CVE-2019-13272 (GCVE-0-2019-13272)

Vulnerability from cvelistv5 – Published: 2019-07-17 12:32 – Updated: 2025-10-21 23:45
VLAI CISA KEVIntel
Summary
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. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
http://packetstormsecurity.com/files/153663/Linux… x_refsource_MISC
https://bugs.chromium.org/p/project-zero/issues/d… x_refsource_MISC
https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan… x_refsource_MISC
https://github.com/torvalds/linux/commit/6994eefb… x_refsource_MISC
https://git.kernel.org/cgit/linux/kernel/git/torv… x_refsource_MISC
https://bugzilla.suse.com/show_bug.cgi?id=1140671 x_refsource_CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=1730895 x_refsource_CONFIRM
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://www.debian.org/security/2019/dsa-4484 vendor-advisoryx_refsource_DEBIAN
https://seclists.org/bugtraq/2019/Jul/30 mailing-listx_refsource_BUGTRAQ
https://seclists.org/bugtraq/2019/Jul/33 mailing-listx_refsource_BUGTRAQ
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
http://packetstormsecurity.com/files/153702/Slack… x_refsource_MISC
https://security.netapp.com/advisory/ntap-2019080… x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2019:2405 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:2411 vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/4093-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4094-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4095-1/ vendor-advisoryx_refsource_UBUNTU
http://packetstormsecurity.com/files/154245/Kerne… x_refsource_MISC
https://support.f5.com/csp/article/K91025336 x_refsource_CONFIRM
https://usn.ubuntu.com/4117-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4118-1/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2019:2809 vendor-advisoryx_refsource_REDHAT
https://support.f5.com/csp/article/K91025336?utm_… x_refsource_CONFIRM
http://packetstormsecurity.com/files/154957/Linux… x_refsource_MISC
http://packetstormsecurity.com/files/156929/Linux… x_refsource_MISC
http://packetstormsecurity.com/files/165051/Linux… x_refsource_MISC
https://www.cisa.gov/known-exploited-vulnerabilit… government-resource
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 5784f349-7a78-4a3d-97ed-920bbd67f6de

Vulnerability ID: CVE-2019-13272

Status: Confirmed

Status Updated: 2021-12-10 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2021-12-10
Asserted: 2021-12-10
Scope
Notes: KEV entry: Linux Kernel Improper Privilege Management Vulnerability | Affected: Linux / Kernel | Description: Kernel/ptrace.c in Linux kernel mishandles contains an improper privilege management vulnerability that allows local users to obtain root access. | Required action: Apply updates per vendor instructions. | Due date: 2022-06-10 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2019-13272
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-269
Feed CISA Known Exploited Vulnerabilities Catalog
Product Kernel
Due Date 2022-06-10
Date Added 2021-12-10
Vendorproject Linux
Vulnerabilityname Linux Kernel Improper Privilege Management Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 13:25 UTC | Updated: 2026-02-06 07:53 UTC
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 0dee4231-9cc1-445f-ab95-7c31b10b161a

Vulnerability ID: CVE-2019-13272

Status: Confirmed

Status Updated: 2021-12-10 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2021-12-10
Asserted: 2021-12-10
Scope
Notes: KEVIntel entry: 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... | Affected: Linux / kernel | CVSS: 7.8 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title 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...
Vendor Linux
Product kernel
Added Date 2021-12-10T00:00:00.000Z
Cvss Score 7.8
Epss Score None
Cvss Severity HIGH
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-06-23 11:13 UTC | Updated: 2026-06-23 11:13 UTC
Show details on NVD website
To clipboard 

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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-06-28T07:24:46+00:00",
      "cve": "CVE-2019-13272",
      "id": "CVE-2019-13272",
      "initial_release_date": "2019-07-16T00:00:00+00:00",
      "product_status:fixed": "180",
      "product_status:known_not_affected": "57",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: broken permission and object lifetime handling for PTRACE_TRACEME",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-13272.json",
      "version": "3"
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      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.