CVE-2026-68102 Affecting kernel-default-livepatch-devel package, versions <6.4.0-150700.53.81.1
Threat Intelligence
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Test your applications- Snyk IDSNYK-SLES157-KERNELDEFAULTLIVEPATCHDEVEL-19913263
- published18 Sept 2026
- disclosed17 Sept 2026
Introduced: 17 Sep 2026
NewCVE-2026-68102 (opens in a new tab)How to fix?
Upgrade SLES:15.7 kernel-default-livepatch-devel to version 6.4.0-150700.53.81.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-default-livepatch-devel package and not the kernel-default-livepatch-devel package as distributed by SLES.
See How to fix? for SLES:15.7 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: fix aperture mapping leak
amdgpu_pci_remove() calls drm_dev_unplug() before invoking the driver fini routines. This causes drm_dev_enter() in amdgpu_ttm_fini() to always return false, so iounmap(aper_base_kaddr) never runs on normal driver unload, leaving an orphaned entry in the x86 PAT interval tree.
On connected_to_cpu hardware, the aperture is mapped write-back (WB) via ioremap_cache(). On reload, IP discovery calls memremap(..., MEMREMAP_WC) over the same range. The WC vs WB conflict causes:
ioremap error for 0x..., requested 0x1, got 0x0 amdgpu: discovery failed: -2
Fix by switching to devres-managed mappings so cleanup is guaranteed regardless of drm_dev_enter() state:
connected_to_cpu path: devm_memremap(MEMREMAP_WB). For IORESOURCE_SYSTEM_RAM ranges this takes the try_ram_remap() shortcut, returning __va(offset) from the existing kernel direct map. No new ioremap VA or PAT entry is created, so there is nothing to orphan.
dGPU path: devm_ioremap_wc() registers iounmap() as a devres action, guaranteeing cleanup at device_del() time.
Also remove iounmap(aper_base_kaddr) from amdgpu_device_unmap_mmio() since the mapping is now devres-owned.
v2: Remove redundant x86_64 guard (Lijo)
(cherry picked from commit d871e99879cb5fd1fa798b006b4888887e63a17a)
References
- https://www.suse.com/security/cve/CVE-2026-68102.html
- https://bugzilla.suse.com/1274764
- https://git.kernel.org/stable/c/6405c4e75b3bcf0e72bd7a0ff5f1ed0c475e23aa
- https://git.kernel.org/stable/c/67bc3647e418e23dc0d17604bdba634a73de809f
- https://git.kernel.org/stable/c/a343d028ad6c174da8dc6af560c51e6d140a6727
- https://git.kernel.org/stable/c/ea772a440d56b285f4d491affac50ecd41f6b402
- https://git.kernel.org/stable/c/f5988b5c300a32ff751724ffd33d5a8d5873e4a7