ghsa-wxmm-482m-cm8h
Vulnerability from github
Published
2022-05-24 17:17
Modified
2022-05-24 17:17
Details

A signal access-control issue was discovered in the Linux kernel before 5.6.5, aka CID-7395ea4e65c2. Because exec_id in include/linux/sched.h is only 32 bits, an integer overflow can interfere with a do_notify_parent protection mechanism. A child process can send an arbitrary signal to a parent process in a different security domain. Exploitation limitations include the amount of elapsed time before an integer overflow occurs, and the lack of scenarios where signals to a parent process present a substantial operational threat.

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{
  "affected": [],
  "aliases": [
    "CVE-2020-12826"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-05-12T19:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A signal access-control issue was discovered in the Linux kernel before 5.6.5, aka CID-7395ea4e65c2. Because exec_id in include/linux/sched.h is only 32 bits, an integer overflow can interfere with a do_notify_parent protection mechanism. A child process can send an arbitrary signal to a parent process in a different security domain. Exploitation limitations include the amount of elapsed time before an integer overflow occurs, and the lack of scenarios where signals to a parent process present a substantial operational threat.",
  "id": "GHSA-wxmm-482m-cm8h",
  "modified": "2022-05-24T17:17:41Z",
  "published": "2022-05-24T17:17:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12826"
    },
    {
      "type": "WEB",
      "url": "https://github.com/torvalds/linux/commit/7395ea4e65c2a00d23185a3f63ad315756ba9cef"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1822077"
    },
    {
      "type": "WEB",
      "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.5"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.openwall.net/linux-kernel/2020/03/24/1803"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20200608-0001"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4367-1"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4369-1"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4391-1"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/kernel-hardening/2020/03/25/1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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