CVE-2009-1895 (GCVE-0-2009-1895)
Vulnerability from cvelistv5 – Published: 2009-07-16 15:00 – Updated: 2024-08-07 05:27
VLAI
EPSS
VEX
Summary
The personality subsystem in the Linux kernel before 2.6.31-rc3 has a PER_CLEAR_ON_SETID setting that does not clear the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO flags when executing a setuid or setgid program, which makes it easier for local users to leverage the details of memory usage to (1) conduct NULL pointer dereference attacks, (2) bypass the mmap_min_addr protection mechanism, or (3) defeat address space layout randomization (ASLR).
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
35 references
Date Public
2009-07-13 00:00
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"tags": [
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],
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},
{
"source": "secalert@redhat.com",
"tags": [
"Third Party Advisory"
],
"url": "http://www.ubuntu.com/usn/usn-807-1"
},
{
"source": "secalert@redhat.com",
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],
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},
{
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],
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},
{
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],
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},
{
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],
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},
{
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},
{
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],
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},
{
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},
{
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},
{
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},
{
"source": "secalert@redhat.com",
"tags": [
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],
"url": "https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00166.html"
},
{
"source": "secalert@redhat.com",
"tags": [
"Third Party Advisory"
],
"url": "https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00223.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "http://blog.cr0.org/2009/06/bypassing-linux-null-pointer.html"
},
{
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},
{
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],
"url": "http://patchwork.kernel.org/patch/32598/"
},
{
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"tags": [
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],
"url": "http://secunia.com/advisories/35801"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://secunia.com/advisories/36045"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://secunia.com/advisories/36051"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://secunia.com/advisories/36054"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://secunia.com/advisories/36116"
},
{
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"tags": [
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],
"url": "http://secunia.com/advisories/36131"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://secunia.com/advisories/36759"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://secunia.com/advisories/37471"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://wiki.rpath.com/Advisories:rPSA-2009-0111"
},
{
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"tags": [
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],
"url": "http://www.debian.org/security/2009/dsa-1844"
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{
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"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2011:051"
},
{
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},
{
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},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
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],
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}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-16"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2025-11-21T13:11:21+00:00",
"cve": "CVE-2009-1895",
"id": "CVE-2009-1895",
"initial_release_date": "2009-06-26T00:00:00+00:00",
"product_status:fixed": "632",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: personality: fix PER_CLEAR_ON_SETID",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2009/cve-2009-1895.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-07-26T01:57:42Z",
"cve": "CVE-2009-1895",
"id": "CVE-2009-1895",
"initial_release_date": "2023-02-15T06:03:38Z",
"product_status:known_not_affected": "495",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2009-1895",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2009-1895.json",
"version": "13"
}
}
}
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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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