In the Linux kernel, the following vulnerability has been resolved:
s390/checksum: Fix csum_partial() without vector facility
Currently csum_partial() calls csum_copy() with copy=false and dst=NULL. On machines without the vector facility, csum_copy() falls back to cksm(dst, ...), causing the checksum to be calculated from address zero instead of the source buffer.
The VX implementation already checksums data loaded from src. Make the fallback do the same by passing src to cksm().
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linuxUpgrade linux-6.12 | Aug 11, 2026 | Aug 11, 2026 |
| Redhat_linux | — | No solution exists | Aug 17, 2026 | Aug 10, 2026 |
| Ubuntu | — | Upgrade linux-image-ibmUpgrade linux-image-realtime-hwe-26.04Upgrade linux-image-7.0.0-1015-ibmUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-oracle-64k-7.0Upgrade linux-image-oracle-7.0Upgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-virtualUpgrade linux-image-7.0.0-1008-gkeUpgrade linux-image-azure-fde-7.0Upgrade linux-image-7.0.0-1017-azureUpgrade linux-image-ibm-7.0Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-azure-fde-lts-26.04Upgrade linux-image-azure-lts-26.04Upgrade linux-image-gkeUpgrade linux-image-oracleUpgrade linux-image-7.0.0-38-generic-64kUpgrade linux-image-oem-7.0Upgrade linux-image-aws-64kUpgrade linux-image-virtual-hwe-26.04Upgrade linux-image-gcpUpgrade linux-image-azure-7.0Upgrade linux-image-7.0.0-1014-aws-64kUpgrade linux-image-generic-64k-7.0Upgrade linux-image-7.0.0-1015-oemUpgrade linux-image-7.0.0-38-genericUpgrade linux-image-realtime-64k-7.0Upgrade linux-image-gcp-7.0Upgrade linux-image-gke-hwe-26.04Upgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-oracle-64kUpgrade linux-image-virtual-7.0Upgrade linux-image-7.0.0-1014-gcpUpgrade linux-image-7.0.0-1008-gke-64kUpgrade linux-image-awsUpgrade linux-image-generic-7.0Upgrade linux-image-7.0.0-1016-azure-fdeUpgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-oem-26.04aUpgrade linux-image-oem-26.04Upgrade linux-image-genericUpgrade linux-image-7.0.0-1014-awsUpgrade linux-image-7.0.0-1013-oracleUpgrade linux-image-aws-7.0Upgrade linux-image-7.0.0-38-realtimeUpgrade linux-image-7.0.0-1014-gcp-64kUpgrade linux-image-realtime-7.0Upgrade linux-image-aws-64k-7.0Upgrade linux-image-gcp-64k-7.0Upgrade linux-image-realtime-64kUpgrade linux-image-gke-64kUpgrade linux-image-azure-fdeUpgrade linux-image-azureUpgrade linux-image-realtimeUpgrade linux-image-gke-64k-7.0Upgrade linux-image-7.0.0-38-realtime-64kUpgrade linux-image-7.0.0-1013-oracle-64kUpgrade linux-image-generic-64kUpgrade linux-image-gke-7.0Upgrade linux-image-generic-hwe-26.04Upgrade linux-image-gcp-64k | Oct 7, 2026 | Oct 6, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 17, 2026 | Aug 10, 2026 |
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