{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-46309",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-46309",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-06-08T15:50:39.689Z",
    "updatedAt": "2026-07-15T00:50:51.323Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "drm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise\n\nAdd validation in xe_vm_madvise_ioctl() to reject PAT indices with\nXE_COH_NONE coherency mode when applied to CPU cached memory.\n\nUsing coh_none with CPU cached buffers is a security issue. When the\nkernel clears pages before reallocation, the clear operation stays in\nCPU cache (dirty). GPU with coh_none can bypass CPU caches and read\nstale sensitive data directly from DRAM, potentially leaking data from\npreviously freed pages of other processes.\n\nThis aligns with the existing validation in vm_bind path\n(xe_vm_bind_ioctl_validate_bo).\n\nv2(Matthew brost)\n- Add fixes\n- Move one debug print to better place\n\nv3(Matthew Auld)\n- Should be drm/xe/uapi\n- More Cc\n\nv4(Shuicheng Lin)\n- Fix kmem leak issues by the way\n\nv5\n- Remove kmem leak because it has been merged by another patch\n\nv6\n- Remove the fix which is not related to current fix\n\nv7\n- No change\n\nv8\n- Rebase\n\nv9\n- Limit the restrictions to iGPU\n\nv10\n- No change\n\n(cherry picked from commit 016ccdb674b8c899940b3944952c96a6a490d10a)",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "ada7486c5668db542a7d361268df931aca5b726a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "87f9b1528e1ffc1da3615d552c9a06aba5e20b00"
            },
            {
              "version": "ada7486c5668db542a7d361268df931aca5b726a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fea04cf6f2345bc50f15b6638906c35962b89424"
            },
            {
              "version": "ada7486c5668db542a7d361268df931aca5b726a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4e5591c2fc1b30f4ea5e2eab4c3a695acc404e39"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.18",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.18"
            },
            {
              "version": "6.18.32",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.9",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}