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GHSA-V727-F437-6CXX

Vulnerability from github – Published: 2023-12-21 21:30 – Updated: 2024-08-02 15:31
VLAI
Details

A race condition was found in the GSM 0710 tty multiplexor in the Linux kernel. This issue occurs when two threads execute the GSMIOC_SETCONF ioctl on the same tty file descriptor with the gsm line discipline enabled, and can lead to a use-after-free problem on a struct gsm_dlci while restarting the gsm mux. This could allow a local unprivileged user to escalate their privileges on the system.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2023-6546"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362",
      "CWE-366",
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-12-21T20:15:08Z",
    "severity": "HIGH"
  },
  "details": "A race condition was found in the GSM 0710 tty multiplexor in the Linux kernel. This issue occurs when two threads execute the GSMIOC_SETCONF ioctl on the same tty file descriptor with the gsm line discipline enabled, and can lead to a use-after-free problem on a struct gsm_dlci while restarting the gsm mux. This could allow a local unprivileged user to escalate their privileges on the system.",
  "id": "GHSA-v727-f437-6cxx",
  "modified": "2024-08-02T15:31:16Z",
  "published": "2023-12-21T21:30:31Z",
  "references": [
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      "url": "https://www.zerodayinitiative.com/advisories/ZDI-CAN-20527"
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2255498"
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  "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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