USN-7851-1 (UBUNTU-CVE-2025-31133)
Vulnerability from osv_ubuntu – Published: 2025-11-04 15:36 – Updated: 2026-02-10 04:50 – Source website
VLAI
Summary
runc-app, runc-stable vulnerabilities
Details
Lei Wang and Li Fubang discovered that runC incorrectly handled masked paths. An attacker could possibly replace a container's /dev/null with a symlink to some other procfs file and possibly escape a container. (CVE-2025-31133)
Lei Wang and Li Fubang discovered that runC incorrectly handled the /dev/console bind-mounts. An attacker could potentially exploit this issue to build-mount a symlink and escape a container. (CVE-2025-52565)
Li Fubang and Tõnis Tiigi discovered that the fix for CVE-2019-16884 was incomplete. An attacker could possibly use this issue to cause a denial of service or escape the container. (CVE-2025-52881)
References
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2025-31133",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2025-52565",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2025-52881",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:22.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "runc",
"binary_version": "1.3.3-0ubuntu1~22.04.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "runc-app",
"purl": "pkg:deb/ubuntu/runc-app@1.3.3-0ubuntu1~22.04.2?arch=source\u0026distro=jammy"
},
"ranges": [
{
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{
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},
{
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}
],
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}
],
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"1.1.12-0ubuntu2~22.04.1",
"1.2.5-0ubuntu1~22.04.1",
"1.3.0-0ubuntu2~22.04.1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2025-31133",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2025-52565",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2025-52881",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:24.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "runc",
"binary_version": "1.3.3-0ubuntu1~24.04.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "runc-app",
"purl": "pkg:deb/ubuntu/runc-app@1.3.3-0ubuntu1~24.04.2?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.3-0ubuntu1~24.04.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.1.10-0ubuntu1",
"1.1.12-0ubuntu1",
"1.1.12-0ubuntu2",
"1.1.12-0ubuntu3",
"1.1.12-0ubuntu3.1",
"1.2.5-0ubuntu1~24.04.1",
"1.3.0-0ubuntu2~24.04.1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2025-31133",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2025-52565",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2025-52881",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:25.10"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "runc",
"binary_version": "1.3.3-0ubuntu1~25.10.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "runc-app",
"purl": "pkg:deb/ubuntu/runc-app@1.3.3-0ubuntu1~25.10.2?arch=source\u0026distro=questing"
},
"ranges": [
{
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},
{
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],
"type": "ECOSYSTEM"
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],
"versions": [
"1.2.5-0ubuntu1",
"1.3.0-0ubuntu1",
"1.3.0-0ubuntu2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2025-31133",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2025-52565",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2025-52881",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:25.10"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "runc-stable",
"binary_version": "1.3.3-0ubuntu1~25.10.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "runc-stable",
"purl": "pkg:deb/ubuntu/runc-stable@1.3.3-0ubuntu1~25.10.2?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.3-0ubuntu1~25.10.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.3.0-0ubuntu1"
]
}
],
"aliases": [],
"details": "Lei Wang and Li Fubang discovered that runC incorrectly handled masked\npaths. An attacker could possibly replace a container\u0027s /dev/null\nwith a symlink to some other procfs file and possibly escape a container.\n(CVE-2025-31133)\n\nLei Wang and Li Fubang discovered that runC incorrectly handled the\n/dev/console bind-mounts. An attacker could potentially exploit this issue\nto build-mount a symlink and escape a container. (CVE-2025-52565)\n\nLi Fubang and T\u00f5nis Tiigi discovered that the fix for CVE-2019-16884 was\nincomplete. An attacker could possibly use this issue to cause a denial of\nservice or escape the container. (CVE-2025-52881)",
"id": "USN-7851-1",
"modified": "2026-02-10T04:50:20Z",
"published": "2025-11-04T15:36:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7851-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-31133"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-52565"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-52881"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "runc-app, runc-stable vulnerabilities",
"upstream": [
"UBUNTU-CVE-2025-31133",
"UBUNTU-CVE-2025-52565",
"UBUNTU-CVE-2025-52881"
]
}
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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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