{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "a729b7f0bd5bf4919306556aed614438f5174537"
            },
            {
              "fixed": "f511dd7bf6077aa7afbe72914520553fedaacbb4"
            },
            {
              "fixed": "e1df6cff03aad8c96e55a8b2a991e505c7a3ff6f"
            },
            {
              "fixed": "297f459865360b46a887667cbf3aac6a6f013841"
            },
            {
              "fixed": "336c1e414fc0e9844d445174e8ada2a7dd8d1c4b"
            },
            {
              "fixed": "bcdf3a3664f7d2c4e37e155f30f72ef33f041804"
            },
            {
              "fixed": "7aa0e64fea778a9e3df73e64da95367ff8ad2ea5"
            },
            {
              "fixed": "f1e7807df5bf2d42a40266430e9f82f37633cdcf"
            },
            {
              "fixed": "b7f97cae7ec1b6c3c32843c42be218690d310467"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.19.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72326.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: cake: reject overhead values that underflow length\n\nCAKE accepts signed overhead values and stores them in an s16, but the\nadjusted packet length calculation uses unsigned arithmetic.  A negative\neffective length can therefore wrap to a large value.\n\nSuch configurations make rate accounting depend on integer wraparound\nrather than on the packet size userspace intended to model.  A static\nnetlink lower bound is not enough because packets reaching CAKE can be\nsmaller than any reasonable manual-overhead allowance.\n\nFold the signed overhead adjustment into the existing datapath MPU clamp\nso negative adjusted lengths are clamped before link-layer framing\nadjustments.",
  "id": "CVE-2026-72326",
  "modified": "2026-08-18T03:30:57.534182398Z",
  "published": "2026-08-15T05:55:36.811Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/297f459865360b46a887667cbf3aac6a6f013841"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/336c1e414fc0e9844d445174e8ada2a7dd8d1c4b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7aa0e64fea778a9e3df73e64da95367ff8ad2ea5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b7f97cae7ec1b6c3c32843c42be218690d310467"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bcdf3a3664f7d2c4e37e155f30f72ef33f041804"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e1df6cff03aad8c96e55a8b2a991e505c7a3ff6f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1e7807df5bf2d42a40266430e9f82f37633cdcf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f511dd7bf6077aa7afbe72914520553fedaacbb4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72326.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72326"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "net/sched: cake: reject overhead values that underflow length"
}