In the Linux kernel, the following vulnerability has been resolved:
drm/xe/reg_sr: Remove register pool
That pool implementation doesn't really work: if the krealloc happens to move the memory and return another address, the entries in the xarray become invalid, leading to use-after-free later:
BUG: KASAN: slab-use-after-free in xe_reg_sr_apply_mmio+0x570/0x760 [xe] Read of size 4 at addr ffff8881244b2590 by task modprobe/2753
Allocated by task 2753: kasan_save_stack+0x39/0x70 kasan_save_track+0x14/0x40 kasan_save_alloc_info+0x37/0x60 __kasan_kmalloc+0xc3/0xd0 __kmalloc_node_track_caller_noprof+0x200/0x6d0 krealloc_noprof+0x229/0x380
Simplify the code to fix the bug. A better pooling strategy may be added back later if needed.
(cherry picked from commit e5283bd4dfecbd3335f43b62a68e24dae23f59e4)
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 27, 2026 | Jul 27, 2026 |
| Ubuntu | — | Upgrade linux-image-6.8.0-2023-raspi-realtimeUpgrade linux-image-6.8.0-1030-gcpUpgrade linux-image-lowlatency-64kUpgrade linux-image-6.11.0-1011-lowlatency-64kUpgrade linux-image-generic-64kUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-6.8.0-1028-nvidia-64kUpgrade linux-image-lowlatencyUpgrade linux-image-6.11.0-1012-azureUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.8.0-1029-awsUpgrade linux-image-azure-lts-24.04Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-genericUpgrade linux-image-oem-22.04Upgrade linux-image-oem-24.04bUpgrade linux-image-6.8.0-60-genericUpgrade linux-image-6.8.0-1016-azure-nvidiaUpgrade linux-image-gkeop-6.8Upgrade linux-image-raspi-realtimeUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1028-nvidiaUpgrade linux-image-6.11.0-1017-oemUpgrade linux-image-oem-22.04aUpgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-generic-lpaeUpgrade linux-image-6.11.0-1013-oracleUpgrade linux-image-gcpUpgrade linux-image-azure-fdeUpgrade linux-image-nvidiaUpgrade linux-image-6.8.0-1029-azureUpgrade linux-image-gkeopUpgrade linux-image-6.8.0-1028-oemUpgrade linux-image-6.8.0-1028-raspiUpgrade linux-image-oracleUpgrade linux-image-6.11.0-1011-awsUpgrade linux-image-6.11.0-21-genericUpgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-6.8.0-1026-oracleUpgrade linux-image-ibm-classicUpgrade linux-image-6.11.0-1012-azure-fdeUpgrade linux-image-ibmUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.11.0-1007-realtimeUpgrade linux-image-6.8.0-1026-ibmUpgrade linux-image-azure-nvidiaUpgrade linux-image-virtualUpgrade linux-image-6.8.0-1025-gkeUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-gcp-64kUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-nvidia-64kUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-raspiUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-gkeUpgrade linux-image-oem-22.04cUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-oem-22.04bUpgrade linux-image-6.11.0-21-generic-64kUpgrade linux-image-6.8.0-1028-nvidia-lowlatency-64kUpgrade linux-image-6.11.0-1011-gcp-64kUpgrade linux-image-oem-22.04dUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-6.8.0-1012-gkeopUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-awsUpgrade linux-image-6.8.0-1028-nvidia-lowlatencyUpgrade linux-image-6.8.0-1026-oracle-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-6.8.1-1022-realtimeUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-oem-24.04aUpgrade linux-image-kvmUpgrade linux-image-azureUpgrade linux-image-6.8.0-60-lowlatencyUpgrade linux-image-oem-24.04Upgrade linux-image-6.8.0-60-generic-64kUpgrade linux-image-realtimeUpgrade linux-image-nvidia-6.8Upgrade linux-image-6.11.0-1011-gcpUpgrade linux-image-6.8.0-1030-gcp-64kUpgrade linux-image-6.8.0-1029-azure-fdeUpgrade linux-image-oracle-64kUpgrade linux-image-aws-lts-24.04Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-6.11.0-1011-lowlatencyUpgrade linux-image-6.8.0-60-lowlatency-64kUpgrade linux-image-6.11.0-1010-raspiUpgrade linux-image-6.11.0-1013-oracle-64kUpgrade linux-image-lowlatency-64k-hwe-22.04 | Mar 28, 2025 | Dec 27, 2024 |
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