{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ffd980f976e7fd666c2e61bf8ab35107efd11828"
            },
            {
              "fixed": "b64f60c468d149aca22ea56bb842b9730215aaa5"
            },
            {
              "fixed": "c8a5d7cb095d3b12bd9dcf752d6ca0ff50872ac5"
            },
            {
              "fixed": "4b97410f4bba18d2ee2784c8e089104f387bc27c"
            },
            {
              "fixed": "5f246b96ab47523ec9b8ea870b5c567a3cb1eb1c"
            },
            {
              "fixed": "656ff69ef235699035e57d9e1ae417e62a38aa7f"
            },
            {
              "fixed": "136de17f38630307991c59aa7080012a99451783"
            },
            {
              "fixed": "c312b750bb5ac3348cfc85dab25e90937bd4d251"
            },
            {
              "fixed": "58fd6cbc8541216af1d7ed272ea7ac2b66d50fd8"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.25"
            },
            {
              "fixed": "5.10.265"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.216"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.183"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "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": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72117.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: bcm: fix data race on rx_stamp/rx_ifindex in bcm_rx_handler()\n\nFor an rx op subscribed on all interfaces (ifindex == 0), the same op\nis registered once in the shared per-netns wildcard filter list, so\nbcm_rx_handler() can run concurrently on different CPUs for frames\narriving on different net devices.\n\nop-\u003erx_stamp and op-\u003erx_ifindex were written before bcm_rx_update_lock was\ntaken, allowing concurrent writers to race each other - including a torn\nstore of the 64-bit rx_stamp on 32-bit platforms.\n\nBeyond a torn store bcm_send_to_user() must report the timestamp/ifindex\nof the very same frame whose content it is delivering. So the assignment\nis placed in the same unbroken bcm_rx_update_lock section as the content\ncomparison.\n\nAs a side effect, the RTR-request frame feature (which never reach\nbcm_send_to_user()) no longer updates rx_stamp/rx_ifindex, since only\nthe notification path needs them.",
  "id": "CVE-2026-72117",
  "modified": "2026-08-21T03:30:24.617837103Z",
  "published": "2026-08-15T05:52:56.991Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/136de17f38630307991c59aa7080012a99451783"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4b97410f4bba18d2ee2784c8e089104f387bc27c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/58fd6cbc8541216af1d7ed272ea7ac2b66d50fd8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f246b96ab47523ec9b8ea870b5c567a3cb1eb1c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/656ff69ef235699035e57d9e1ae417e62a38aa7f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b64f60c468d149aca22ea56bb842b9730215aaa5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c312b750bb5ac3348cfc85dab25e90937bd4d251"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c8a5d7cb095d3b12bd9dcf752d6ca0ff50872ac5"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72117.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72117"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "can: bcm: fix data race on rx_stamp/rx_ifindex in bcm_rx_handler()"
}