GHSA-JFQ5-QG8X-7RMP

Vulnerability from github – Published: 2026-02-18 15:31 – Updated: 2026-02-18 15:31
VLAI?
Details

In the Linux kernel, the following vulnerability has been resolved:

scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()

In iscsit_dec_conn_usage_count(), the function calls complete() while holding the conn->conn_usage_lock. As soon as complete() is invoked, the waiter (such as iscsit_close_connection()) may wake up and proceed to free the iscsit_conn structure.

If the waiter frees the memory before the current thread reaches spin_unlock_bh(), it results in a KASAN slab-use-after-free as the function attempts to release a lock within the already-freed connection structure.

Fix this by releasing the spinlock before calling complete().

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23216"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-18T15:18:42Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()\n\nIn iscsit_dec_conn_usage_count(), the function calls complete() while\nholding the conn-\u003econn_usage_lock. As soon as complete() is invoked, the\nwaiter (such as iscsit_close_connection()) may wake up and proceed to free\nthe iscsit_conn structure.\n\nIf the waiter frees the memory before the current thread reaches\nspin_unlock_bh(), it results in a KASAN slab-use-after-free as the function\nattempts to release a lock within the already-freed connection structure.\n\nFix this by releasing the spinlock before calling complete().",
  "id": "GHSA-jfq5-qg8x-7rmp",
  "modified": "2026-02-18T15:31:27Z",
  "published": "2026-02-18T15:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23216"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/275016a551ba1a068a3bd6171b18611726b67110"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3835e49e146a4e6e7787b29465f1a23379b6ec44"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/48fe983e92de2c59d143fe38362ad17ba23ec7f3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/73b487d44bf4f92942629d578381f89c326ff77f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8518f072fc92921418cd9ed4268dd4f3e9a8fd75"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9411a89e9e7135cc459178fa77a3f1d6191ae903"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ba684191437380a07b27666eb4e72748be1ea201"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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