ghsa-936g-6jg3-mgp5
Vulnerability from github
Published
2024-11-07 12:30
Modified
2024-11-22 21:32
Details

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

bpf: Preserve param->string when parsing mount options

In bpf_parse_param(), keep the value of param->string intact so it can be freed later. Otherwise, the kmalloc area pointed to by param->string will be leaked as shown below:

unreferenced object 0xffff888118c46d20 (size 8): comm "new_name", pid 12109, jiffies 4295580214 hex dump (first 8 bytes): 61 6e 79 00 38 c9 5c 7e any.8.\~ backtrace (crc e1b7f876): [<00000000c6848ac7>] kmemleak_alloc+0x4b/0x80 [<00000000de9f7d00>] __kmalloc_node_track_caller_noprof+0x36e/0x4a0 [<000000003e29b886>] memdup_user+0x32/0xa0 [<0000000007248326>] strndup_user+0x46/0x60 [<0000000035b3dd29>] __x64_sys_fsconfig+0x368/0x3d0 [<0000000018657927>] x64_sys_call+0xff/0x9f0 [<00000000c0cabc95>] do_syscall_64+0x3b/0xc0 [<000000002f331597>] entry_SYSCALL_64_after_hwframe+0x4b/0x53

Show details on source website


{
  "affected": [],
  "aliases": [
    "CVE-2024-50165"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-07T10:15:07Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Preserve param-\u003estring when parsing mount options\n\nIn bpf_parse_param(), keep the value of param-\u003estring intact so it can\nbe freed later. Otherwise, the kmalloc area pointed to by param-\u003estring\nwill be leaked as shown below:\n\nunreferenced object 0xffff888118c46d20 (size 8):\n  comm \"new_name\", pid 12109, jiffies 4295580214\n  hex dump (first 8 bytes):\n    61 6e 79 00 38 c9 5c 7e                          any.8.\\~\n  backtrace (crc e1b7f876):\n    [\u003c00000000c6848ac7\u003e] kmemleak_alloc+0x4b/0x80\n    [\u003c00000000de9f7d00\u003e] __kmalloc_node_track_caller_noprof+0x36e/0x4a0\n    [\u003c000000003e29b886\u003e] memdup_user+0x32/0xa0\n    [\u003c0000000007248326\u003e] strndup_user+0x46/0x60\n    [\u003c0000000035b3dd29\u003e] __x64_sys_fsconfig+0x368/0x3d0\n    [\u003c0000000018657927\u003e] x64_sys_call+0xff/0x9f0\n    [\u003c00000000c0cabc95\u003e] do_syscall_64+0x3b/0xc0\n    [\u003c000000002f331597\u003e] entry_SYSCALL_64_after_hwframe+0x4b/0x53",
  "id": "GHSA-936g-6jg3-mgp5",
  "modified": "2024-11-22T21:32:12Z",
  "published": "2024-11-07T12:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50165"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1f97c03f43fadc407de5b5cb01c07755053e1c22"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5d7a0a426540319327309035509cb768a2f5c2c4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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