{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "34d1dc17ce978ae76e676d401b48fe9d004aa948"
            },
            {
              "fixed": "b138bc665e21d4422382ab43aebdf0a2b7bb9cb3"
            },
            {
              "fixed": "827ec385458adeeda651de2b6f3537e386b1a8d9"
            },
            {
              "fixed": "4dc1051939e499c838229af035464a5fc7671198"
            },
            {
              "fixed": "9da70a43b5fea60d758137f7f0ccfe19356cb5bb"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.14.0"
            },
            {
              "fixed": "6.12.109"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89730.json"
  },
  "details": "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",
  "modified": "2026-09-13T03:30:31.220758496Z",
  "published": "2026-09-11T19:46:40.581Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4dc1051939e499c838229af035464a5fc7671198"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/827ec385458adeeda651de2b6f3537e386b1a8d9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9da70a43b5fea60d758137f7f0ccfe19356cb5bb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b138bc665e21d4422382ab43aebdf0a2b7bb9cb3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89730.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89730"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "fpga: altera-cvp: Avoid out-of-bounds read in trailing byte write"
}