GHSA-87J5-GPPQ-MQ6H
Vulnerability from github – Published: 2022-05-24 16:50 – Updated: 2025-10-22 00:31
VLAI
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.
Severity
7.8 (High)
{
"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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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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