In the Linux kernel, the following vulnerability has been resolved:
netfilter: nft_inner: incorrect percpu area handling under softirq
Softirq can interrupt ongoing packet from process context that is walking over the percpu area that contains inner header offsets.
Disable bh and perform three checks before restoring the percpu inner header offsets to validate that the percpu area is valid for this skbuff:
1) If the NFT_PKTINFO_INNER_FULL flag is set on, then this skbuff has already been parsed before for inner header fetching to register.
2) Validate that the percpu area refers to this skbuff using the skbuff pointer as a cookie. If there is a cookie mismatch, then this skbuff needs to be parsed again.
3) Finally, validate if the percpu area refers to this tunnel type.
Only after these three checks the percpu area is restored to a on-stack copy and bh is enabled again.
After inner header fetching, the on-stack copy is stored back to the percpu area.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 27, 2026 | Jul 27, 2026 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Dec 27, 2024 |
| Ubuntu | — | Upgrade linux-image-6.11.0-1013-oracleUpgrade linux-image-6.8.0-58-generic-64kUpgrade linux-image-generic-64kUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-6.8.0-1027-azure-fdeUpgrade linux-image-6.8.0-1026-nvidia-lowlatencyUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-1028-gcp-64kUpgrade linux-image-raspiUpgrade linux-image-azure-fdeUpgrade linux-image-ibm-classicUpgrade linux-image-azure-lts-24.04Upgrade linux-image-oem-22.04dUpgrade linux-image-gkeopUpgrade linux-image-nvidia-6.8Upgrade linux-image-oem-22.04cUpgrade linux-image-nvidia-64kUpgrade linux-image-6.11.0-21-generic-64kUpgrade linux-image-6.8.0-1014-azure-nvidiaUpgrade linux-image-6.11.0-1011-gcpUpgrade linux-image-6.11.0-1013-oracle-64kUpgrade linux-image-genericUpgrade linux-image-ibmUpgrade linux-image-gcp-64kUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-6.11.0-1017-oemUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-nvidiaUpgrade linux-image-6.8.0-1024-ibmUpgrade linux-image-aws-lts-24.04Upgrade linux-image-6.11.0-1007-realtimeUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.8.0-58-genericUpgrade linux-image-azure-nvidiaUpgrade linux-image-6.8.1-1020-realtimeUpgrade linux-image-6.8.0-1023-gkeUpgrade linux-image-6.8.0-1028-raspiUpgrade linux-image-azureUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-6.8.0-1010-gkeopUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-6.11.0-1011-lowlatencyUpgrade linux-image-6.11.0-1012-azureUpgrade linux-image-lowlatencyUpgrade linux-image-6.8.0-1026-oemUpgrade linux-image-oem-22.04aUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-gcpUpgrade linux-image-6.8.0-1024-oracle-64kUpgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-6.8.0-1028-gcpUpgrade linux-image-6.11.0-1010-raspiUpgrade linux-image-awsUpgrade linux-image-6.8.0-1026-nvidia-lowlatency-64kUpgrade linux-image-kvmUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.8.0-1024-oracleUpgrade linux-image-virtualUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-6.11.0-1012-azure-fdeUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.8.0-2023-raspi-realtimeUpgrade linux-image-6.8.0-1026-nvidia-64kUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-oem-24.04bUpgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-6.11.0-21-genericUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-oem-22.04Upgrade linux-image-6.11.0-1011-awsUpgrade linux-image-6.8.0-1027-awsUpgrade linux-image-oracle-64kUpgrade linux-image-6.11.0-1011-lowlatency-64kUpgrade linux-image-oem-24.04Upgrade linux-image-raspi-realtimeUpgrade linux-image-6.8.0-58-lowlatency-64kUpgrade linux-image-6.8.0-1026-nvidiaUpgrade linux-image-oem-22.04bUpgrade linux-image-gkeUpgrade linux-image-6.8.0-58-lowlatencyUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-6.11.0-1011-gcp-64kUpgrade linux-image-oracleUpgrade linux-image-gkeop-6.8Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.8.0-1027-azureUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-oem-24.04aUpgrade linux-image-generic-lpaeUpgrade linux-image-realtime | Mar 28, 2025 | Dec 27, 2024 |
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