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CVE-2026-89730

Estado: RecibidaSin puntuar—

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.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-89730",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948",
              "lessThan": "447b3c893987a0106a65f04b62ec3271892e9d98",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948",
              "lessThan": "3b8938f5fbcf4a918785f9cb4b108782eb4ea717",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948",
              "lessThan": "2564ac3d3b8b47cd9692a5bf42d668ed7218b54e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948",
              "lessThan": "8f3365ed2a5db2ac95ab70a6c47561db39d24537",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948",
              "lessThan": "b138bc665e21d4422382ab43aebdf0a2b7bb9cb3",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948",
              "lessThan": "827ec385458adeeda651de2b6f3537e386b1a8d9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948",
              "lessThan": "4dc1051939e499c838229af035464a5fc7671198",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948",
              "lessThan": "9da70a43b5fea60d758137f7f0ccfe19356cb5bb",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/fpga/altera-cvp.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.14"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.14",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/fpga/altera-cvp.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-11T20:20:03.363",
  "references": [
    {
      "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",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "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."
    }
  ],
  "lastModified": "2026-09-14T13:19:22.170",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}