In the Linux kernel, the following vulnerability has been resolved:
net: stmmac: Correctly handle Rx checksum offload errors
The stmmac_rx function would previously set skb->ip_summed to CHECKSUM_UNNECESSARY if hardware checksum offload (CoE) was enabled and the packet was of a known IP ethertype.
However, this logic failed to check if the hardware had actually reported a checksum error. The hardware status, indicating a header or payload checksum failure, was being ignored at this stage. This could cause corrupt packets to be passed up the network stack as valid.
This patch corrects the logic by checking the `csum_none` status flag, which is set when the hardware reports a checksum error. If this flag is set, skb->ip_summed is now correctly set to CHECKSUM_NONE, ensuring the kernel's network stack will perform its own validation and properly handle the corrupt packet.
CVSS Details
- CVSS 3.1 Base Score: 8.2
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1047-oracleUpgrade linux-image-aws-lts-24.04Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1049-nvidia-lowlatency-64kUpgrade linux-image-awsUpgrade linux-image-aws-6.17Upgrade linux-image-realtime-6.17Upgrade linux-image-6.17.0-1007-gcp-64kUpgrade linux-image-6.17.0-1007-oracle-64kUpgrade linux-image-azure-6.8Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-oracle-6.8Upgrade linux-image-6.8.0-1050-raspiUpgrade linux-image-aws-64kUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-nvidia-6.8Upgrade linux-image-6.8.0-1049-nvidia-lowlatencyUpgrade linux-image-xilinx-6.8Upgrade linux-image-lowlatency-6.8Upgrade linux-image-gcp-6.8Upgrade linux-image-generic-64k-6.17Upgrade linux-image-oracle-64kUpgrade linux-image-6.8.0-1029-xilinxUpgrade linux-image-oracle-6.17Upgrade linux-image-6.8.0-106-fipsUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.17.0-1007-awsUpgrade linux-image-kvmUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-virtualUpgrade linux-image-gcp-64kUpgrade linux-image-gcp-64k-6.17Upgrade linux-image-aws-fips-6.8Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-aws-fipsUpgrade linux-image-gkeUpgrade linux-image-6.8.0-1052-gcpUpgrade linux-image-realtimeUpgrade linux-image-6.8.0-106-generic-64kUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-oem-6.17Upgrade linux-image-oracleUpgrade linux-image-6.8.0-1050-aws-64kUpgrade linux-image-6.8.0-1050-aws-fipsUpgrade linux-image-oracle-64k-6.17Upgrade linux-image-6.8.0-1052-gcp-fipsUpgrade linux-image-6.8.0-106-lowlatencyUpgrade linux-image-realtime-6.8.1Upgrade linux-image-6.8.0-106-lowlatency-64kUpgrade linux-image-6.8.0-1049-nvidia-64kUpgrade linux-image-nvidia-64kUpgrade linux-image-intel-iotgUpgrade linux-image-raspi-6.8Upgrade linux-image-aws-64k-6.17Upgrade linux-image-oem-22.04dUpgrade linux-image-6.17.0-14-genericUpgrade linux-image-6.17.0-1008-raspiUpgrade linux-image-gcp-6.17Upgrade linux-image-gke-64k-6.8Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-6.8.0-1049-nvidiaUpgrade linux-image-6.8.0-1051-azureUpgrade linux-image-raspiUpgrade linux-image-6.17.0-1007-gcpUpgrade linux-image-gcpUpgrade linux-image-azure-fips-6.8Upgrade linux-image-oem-22.04aUpgrade linux-image-6.17.0-14-generic-64kUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-realtime-hwe-22.04Upgrade linux-image-oem-22.04cUpgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-106-genericUpgrade linux-image-fipsUpgrade linux-image-raspi-realtimeUpgrade linux-image-gkeop-6.8Upgrade linux-image-6.8.0-2040-raspi-realtimeUpgrade linux-image-6.8.0-1050-awsUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-gke-64kUpgrade linux-image-generic-64kUpgrade linux-image-6.8.0-1049-ibmUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-6.8.1-1045-realtimeUpgrade linux-image-oem-22.04Upgrade linux-image-gcp-fipsUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-aws-64k-6.8Upgrade linux-image-generic-lpaeUpgrade linux-image-azure-fipsUpgrade linux-image-azureUpgrade linux-image-6.8.0-1035-gkeopUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-azure-lts-24.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-nvidiaUpgrade linux-image-virtual-6.8Upgrade linux-image-6.8.0-1052-azure-fipsUpgrade linux-image-6.8.0-1052-gcp-64kUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-aws-6.8Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-1047-oracle-64kUpgrade linux-image-6.17.0-1006-realtimeUpgrade linux-image-6.17.0-1007-aws-64kUpgrade linux-image-lowlatency-64kUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-raspi-6.17Upgrade linux-image-ibm-6.8Upgrade linux-image-ibmUpgrade linux-image-6.8.0-1048-gke-64kUpgrade linux-image-6.8.0-1048-gkeUpgrade linux-image-6.17.0-1007-oracleUpgrade linux-image-xilinxUpgrade linux-image-oem-22.04bUpgrade linux-image-gke-6.8Upgrade linux-image-virtual-6.17Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.17.0-1008-azureUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-generic-6.8Upgrade linux-image-lowlatencyUpgrade linux-image-gkeopUpgrade linux-image-genericUpgrade linux-image-fips-6.8Upgrade linux-image-6.17.0-1011-oemUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-generic-6.17Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-generic-64k-6.8Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-azure-6.17 | Feb 13, 2026 | Feb 12, 2026 |
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