ghsa-v2j2-ph6r-wrg9
Vulnerability from github
Published
2024-02-29 06:30
Modified
2025-01-13 18:31
Severity ?
7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

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

ksmbd: fix race condition between session lookup and expire

Thread A + Thread B ksmbd_session_lookup | smb2_sess_setup sess = xa_load | | | xa_erase(&conn->sessions, sess->id); | | ksmbd_session_destroy(sess) --> kfree(sess) | // UAF! | sess->last_active = jiffies | +

This patch add rwsem to fix race condition between ksmbd_session_lookup and ksmbd_expire_session.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-52480"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-29T06:15:46Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix race condition between session lookup and expire\n\n Thread A                        +  Thread B\n ksmbd_session_lookup            |  smb2_sess_setup\n   sess = xa_load                |\n                                 |\n                                 |    xa_erase(\u0026conn-\u003esessions, sess-\u003eid);\n                                 |\n                                 |    ksmbd_session_destroy(sess) --\u003e kfree(sess)\n                                 |\n   // UAF!                       |\n   sess-\u003elast_active = jiffies   |\n                                 +\n\nThis patch add rwsem to fix race condition between ksmbd_session_lookup\nand ksmbd_expire_session.",
  "id": "GHSA-v2j2-ph6r-wrg9",
  "modified": "2025-01-13T18:31:55Z",
  "published": "2024-02-29T06:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52480"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/18ced78b0ebccc2d16f426143dc56ab3aad666be"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/53ff5cf89142b978b1a5ca8dc4d4425e6a09745f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a2ca5fd3dbcc665e1169044fa0c9e3eba779202b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c77fd3e25a51ac92b0f1b347a96eff6a0b4f066f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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