In the Linux kernel, the following vulnerability has been resolved:
ARM: 9475/1: entry: use byte load for KASAN VMAP stack shadow
Commit 44e9a3bb76e5 ("ARM: 9430/1: entry: Do a dummy read from VMAP shadow") added a dummy read from the KASAN VMAP stack shadow in __switch_to(). The read uses ldr, but the KASAN shadow address is byte-granular and is not guaranteed to be word aligned.
ARMv5 faults unaligned word loads. With CONFIG_KASAN_VMALLOC and CONFIG_VMAP_STACK enabled, ARM926/VersatilePB crashes in __switch_to() with an alignment exception before reaching init.
Use ldrb for the dummy shadow access. The code only needs to fault in the shadow mapping if the stack shadow is missing, so a byte load is sufficient and matches the granularity of KASAN shadow memory.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Jul 5, 2026 | Jul 5, 2026 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1070-gcp-64kUpgrade linux-image-ibm-7.0Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-aws-64kUpgrade linux-image-6.8.0-1063-oracleUpgrade linux-image-gcpUpgrade linux-image-ibmUpgrade linux-image-6.8.0-146-genericUpgrade linux-image-7.0.0-1013-oemUpgrade linux-image-generic-lpaeUpgrade linux-image-virtual-7.0Upgrade linux-image-6.8.0-1066-awsUpgrade linux-image-7.0.0-1019-raspiUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-azure-lts-24.04Upgrade linux-image-oem-26.04bUpgrade linux-image-7.0.0-31-realtime-64kUpgrade linux-image-gcp-7.0Upgrade linux-image-ibm-6.8Upgrade linux-image-6.8.0-1064-nvidia-lowlatencyUpgrade linux-image-6.8.0-1065-gkeUpgrade linux-image-6.8.0-1063-oracle-64kUpgrade linux-image-gkeop-6.8Upgrade linux-image-realtime-7.0Upgrade linux-image-7.0.0-1013-ibmUpgrade linux-image-virtualUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-gke-hwe-26.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-gkeUpgrade linux-image-generic-6.8Upgrade linux-image-7.0.0-1006-gkeUpgrade linux-image-aws-64k-7.0Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-raspi-realtimeUpgrade linux-image-6.8.0-1064-nvidia-lowlatency-64kUpgrade linux-image-nvidiaUpgrade linux-image-6.8.0-1065-gke-64kUpgrade linux-image-7.0.0-31-realtimeUpgrade linux-image-6.8.0-1070-azureUpgrade linux-image-6.8.0-1068-azure-fdeUpgrade linux-image-genericUpgrade linux-image-gcp-6.8Upgrade linux-image-oracle-64k-7.0Upgrade linux-image-oracleUpgrade linux-image-oracle-7.0Upgrade linux-image-lowlatencyUpgrade linux-image-lowlatency-6.8Upgrade linux-image-virtual-hwe-26.04Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-7.0.0-1011-oracleUpgrade linux-image-ibm-classicUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-gkeopUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-azure-lts-26.04Upgrade linux-image-fips-6.8Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-realtime-64k-7.0Upgrade linux-image-fipsUpgrade linux-image-6.8.0-1070-gcp-fipsUpgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-7.0.0-2018-nvidia-bos-64kUpgrade linux-image-lowlatency-64kUpgrade linux-image-6.8.0-1070-gcpUpgrade linux-image-azure-fips-6.8Upgrade linux-image-aws-fipsUpgrade linux-image-azure-6.8Upgrade linux-image-raspi-realtime-7.0Upgrade linux-image-oem-26.04Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-gke-7.0Upgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-nvidia-bosUpgrade linux-image-aws-fips-6.8Upgrade linux-image-aws-6.8Upgrade linux-image-7.0.0-1014-azureUpgrade linux-image-6.8.0-1066-ibmUpgrade linux-image-7.0.0-1006-gke-64kUpgrade linux-image-gke-6.8Upgrade linux-image-6.8.0-1066-aws-fipsUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-azure-7.0Upgrade linux-image-6.8.0-1051-gkeopUpgrade linux-image-oem-7.0Upgrade linux-image-awsUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-gke-64k-7.0Upgrade linux-image-nvidia-bos-64kUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-7.0.0-1018-nvidia-64kUpgrade linux-image-realtime-hwe-26.04Upgrade linux-image-generic-64k-6.8Upgrade linux-image-realtime-6.8.1Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-nvidia-64kUpgrade linux-image-kvmUpgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-7.0.0-31-genericUpgrade linux-image-7.0.0-2018-nvidia-bosUpgrade linux-image-7.0.0-1019-raspi-realtimeUpgrade linux-image-7.0.0-1012-awsUpgrade linux-image-7.0.0-1011-oracle-64kUpgrade linux-image-6.8.0-1064-nvidiaUpgrade linux-image-aws-7.0Upgrade linux-image-raspiUpgrade linux-image-6.8.0-146-lowlatencyUpgrade linux-image-azure-fde-6.8Upgrade linux-image-generic-64kUpgrade linux-image-azure-fipsUpgrade linux-image-aws-64k-6.8Upgrade linux-image-7.0.0-1018-nvidiaUpgrade linux-image-6.8.0-1066-aws-64kUpgrade linux-image-oracle-6.8Upgrade linux-image-nvidia-bos-7.0Upgrade linux-image-laptop-23.10Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-gcp-64kUpgrade linux-image-6.8.1-1061-realtimeUpgrade linux-image-nvidia-7.0Upgrade linux-image-generic-64k-7.0Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-7.0.0-1012-aws-64kUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-6.8.0-1069-azure-fipsUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-realtimeUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-gke-64k-6.8Upgrade linux-image-gke-64kUpgrade linux-image-oracle-64kUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-generic-7.0Upgrade linux-image-virtual-6.8Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-oem-26.04aUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-intel-iotgUpgrade linux-image-generic-hwe-26.04Upgrade linux-image-azure-fdeUpgrade linux-image-aws-lts-24.04Upgrade linux-image-7.0.0-31-generic-64kUpgrade linux-image-6.8.0-1064-nvidia-64kUpgrade linux-image-6.8.0-146-fipsUpgrade linux-image-azureUpgrade linux-image-gcp-fipsUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-nvidia-6.8Upgrade linux-image-6.8.0-146-lowlatency-64kUpgrade linux-image-6.8.0-146-generic-64kUpgrade linux-image-realtime-64kUpgrade linux-image-raspi-7.0 | Sep 14, 2026 | Sep 7, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 28, 2026 | Jul 1, 2026 |
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