{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "10caabdaad5ace85577a453da97d1f8d3b944427"
            },
            {
              "fixed": "304ea40ef4561671503c36e47da44a0a31b71e36"
            },
            {
              "fixed": "e393789e92310d7c66f57c876101779c90816a12"
            },
            {
              "fixed": "18b2969073879b9cce24e1a78b118bdad54518d1"
            },
            {
              "fixed": "7ee07f601f8f507c9faf25c68a49396ab8950596"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.3.0"
            },
            {
              "fixed": "6.12.111"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "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/2026/98xxx/CVE-2026-98015.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put\n\nIn mlx5_eswitch_termtbl_put(), the zero-ref cleanup check reads\ntt-\u003eref_count after termtbl_mutex has been released.  Two concurrent\ncallers on the same mlx5_termtbl_handle race: one decrements ref_count\nto zero, removes the hash entry, and calls kfree(tt) while the other\nhas already dropped the mutex and is about to evaluate\nif (!tt-\u003eref_count), producing a use-after-free.\n\nFix this by capturing the result of the decrement into a stack-local\nlast variable before dropping the mutex.  The cleanup decision is now\nmade entirely under termtbl_mutex, and tt is not touched after\nkfree.",
  "id": "CVE-2026-98015",
  "modified": "2026-09-27T03:30:35.998547600Z",
  "published": "2026-09-25T10:23:37.724Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/18b2969073879b9cce24e1a78b118bdad54518d1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/304ea40ef4561671503c36e47da44a0a31b71e36"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ee07f601f8f507c9faf25c68a49396ab8950596"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e393789e92310d7c66f57c876101779c90816a12"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98015.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98015"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "net/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put"
}