{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "73208dfd7ab19f379d73e8a0fbf30f92c203e5e8"
            },
            {
              "fixed": "f35cb67f2092b49d7949065dd56895ed47238f22"
            },
            {
              "fixed": "94fc0c5b45de2bf3a691619bcfd10b9a49fc647e"
            },
            {
              "fixed": "34a40e0dff940ac5eba494a69b553ea571e24873"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.29"
            },
            {
              "fixed": "6.18.53"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97537.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Fix queue teardown NULL dma_free and bitmap locking\n\nqla25xx_free_req_que() and qla25xx_free_rsp_que() have two pre-existing\nbugs exposed on the error path of qla25xx_create_{req,rsp}_que():\n\n 1. When dma_alloc_coherent() fails during queue creation, the error\n    path calls the free function with req-\u003ering / rsp-\u003ering still NULL\n    (from kzalloc).  The unconditional dma_free_coherent() with a NULL\n    cpu_addr is undefined behavior and can panic.\n\n 2. The free functions clear req_qid_map / rsp_qid_map under vport_lock,\n    but the create functions protect the same bitmaps with mq_lock.\n    This provides no mutual exclusion.  Additionally, the create error\n    path clears the bit and releases mq_lock before calling the free\n    function, creating a window where another thread can allocate the\n    same que_id and have its ha-\u003ereq_q_map entry clobbered by the\n    subsequent lockless NULL assignment in the free function.\n\nFix by:\n\n - Guarding dma_free_coherent() with a NULL check on the ring pointer.\n\n - Using mq_lock (the lock held by all creators) in the free functions\n   to atomically NULL the map entry and clear the bitmap bit.\n\n - Removing the now-redundant clear_bit blocks from the create error\n   paths since the free functions handle it atomically.",
  "id": "CVE-2026-97537",
  "modified": "2026-09-29T03:30:42.465166277Z",
  "published": "2026-09-25T10:21:35.608Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34a40e0dff940ac5eba494a69b553ea571e24873"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/94fc0c5b45de2bf3a691619bcfd10b9a49fc647e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f35cb67f2092b49d7949065dd56895ed47238f22"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97537.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97537"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "scsi: qla2xxx: Fix queue teardown NULL dma_free and bitmap locking"
}