ghsa-v45j-q282-89r5
Vulnerability from github
Published
2025-03-11 00:31
Modified
2025-03-11 00:31
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:

bpf: Fix potential array overflow in bpf_trampoline_get_progs()

The cnt value in the 'cnt >= BPF_MAX_TRAMP_PROGS' check does not include BPF_TRAMP_MODIFY_RETURN bpf programs, so the number of the attached BPF_TRAMP_MODIFY_RETURN bpf programs in a trampoline can exceed BPF_MAX_TRAMP_PROGS.

When this happens, the assignment '*progs++ = aux->prog' in bpf_trampoline_get_progs() will cause progs array overflow as the progs field in the bpf_tramp_progs struct can only hold at most BPF_MAX_TRAMP_PROGS bpf programs.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49548"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-129"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:30Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix potential array overflow in bpf_trampoline_get_progs()\n\nThe cnt value in the \u0027cnt \u003e= BPF_MAX_TRAMP_PROGS\u0027 check does not\ninclude BPF_TRAMP_MODIFY_RETURN bpf programs, so the number of\nthe attached BPF_TRAMP_MODIFY_RETURN bpf programs in a trampoline\ncan exceed BPF_MAX_TRAMP_PROGS.\n\nWhen this happens, the assignment \u0027*progs++ = aux-\u003eprog\u0027 in\nbpf_trampoline_get_progs() will cause progs array overflow as the\nprogs field in the bpf_tramp_progs struct can only hold at most\nBPF_MAX_TRAMP_PROGS bpf programs.",
  "id": "GHSA-v45j-q282-89r5",
  "modified": "2025-03-11T00:31:48Z",
  "published": "2025-03-11T00:31:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49548"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/32c4559c61652f24c9fdd5440342196fe37453bc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f8897bcc20b9ae44758e0572538d741ab66f0dc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7f845de2863334bed4f362e95853f5e7bc323737"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a2aa95b71c9bbec793b5c5fa50f0a80d882b3e8d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e36452d5da6325df7c10cffc60a9e68d21e2606d"
    }
  ],
  "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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