{
  "cveId": "CVE-2026-74716",
  "url": "https://patchblox.com/security/cve/CVE-2026-74716",
  "summary": "CVE-2026-74716 is fixed in linux on 1 platform by DEBIAN-CVE-2026-74716 (version 7.1.9-1), released September 4, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  accel/amdxdna: Fix locally exploitable BUG_ON in...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  accel/amdxdna: Fix locally exploitable BUG_ON in amdxdna_insert_pages()  In amdxdna_insert_pages(), vm_flags_mod() sets VM_MIXEDMAP and clears VM_PFNMAP. If an unprivileged userspace process mmaps a non-imported GEM object and then calls madvise(MADV_DONTNEED), the PTEs will be successfully cleared because VM_MIXEDMAP allows this (unlike VM_PFNMAP).  When userspace subsequently accesses the memory, drm_gem_shmem_fault() handles the page fault and attempts to map the backing shmem page via vmf_insert_pfn() which calls vmf_insert_pfn_prot(). Because the backing shmem page is normal system memory (pfn_valid(pfn) is true) and the VMA now has VM_MIXEDMAP set, won\u0027t this predictably trigger the explicit assertion BUG_ON((vma-\u003Evm_flags \u0026 VM_MIXEDMAP) \u0026\u0026 pfn_valid(pfn))  Fix by removing the vm_flags_mod() call and replacing the vm_insert_pages() pre-population with the handle_mm_fault() loop that was already used for the import (dma-buf) path.",
  "published": "2026-08-22T16:16:46Z",
  "severity": "",
  "epss": 0.00166,
  "epssPercentile": 0.05882,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.9-1",
      "fix": "DEBIAN-CVE-2026-74716",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-74716",
      "released": "2026-09-04T01:46:23Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}