alsa-2025:20957
Vulnerability from osv_almalinux
Published
2025-11-11 00:00
Modified
2025-11-19 09:31
Summary
Important: runc security update
Details

The runC tool is a lightweight, portable implementation of the Open Container Format (OCF) that provides container runtime.

Security Fix(es):

  • runc: container escape via 'masked path' abuse due to mount race conditions (CVE-2025-31133)
  • runc: container escape with malicious config due to /dev/console mount and related races (CVE-2025-52565)
  • runc: container escape and denial of service due to arbitrary write gadgets and procfs write redirects (CVE-2025-52881)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "runc"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4:1.3.0-4.el9_7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The runC tool is a lightweight, portable implementation of the Open Container Format (OCF) that provides container runtime.  \n\nSecurity Fix(es):  \n\n  * runc: container escape via \u0027masked path\u0027 abuse due to mount race conditions (CVE-2025-31133)\n  * runc: container escape with malicious config due to /dev/console mount and related races (CVE-2025-52565)\n  * runc: container escape and denial of service due to arbitrary write gadgets and procfs write redirects (CVE-2025-52881)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2025:20957",
  "modified": "2025-11-19T09:31:22Z",
  "published": "2025-11-11T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2025:20957"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-31133"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-52565"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-52881"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2404705"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2404708"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2404715"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/9/ALSA-2025-20957.html"
    }
  ],
  "related": [
    "CVE-2025-31133",
    "CVE-2025-52565",
    "CVE-2025-52881"
  ],
  "summary": "Important: runc security update"
}


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Sightings

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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.
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  • 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.