FKIE_CVE-2026-90286

Vulnerability from fkie_nvd - Published: 2026-09-17 17:17 - Updated: 2026-09-18 18:17
Severity
8.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/gfx6: Use PFP on the compute queues too On GFX6, the compute rings use the same CP path as the graphics ring. The only difference is that they don't support draw commands. (As opposed to GFX7 and newer which have a separate command parser that is called MEC for compute queues.) This means that we have to take into consideration that the PFP also exists on compute queues on GFX6: Use PFP for register writes on both graphics and compute queues. In the pipeline sync, use the PFP to wait for the previous fence (and not the ME) to prevent the PFP from starting to execute the next submission while the ME is still in the previous submission. After a VM flush, emit PFP_SYNC_ME on compute queues as well.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2aa869c6b23e0b1b7f39f762618852811d75deb9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/60f20946cd318518ddc2c0da12103c666b2b9564
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8d752f1bb73fabe5a425acbf5c767c0fe68bf3c5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b5d1d3e4519dc8f1b55d6b236848bed67b11a2e8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e1d3018e3621c90cec070b6915836ae129656663
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e399e9d7e291ccbeba6560fb8278c8d2aa744521
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f37211b9c01433f0bbb4709d25df7a0257cf915b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fbabc39b4f0fc771b00525ffd448be6a84355048
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f37211b9c01433f0bbb4709d25df7a0257cf915b",
              "status": "affected",
              "version": "2cd46ad22383ab8372b86cdb5257589496099412",
              "versionType": "git"
            },
            {
              "lessThan": "2aa869c6b23e0b1b7f39f762618852811d75deb9",
              "status": "affected",
              "version": "2cd46ad22383ab8372b86cdb5257589496099412",
              "versionType": "git"
            },
            {
              "lessThan": "fbabc39b4f0fc771b00525ffd448be6a84355048",
              "status": "affected",
              "version": "2cd46ad22383ab8372b86cdb5257589496099412",
              "versionType": "git"
            },
            {
              "lessThan": "b5d1d3e4519dc8f1b55d6b236848bed67b11a2e8",
              "status": "affected",
              "version": "2cd46ad22383ab8372b86cdb5257589496099412",
              "versionType": "git"
            },
            {
              "lessThan": "e1d3018e3621c90cec070b6915836ae129656663",
              "status": "affected",
              "version": "2cd46ad22383ab8372b86cdb5257589496099412",
              "versionType": "git"
            },
            {
              "lessThan": "8d752f1bb73fabe5a425acbf5c767c0fe68bf3c5",
              "status": "affected",
              "version": "2cd46ad22383ab8372b86cdb5257589496099412",
              "versionType": "git"
            },
            {
              "lessThan": "e399e9d7e291ccbeba6560fb8278c8d2aa744521",
              "status": "affected",
              "version": "2cd46ad22383ab8372b86cdb5257589496099412",
              "versionType": "git"
            },
            {
              "lessThan": "60f20946cd318518ddc2c0da12103c666b2b9564",
              "status": "affected",
              "version": "2cd46ad22383ab8372b86cdb5257589496099412",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.9"
            },
            {
              "lessThan": "4.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/gfx6: Use PFP on the compute queues too\n\nOn GFX6, the compute rings use the same CP path as\nthe graphics ring. The only difference is that they\ndon\u0027t support draw commands. (As opposed to GFX7 and\nnewer which have a separate command parser that is\ncalled MEC for compute queues.)\n\nThis means that we have to take into consideration\nthat the PFP also exists on compute queues on GFX6:\n\nUse PFP for register writes on both graphics and\ncompute queues.\n\nIn the pipeline sync, use the PFP to wait for the\nprevious fence (and not the ME) to prevent the PFP\nfrom starting to execute the next submission while\nthe ME is still in the previous submission.\n\nAfter a VM flush, emit PFP_SYNC_ME on compute\nqueues as well."
    }
  ],
  "id": "CVE-2026-90286",
  "lastModified": "2026-09-18T18:17:51.573",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 6.0,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-17T17:17:25.500",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2aa869c6b23e0b1b7f39f762618852811d75deb9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/60f20946cd318518ddc2c0da12103c666b2b9564"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8d752f1bb73fabe5a425acbf5c767c0fe68bf3c5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b5d1d3e4519dc8f1b55d6b236848bed67b11a2e8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e1d3018e3621c90cec070b6915836ae129656663"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e399e9d7e291ccbeba6560fb8278c8d2aa744521"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f37211b9c01433f0bbb4709d25df7a0257cf915b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fbabc39b4f0fc771b00525ffd448be6a84355048"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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