{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2"
            },
            {
              "fixed": "1a6dda72455b399ce9c1a12695471dc4d5c61add"
            },
            {
              "fixed": "2b3e241729e87afed13ac0f666472d5d6ca42e87"
            },
            {
              "fixed": "367acd288bc6255e247cb1a1efbf5c6567cab423"
            },
            {
              "fixed": "513f820b3f0cf4462e17d84c39ed3948d061a6ea"
            },
            {
              "fixed": "15444b57fdc6fc3f3e22a87f791ae5be81e6ecf5"
            },
            {
              "fixed": "e62adb157c2eaad9ad4867ec6cd9af5b9a51b1c7"
            },
            {
              "fixed": "806b7b6edc8446e8b94b706807a7090a14d47b5c"
            },
            {
              "fixed": "cdf19f380e46192e7084be559638aab1f6ed86a2"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.12"
            },
            {
              "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-2026-72297.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: atm: reject out-of-range traffic classes in QoS validation\n\nReject ATM traffic classes above ATM_ANYCLASS in check_tp().\nSO_ATMQOS stores the supplied QoS after check_qos() succeeds, so\naccepting larger values leaves invalid traffic_class values in\nvcc-\u003eqos.\n\nThat bad state later reaches pvc_info(), which indexes class_name[]\nwith vcc-\u003eqos.{rx,tp}.traffic_class. Values above ATM_ANYCLASS cause\nan out-of-bounds read when /proc/net/atm/pvc is read.\n\nTighten the existing QoS validation so invalid traffic_class values\nare rejected at the point where user supplied QoS is accepted.",
  "id": "CVE-2026-72297",
  "modified": "2026-08-18T03:31:29.795086109Z",
  "published": "2026-08-15T05:55:17.877Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/15444b57fdc6fc3f3e22a87f791ae5be81e6ecf5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1a6dda72455b399ce9c1a12695471dc4d5c61add"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2b3e241729e87afed13ac0f666472d5d6ca42e87"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/367acd288bc6255e247cb1a1efbf5c6567cab423"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/513f820b3f0cf4462e17d84c39ed3948d061a6ea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/806b7b6edc8446e8b94b706807a7090a14d47b5c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cdf19f380e46192e7084be559638aab1f6ed86a2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e62adb157c2eaad9ad4867ec6cd9af5b9a51b1c7"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72297.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72297"
    },
    {
      "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:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "net: atm: reject out-of-range traffic classes in QoS validation"
}