{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b2588ea40ec9472688289c1a644627c0f4a1f33f"
            },
            {
              "fixed": "88664c48d7d1eca8e1ac92da85c89c26af741cf1"
            },
            {
              "fixed": "d2897717cd222e575599d903d885c48602699800"
            },
            {
              "fixed": "e7386770be1bf810bcd6af39d1e4bfeab3408430"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.17.0"
            },
            {
              "fixed": "6.18.45"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74698.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: fix BQL reset on SQ re-activation\n\nmlx5e_queue_start() deactivates and re-activates all channels but closes\nonly the queue being restarted. mlx5e_activate_txqsq() then\nunconditionally calls netdev_tx_reset_queue(), zeroing the BQL counters\nof channels that kept their in-flight TX WQEs. The next completion then\nover-charges and trips the BUG_ON() in dql_completed():\n\n  kernel BUG at lib/dynamic_queue_limits.c:99!\n  RIP: 0010:dql_completed+0x23d/0x280\n  Call Trace:\n   \u003cIRQ\u003e\n   mlx5e_poll_tx_cq+0x668/0xa60\n   mlx5e_napi_poll+0x5b/0x7b0\n   net_rx_action+0x15a/0x580\n\nReset BQL only when the SQ has no bytes in flight (sq-\u003ecc == sq-\u003epc).\n\nIn the case that reset is skipped, the outstanding WQEs will eventually\ncomplete and rebalance the dql. The dql-\u003elimit is carried across the\nreset.",
  "id": "CVE-2026-74698",
  "modified": "2026-08-24T11:35:51.542105064Z",
  "published": "2026-08-22T15:32:59.703Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/88664c48d7d1eca8e1ac92da85c89c26af741cf1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d2897717cd222e575599d903d885c48602699800"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7386770be1bf810bcd6af39d1e4bfeab3408430"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74698.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74698"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "net/mlx5e: fix BQL reset on SQ re-activation"
}