{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "254f3239dd070e469f45c3ca8b6ac38e47d6c730"
            },
            {
              "fixed": "63bcc2fee6419963e45e7c2cd698fa862409601d"
            },
            {
              "fixed": "f329d42423089904758f2685cda295de9bf99441"
            },
            {
              "fixed": "7e87508b5c4d81210d0a736ed01962e52f5c4c56"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.15.0"
            },
            {
              "fixed": "6.18.55"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98574.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bcmgenet: stop Tx NAPI before disabling the queues\n\nbcmgenet_netif_stop() and the Wake-on-LAN branch of bcmgenet_suspend()\nboth disable the Tx queues first and stop Tx NAPI several steps later. A\ncompletion in flight calls netif_tx_wake_queue() in between, and nothing\nstops the queue again, so a transmit can reach the rings after they have\nbeen freed.\n\nClose is safe because dev_deactivate_many() stops the qdisc first.\nbcmgenet_suspend() does not, so stop Tx NAPI before the queues on both\npaths.\n\nKASAN on a Raspberry Pi CM4, driven from an MTU change because suspend\nfreezes user space before the callback runs:\n\n  BUG: KASAN: use-after-free in bcmgenet_xmit+0x17f8/0x2258\n  Write of size 8 at addr ffffff8055844a68 by task ksoftirqd/0/14\n   bcmgenet_xmit+0x17f8/0x2258\n   dev_hard_start_xmit+0x13c/0x588\n   sch_direct_xmit+0x108/0x340\n   __dev_queue_xmit+0x1190/0x3848",
  "id": "CVE-2026-98574",
  "modified": "2026-10-20T02:30:33.424708326Z",
  "published": "2026-10-18T15:18:39.767Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/63bcc2fee6419963e45e7c2cd698fa862409601d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7e87508b5c4d81210d0a736ed01962e52f5c4c56"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f329d42423089904758f2685cda295de9bf99441"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98574.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98574"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "net: bcmgenet: stop Tx NAPI before disabling the queues"
}