsUpgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-6.14.0-1012-realtimeUpgrade linux-image-6.14.0-1013-oracle-64kUpgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-gke-6.8Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-aws-64k-6.8Upgrade linux-image-gkeUpgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-realtime-6.14Upgrade linux-image-nvidia-6.8Upgrade linux-image-aws-64k | Jul 7, 2025 | Jul 3, 2025 |
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