Vulnerability-Lookup

alsa-2025:21232

Vulnerability from osv_almalinux

Published

2025-11-13 00:00

Modified

2025-11-20 10:07

Summary

Important: container-tools:rhel8 security update

Details

The container-tools module contains tools for working with containers, notably podman, buildah, skopeo, and runc.

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.

JSON

To clipboard

{
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  "details": "The container-tools module contains tools for working with containers, notably podman, buildah, skopeo, and runc.  \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-2025:21232",
  "modified": "2025-11-20T10:07:52Z",
  "published": "2025-11-13T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2025:21232"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-31133"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-52565"
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    {
      "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/8/ALSA-2025-21232.html"
    }
  ],
  "related": [
    "CVE-2025-31133",
    "CVE-2025-52565",
    "CVE-2025-52881"
  ],
  "summary": "Important: container-tools:rhel8 security update"
}

CVE-2025-31133 (GCVE-0-2025-31133)

Vulnerability from cvelistv5 – Published: 2025-11-06 18:47 – Updated: 2025-11-06 19:22

Title

runc container escape via "masked path" abuse due to mount race conditions

Summary

runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7 and below, 1.3.0-rc.1 through 1.3.1, 1.4.0-rc.1 and 1.4.0-rc.2 files, runc would not perform sufficient verification that the source of the bind-mount (i.e., the container's /dev/null) was actually a real /dev/null inode when using the container's /dev/null to mask. This exposes two methods of attack: an arbitrary mount gadget, leading to host information disclosure, host denial of service, container escape, or a bypassing of maskedPaths. This issue is fixed in versions 1.2.8, 1.3.3 and 1.4.0-rc.3.

Severity ?

7.3 (High)


                        
                          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

CWE

CWE-61 - UNIX Symbolic Link (Symlink) Following
CWE-363 - Race Condition Enabling Link Following

Assigner

GitHub_M

References

URL

Tags

	https://github.com/opencontainers/runc/security/a…	x_refsource_CONFIRM
	https://github.com/opencontainers/runc/commit/1a3…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/5d7…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/847…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/db1…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	opencontainers	runc	Affected: < 1.2.8 Affected: >= 1.3.0-rc.1, < 1.3.3 Affected: >= 1.4.0-rc.1, <= 1.4.0-rc.3

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CVE-2025-52881 (GCVE-0-2025-52881)

Vulnerability from cvelistv5 – Published: 2025-11-06 20:23 – Updated: 2025-11-06 21:07

Title

runc: LSM labels can be bypassed with malicious config using dummy procfs files

Summary

runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7, 1.3.2 and 1.4.0-rc.2, an attacker can trick runc into misdirecting writes to /proc to other procfs files through the use of a racing container with shared mounts (we have also verified this attack is possible to exploit using a standard Dockerfile with docker buildx build as that also permits triggering parallel execution of containers with custom shared mounts configured). This redirect could be through symbolic links in a tmpfs or theoretically other methods such as regular bind-mounts. While similar, the mitigation applied for the related CVE, CVE-2019-19921, was fairly limited and effectively only caused runc to verify that when LSM labels are written they are actually procfs files. This issue is fixed in versions 1.2.8, 1.3.3, and 1.4.0-rc.3.

Severity ?

7.3 (High)


                        
                          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

CWE

CWE-61 - UNIX Symbolic Link (Symlink) Following
CWE-363 - Race Condition Enabling Link Following

Assigner

GitHub_M

References

URL

Tags

	https://github.com/opencontainers/runc/security/a…	x_refsource_CONFIRM
	https://github.com/opencontainers/runc/security/a…	x_refsource_MISC
	https://github.com/opencontainers/runc/security/a…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/ff9…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/ff6…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/ed6…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/db1…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/d61…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/d40…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/b3d…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/77d…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/778…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/6fc…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/4b3…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/44a…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/435…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/3f9…	x_refsource_MISC
	https://github.com/opencontainers/runc/blob/v1.4.…	x_refsource_MISC
	http://github.com/opencontainers/runc/commit/a413…	x_refsource_MISC
	http://github.com/opencontainers/runc/commit/fdcc…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	opencontainers	runc	Affected: <= 1.2.7, < 1.2.8 Affected: <= 1.3.2, < 1.3.3 Affected: <= 1.4.0-rc.2, < 1.4.0-rc.3

Show details on NVD website

JSON

To clipboard

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CVE-2025-52565 (GCVE-0-2025-52565)

Vulnerability from cvelistv5 – Published: 2025-11-06 20:02 – Updated: 2025-11-06 21:32

