ghsa-75q5-6x22-qjpw
Vulnerability from github
Published
2025-02-27 18:31
Modified
2025-02-27 18:31
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

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

crypto: ccree - Fix use after free in cc_cipher_exit()

kfree_sensitive(ctx_p->user.key) will free the ctx_p->user.key. But ctx_p->user.key is still used in the next line, which will lead to a use after free.

We can call kfree_sensitive() after dev_dbg() to avoid the uaf.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49258"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:02Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccree - Fix use after free in cc_cipher_exit()\n\nkfree_sensitive(ctx_p-\u003euser.key) will free the ctx_p-\u003euser.key. But\nctx_p-\u003euser.key is still used in the next line, which will lead to a\nuse after free.\n\nWe can call kfree_sensitive() after dev_dbg() to avoid the uaf.",
  "id": "GHSA-75q5-6x22-qjpw",
  "modified": "2025-02-27T18:31:08Z",
  "published": "2025-02-27T18:31:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49258"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25c358efee5153dfd240d4e0d3169d5bebe9cacd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/335bf1fc74f775a8255257aa3e33763f2257b676"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d950c34074ed74d2713c3856ba01264523289e6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c93017c8d5ebf55a4e453ac7c84cc84cf92ab570"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cffb5382bd8d3cf21b874ab5b84bf7618932286b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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