CVE-2026-89451iommu/sva: Set handle->dev before the SVA handle is visible
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: iommu/sva: Set handle->dev before the SVA handle is visible iommu_attach_device_pasid() installs the new SVA attach handle in the group PASID lookup before iommu_sva_bind_device() returns. A concurrent bind can therefore find and reuse the same handle after iommu_sva_lock is dropped. handle->dev was initialized after dropping iommu_sva_lock. This leaves a window where a racing bind can return a handle whose dev pointer is still NULL. A subsequent iommu_sva_unbind_device() can then dereference it via handle->dev->iommu_group. Initialize handle->dev before releasing iommu_sva_lock so any visible SVA handle is fully initialized.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 11, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from be51b1d6bbff48c7d1943a8ff1e5a55777807f6e before bcffb1c75da8fc9d51168ff9f09d471c26507912; from be51b1d6bbff48c7d1943a8ff1e5a55777807f6e before 968e9a1f71140c86dc4092f6b361e997923f3813; from be51b1d6bbff48c7d1943a8ff1e5a55777807f6e before 37a96a30617a4c96f048a5874c00509bc4fe4d85; from be51b1d6bbff48c7d1943a8ff1e5a55777807f6e before 530f8f9c3546cb3ebee1b135375aaee08a073ebb | CNA record |
References
- https://git.kernel.org/stable/c/bcffb1c75da8fc9d51168ff9f09d471c26507912
- https://git.kernel.org/stable/c/968e9a1f71140c86dc4092f6b361e997923f3813
- https://git.kernel.org/stable/c/37a96a30617a4c96f048a5874c00509bc4fe4d85
- https://git.kernel.org/stable/c/530f8f9c3546cb3ebee1b135375aaee08a073ebb
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.