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
To clipboard 

{
  "affected": [
    {
      "database_specific": {
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              "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"
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      },
      "package": {
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        "name": "runc-app",
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      },
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                  "type": "CVSS_V4"
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              "id": "CVE-2025-52565",
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              "id": "CVE-2025-52881",
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      },
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      ],
      "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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