{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "16ecf6dff97ce0194a7126e26159492668d47a7e"
            },
            {
              "fixed": "f7ae26c100a6c26c2a166d2c41e73188067b36bd"
            },
            {
              "fixed": "6ea647e76c44387d5c1c635df4604c2154d9060e"
            },
            {
              "fixed": "d40838a63f2bd6a3df0a6cdd8ff1d5c6366e8fff"
            },
            {
              "fixed": "e21cccc29b840930cd9dcfdf1139658063a681af"
            },
            {
              "fixed": "84cfebf7f4229d748cca8eb9c4e1f1c4099d3ab7"
            },
            {
              "fixed": "8c14472431e27f13661d0db9d837156eaced0ecb"
            },
            {
              "fixed": "b95315ffc66b39856396c1043618bb4e4d5785ba"
            },
            {
              "fixed": "cf4500ebf6fb57bf4ab83c3dd349a40257dbe2a9"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.0.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "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-2026-89724.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: vicodec: fix out-of-bounds write in FWHT encoder\n\nvidioc_s_fmt_vid_out() sizes the encoder CAPTURE buffer from the\ncompressed descriptor pixfmt_fwht, whose sizeimage_mult is 3:\ncoded_w * coded_h * 3 + sizeof(struct fwht_cframe_hdr). fwht_encode_frame()\nencodes one plane per component, and an incompressible plane takes the\nFWHT_FRAME_UNENCODED path in encode_plane(), copying the plane verbatim.\n\nFor a 4-component pixel format all four planes are full resolution\n(width_div == height_div == 1), so a frame that forces every plane\nthrough the unencoded fallback writes\nsizeof(struct fwht_cframe_hdr) + 4 * coded_w * coded_h bytes, overrunning\nthe plane by coded_w * coded_h, which can result in corruption\nof adjacent kernel heap memory.\n\nBump pixfmt_fwht.sizeimage_mult from 3 to 4, matching the largest\ncomponents_num among the supported raw formats, so the capture buffer is\nalways large enough for the unencoded fallback.",
  "id": "CVE-2026-89724",
  "modified": "2026-09-15T03:30:31.026479945Z",
  "published": "2026-09-11T19:46:35.914Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6ea647e76c44387d5c1c635df4604c2154d9060e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/84cfebf7f4229d748cca8eb9c4e1f1c4099d3ab7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8c14472431e27f13661d0db9d837156eaced0ecb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b95315ffc66b39856396c1043618bb4e4d5785ba"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf4500ebf6fb57bf4ab83c3dd349a40257dbe2a9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d40838a63f2bd6a3df0a6cdd8ff1d5c6366e8fff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e21cccc29b840930cd9dcfdf1139658063a681af"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f7ae26c100a6c26c2a166d2c41e73188067b36bd"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89724.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89724"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "media: vicodec: fix out-of-bounds write in FWHT encoder"
}