CVE-2026-45931 — accel/amdxdna: Hold mm structure across iommu_sva_unbind_device()
In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Hold mm structure across iommu_sva_unbind_device() Some tests trigger a crash in iommu_sva_u…
Published: 2026-05-27 · CVSS: 7.8 · CVSS 3.1
In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Hold mm structure across iommu_sva_unbind_device() Some tests trigger a crash in iommu_sva_unbind_device() due to accessing iommu_mm after the associated mm structure has been freed. Fix this by taking an explicit reference to the mm structure after successfully binding the device, and releasing it only after the device is unbound. This ensures the mm remains valid for the entire SVA bind/unbind lifetime.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7