{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-40966",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-40966"
  ],
  "published": "2024-07-12T12:32:42Z",
  "summary": "tty: add the option to have a tty reject a new ldisc",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: add the option to have a tty reject a new ldisc\n\n... and use it to limit the virtual terminals to just N_TTY.  They are\nkind of special, and in particular, the \"con_write()\" routine violates\nthe \"writes cannot sleep\" rule that some ldiscs rely on.\n\nThis avoids the\n\n   BUG: sleeping function called from invalid context at kernel/printk/printk.c:2659\n\nwhen N_GSM has been attached to a virtual console, and gsmld_write()\ncalls con_write() while holding a spinlock, and con_write() then tries\nto get the console lock.",
  "affected": [
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        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
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        "1:6.1.58-1+rpt2",
        "1:6.1.63-1+rpt1",
        "1:6.1.73-1+rpt1",
        "1:6.6.20-1+rpt1",
        "1:6.6.28-1+rpt1",
        "1:6.6.31-1+rpt1"
      ],
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-40966"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3c6332f3bb1578b5b10ac2561247b1d6272ae937"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/287b569a5b914903ba7c438a3c0dbc3410ebb409"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5920ac19964f9e20181f63b410d9200ddbf8dc86"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6bd23e0c2bb6c65d4f5754d1456bc9a4427fc59b"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}