ghsa-87j5-gppq-mq6h
Vulnerability from github
Published
2022-05-24 16:50
Modified
2025-10-22 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 before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of a ptrace relationship as privileged, which is exploitable through (for example) Polkit's pkexec helper with PTRACE_TRACEME.

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{
  "affected": [],
  "aliases": [
    "CVE-2019-13272"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-269"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-07-17T13:15:00Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of a ptrace relationship as privileged, which is exploitable through (for example) Polkit\u0027s pkexec helper with PTRACE_TRACEME.",
  "id": "GHSA-87j5-gppq-mq6h",
  "modified": "2025-10-22T00:31:43Z",
  "published": "2022-05-24T16:50:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-13272"
    },
    {
      "type": "WEB",
      "url": "https://github.com/torvalds/linux/commit/6994eefb0053799d2e07cd140df6c2ea106c41ee"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2019/dsa-4484"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-13272"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4118-1"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4117-1"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4095-1"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4094-1"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4093-1"
    },
    {
      "type": "WEB",
      "url": "https://support.f5.com/csp/article/K91025336?utm_source=f5support\u0026amp;utm_medium=RSS"
    },
    {
      "type": "WEB",
      "url": "https://support.f5.com/csp/article/K91025336?utm_source=f5support\u0026amp%3Butm_medium=RSS"
    },
    {
      "type": "WEB",
      "url": "https://support.f5.com/csp/article/K91025336"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20190806-0001"
    },
    {
      "type": "WEB",
      "url": "https://seclists.org/bugtraq/2019/Jul/33"
    },
    {
      "type": "WEB",
      "url": "https://seclists.org/bugtraq/2019/Jul/30"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OGRK5LYWBJ4E4SRI4DKX367NHYSI3VOH"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGRK5LYWBJ4E4SRI4DKX367NHYSI3VOH"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2019/07/msg00023.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2019/07/msg00022.html"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6994eefb0053799d2e07cd140df6c2ea106c41ee"
    },
    {
      "type": "WEB",
      "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.17"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.suse.com/show_bug.cgi?id=1140671"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1730895"
    },
    {
      "type": "WEB",
      "url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1903"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:2809"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:2411"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:2405"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/153663/Linux-PTRACE_TRACEME-Broken-Permission-Object-Lifetime-Handling.html"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/153702/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/154957/Linux-Polkit-pkexec-Helper-PTRACE_TRACEME-Local-Root.html"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/156929/Linux-PTRACE_TRACEME-Local-Root.html"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/165051/Linux-Kernel-5.1.x-PTRACE_TRACEME-pkexec-Local-Privilege-Escalation.html"
    }
  ],
  "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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