{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d395a78db9eabd12633b39e05c80e803543b6590"
            },
            {
              "fixed": "9a998cc1c348769262d433acb7d238c5fac4b2e0"
            },
            {
              "fixed": "dbaf0e0023e2f9332c5164822def7f80b7d2c5ef"
            },
            {
              "fixed": "3068ab802fc98b121dcb451e1f7f4d338ffc7a19"
            },
            {
              "fixed": "b01df98a6669d2b67d8aed816021b327fd905998"
            },
            {
              "fixed": "afbe4bc252d90a6f8fad869b06d5430f615f22f9"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.14.0"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68206.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: v4l2-ctrls: validate HEVC active reference counts\n\nHEVC slice parameters are shared stateless V4L2 controls, but the common\nvalidation path does not verify the active L0/L1 reference counts before\ndriver-specific code consumes them.\n\nThe original report came from Cedrus, but the active count bounds are\nnot Cedrus-specific. Validate them in the common HEVC slice control path\nso stateless HEVC drivers get the same basic guarantees as soon as the\ncontrol is queued.\n\nDo not reject ref_idx_l0/ref_idx_l1 entries here. Existing userspace may\nuse out-of-range sentinel values such as 0xff for missing references, and\nsome hardware can use that information for concealment. Keep this common\ncheck limited to the active reference counts.",
  "id": "CVE-2026-68206",
  "modified": "2026-08-15T11:30:55.342757121Z",
  "published": "2026-08-10T12:00:25.309Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3068ab802fc98b121dcb451e1f7f4d338ffc7a19"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a998cc1c348769262d433acb7d238c5fac4b2e0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/afbe4bc252d90a6f8fad869b06d5430f615f22f9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b01df98a6669d2b67d8aed816021b327fd905998"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dbaf0e0023e2f9332c5164822def7f80b7d2c5ef"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68206.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68206"
    },
    {
      "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: v4l2-ctrls: validate HEVC active reference counts"
}