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FKIE_CVE-2026-89730

Vulnerability from fkie_nvd - Published: 2026-09-11 20:20 - Updated: 2026-09-14 13:19
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: fpga: altera-cvp: Avoid out-of-bounds read in trailing byte write The trailing byte path in altera_cvp_send_block() dereferences a u32 pointer even when only 1-3 bytes remain in the input buffer. If the buffer ends at a page or scatterlist boundary, this can read past the valid image data and fault. Copy the remaining bytes into a zero-initialized u32 before writing the final word so only valid bytes are read from the input buffer.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2564ac3d3b8b47cd9692a5bf42d668ed7218b54e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3b8938f5fbcf4a918785f9cb4b108782eb4ea717
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/447b3c893987a0106a65f04b62ec3271892e9d98
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4dc1051939e499c838229af035464a5fc7671198
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/827ec385458adeeda651de2b6f3537e386b1a8d9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8f3365ed2a5db2ac95ab70a6c47561db39d24537
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9da70a43b5fea60d758137f7f0ccfe19356cb5bb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b138bc665e21d4422382ab43aebdf0a2b7bb9cb3
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/fpga/altera-cvp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "447b3c893987a0106a65f04b62ec3271892e9d98",
              "status": "affected",
              "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948",
              "versionType": "git"
            },
            {
              "lessThan": "3b8938f5fbcf4a918785f9cb4b108782eb4ea717",
              "status": "affected",
              "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948",
              "versionType": "git"
            },
            {
              "lessThan": "2564ac3d3b8b47cd9692a5bf42d668ed7218b54e",
              "status": "affected",
              "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948",
              "versionType": "git"
            },
            {
              "lessThan": "8f3365ed2a5db2ac95ab70a6c47561db39d24537",
              "status": "affected",
              "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948",
              "versionType": "git"
            },
            {
              "lessThan": "b138bc665e21d4422382ab43aebdf0a2b7bb9cb3",
              "status": "affected",
              "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948",
              "versionType": "git"
            },
            {
              "lessThan": "827ec385458adeeda651de2b6f3537e386b1a8d9",
              "status": "affected",
              "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948",
              "versionType": "git"
            },
            {
              "lessThan": "4dc1051939e499c838229af035464a5fc7671198",
              "status": "affected",
              "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948",
              "versionType": "git"
            },
            {
              "lessThan": "9da70a43b5fea60d758137f7f0ccfe19356cb5bb",
              "status": "affected",
              "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/fpga/altera-cvp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.14"
            },
            {
              "lessThan": "4.14",
              "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": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "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\nfpga: altera-cvp: Avoid out-of-bounds read in trailing byte write\n\nThe trailing byte path in altera_cvp_send_block() dereferences a u32\npointer even when only 1-3 bytes remain in the input buffer. If the buffer\nends at a page or scatterlist boundary, this can read past the valid image\ndata and fault.\n\nCopy the remaining bytes into a zero-initialized u32 before writing the\nfinal word so only valid bytes are read from the input buffer."
    }
  ],
  "id": "CVE-2026-89730",
  "lastModified": "2026-09-14T13:19:22.170",
  "metrics": {},
  "published": "2026-09-11T20:20:03.363",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2564ac3d3b8b47cd9692a5bf42d668ed7218b54e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3b8938f5fbcf4a918785f9cb4b108782eb4ea717"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/447b3c893987a0106a65f04b62ec3271892e9d98"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4dc1051939e499c838229af035464a5fc7671198"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/827ec385458adeeda651de2b6f3537e386b1a8d9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8f3365ed2a5db2ac95ab70a6c47561db39d24537"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9da70a43b5fea60d758137f7f0ccfe19356cb5bb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b138bc665e21d4422382ab43aebdf0a2b7bb9cb3"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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