Title

container escape due to /dev/console mount and related races

Summary

runc is a CLI tool for spawning and running containers according to the OCI specification. Versions 1.0.0-rc3 through 1.2.7, 1.3.0-rc.1 through 1.3.2, and 1.4.0-rc.1 through 1.4.0-rc.2, due to insufficient checks when bind-mounting `/dev/pts/$n` to `/dev/console` inside the container, an attacker can trick runc into bind-mounting paths which would normally be made read-only or be masked onto a path that the attacker can write to. This attack is very similar in concept and application to CVE-2025-31133, except that it attacks a similar vulnerability in a different target (namely, the bind-mount of `/dev/pts/$n` to `/dev/console` as configured for all containers that allocate a console). This happens after `pivot_root(2)`, so this cannot be used to write to host files directly -- however, as with CVE-2025-31133, this can load to denial of service of the host or a container breakout by providing the attacker with a writable copy of `/proc/sysrq-trigger` or `/proc/sys/kernel/core_pattern` (respectively). This issue is fixed in versions 1.2.8, 1.3.3 and 1.4.0-rc.3.

Severity ?

8.4 (High)


                        
                          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

CWE

CWE-61 - UNIX Symbolic Link (Symlink) Following
CWE-363 - Race Condition Enabling Link Following

Assigner

GitHub_M

References

URL

Tags

	https://github.com/opencontainers/runc/security/a…	x_refsource_CONFIRM
	https://github.com/opencontainers/runc/commit/01d…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/398…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/531…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/9be…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/aee…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/db1…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/de8…	x_refsource_MISC
	https://github.com/opencontainers/runc/commit/ff9…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	opencontainers	runc	Affected: >= 1.0.0-rc3, < 1.2.8 Affected: >= 1.3.0-rc.1, < 1.3.3 Affected: >= 1.4.0-rc.1, < 1.4.0-rc.3

Show details on NVD website

JSON

To clipboard

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        "dateUpdated": "2025-11-06T20:02:58.513Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/opencontainers/runc/security/advisories/GHSA-qw9x-cqr3-wc7r",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/opencontainers/runc/security/advisories/GHSA-qw9x-cqr3-wc7r"
        },
        {
          "name": "https://github.com/opencontainers/runc/commit/01de9d65dc72f67b256ef03f9bfb795a2bf143b4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/opencontainers/runc/commit/01de9d65dc72f67b256ef03f9bfb795a2bf143b4"
        },
        {
          "name": "https://github.com/opencontainers/runc/commit/398955bccb7f20565c224a3064d331c19e422398",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/opencontainers/runc/commit/398955bccb7f20565c224a3064d331c19e422398"
        },
        {
          "name": "https://github.com/opencontainers/runc/commit/531ef794e4ecd628006a865ad334a048ee2b4b2e",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/opencontainers/runc/commit/531ef794e4ecd628006a865ad334a048ee2b4b2e"
        },
        {
          "name": "https://github.com/opencontainers/runc/commit/9be1dbf4ac67d9840a043ebd2df5c68f36705d1d",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/opencontainers/runc/commit/9be1dbf4ac67d9840a043ebd2df5c68f36705d1d"
        },
        {
          "name": "https://github.com/opencontainers/runc/commit/aee7d3fe355dd02939d44155e308ea0052e0d53a",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/opencontainers/runc/commit/aee7d3fe355dd02939d44155e308ea0052e0d53a"
        },
        {
          "name": "https://github.com/opencontainers/runc/commit/db19bbed5348847da433faa9d69e9f90192bfa64",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/opencontainers/runc/commit/db19bbed5348847da433faa9d69e9f90192bfa64"
        },
        {
          "name": "https://github.com/opencontainers/runc/commit/de87203e625cd7a27141fb5f2ad00a320c69c5e8",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/opencontainers/runc/commit/de87203e625cd7a27141fb5f2ad00a320c69c5e8"
        },
        {
          "name": "https://github.com/opencontainers/runc/commit/ff94f9991bd32076c871ef0ad8bc1b763458e480",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/opencontainers/runc/commit/ff94f9991bd32076c871ef0ad8bc1b763458e480"
        }
      ],
      "source": {
        "advisory": "GHSA-qw9x-cqr3-wc7r",
        "discovery": "UNKNOWN"
      },
      "title": "container escape due to /dev/console mount and related races"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-52565",
    "datePublished": "2025-11-06T20:02:58.513Z",
    "dateReserved": "2025-06-18T03:55:52.036Z",
    "dateUpdated": "2025-11-06T21:32:19.129Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Tags

Taxonomy of the tags.

All sightings related to this event Export sightings related to this event

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

alsa-2025:21232

Vulnerability from osv_almalinux

CVE-2025-31133 (GCVE-0-2025-31133)

CVE-2025-52881 (GCVE-0-2025-52881)

CVE-2025-52565 (GCVE-0-2025-52565)

Tags

Sightings

Nomenclature