{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f05837ed73d0c73e950b2d9f2612febb0d3d451e"
            },
            {
              "fixed": "4048ed98860d3785645ebbd34f69566a6c7320c3"
            },
            {
              "fixed": "73a5af059905d171b398c8b2381632ee499948b5"
            },
            {
              "fixed": "b3e005f16cd98f815429a87aef4c61e9c140779f"
            },
            {
              "fixed": "000e8454692cab9d1f1b80130e2870e355301d06"
            },
            {
              "fixed": "23308af722fefed00af5f238024c11710938fba3"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.3.0"
            },
            {
              "fixed": "6.6.141"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.91"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.33"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53126.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-cgroup: fix disk reference leak in blkcg_maybe_throttle_current()\n\nAdd the missing put_disk() on the error path in\nblkcg_maybe_throttle_current(). When blkcg lookup, blkg lookup, or\nblkg_tryget() fails, the function jumps to the out label which only\ncalls rcu_read_unlock() but does not release the disk reference acquired\nby blkcg_schedule_throttle() via get_device(). Since current-\u003ethrottle_disk\nis already set to NULL before the lookup, blkcg_exit() cannot release\nthis reference either, causing the disk to never be freed.\n\nRestore the reference release that was present as blk_put_queue() in the\noriginal code but was inadvertently dropped during the conversion from\nrequest_queue to gendisk.",
  "id": "CVE-2026-53126",
  "modified": "2026-07-08T05:38:22.709496769Z",
  "published": "2026-06-24T16:30:54.594Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/000e8454692cab9d1f1b80130e2870e355301d06"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/23308af722fefed00af5f238024c11710938fba3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4048ed98860d3785645ebbd34f69566a6c7320c3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/73a5af059905d171b398c8b2381632ee499948b5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b3e005f16cd98f815429a87aef4c61e9c140779f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53126.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53126"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "blk-cgroup: fix disk reference leak in blkcg_maybe_throttle_current()"
}