ghsa-9rf2-394m-48f4
Vulnerability from github
Published
2024-02-28 09:30
Modified
2024-11-07 18:31
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook

The commit 1879445dfa7b ("perf/core: Set event's default ::overflow_handler()") set a default event->overflow_handler in perf_event_alloc(), and replace the check event->overflow_handler with is_default_overflow_handler(), but one is missing.

Currently, the bp->overflow_handler can not be NULL. As a result, enable_single_step() is always not invoked.

Comments from Zhen Lei:

https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210207105934.2001-1-thunder.leizhen@huawei.com/

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47006"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-28T09:15:38Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nARM: 9064/1: hw_breakpoint: Do not directly check the event\u0027s overflow_handler hook\n\nThe commit 1879445dfa7b (\"perf/core: Set event\u0027s default\n::overflow_handler()\") set a default event-\u003eoverflow_handler in\nperf_event_alloc(), and replace the check event-\u003eoverflow_handler with\nis_default_overflow_handler(), but one is missing.\n\nCurrently, the bp-\u003eoverflow_handler can not be NULL. As a result,\nenable_single_step() is always not invoked.\n\nComments from Zhen Lei:\n\n https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210207105934.2001-1-thunder.leizhen@huawei.com/",
  "id": "GHSA-9rf2-394m-48f4",
  "modified": "2024-11-07T18:31:19Z",
  "published": "2024-02-28T09:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47006"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ed8832aeaa9a37b0fc386bb72ff604352567c80"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/555a70f7fff03bd669123487905c47ae27dbdaac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/630146203108bf6b8934eec0dfdb3e46dcb917de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7eeacc6728c5478e3c01bc82a1f08958eaa12366"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a506bd5756290821a4314f502b4bafc2afcf5260"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a9938d6d78a238d6ab8de57a4d3dcf77adceb9bb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dabe299425b1a53a69461fed7ac8922ea6733a25"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed1f67465327cec4457bb988775245b199da86e6"
    }
  ],
  "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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