Vulnerability-Lookup

OESA-2025-2812 (CVE-2025-12748)

Vulnerability from osv_openeuler – Published: 2025-12-12 11:09 – Updated: 2026-08-06 11:09 – Source website

Summary

libvirt security update

Details

Libvirt is a C toolkit to interact with the virtualization capabilities of recent versions of Linux (and other OSes). The main package includes the libvirtd server exporting the virtualization support.

Security Fix(es):

A flaw was discovered in libvirt in the XML file processing. More specifically, the parsing of user provided XML files was performed before the ACL checks. A malicious user with limited permissions could exploit this flaw by submitting a specially crafted XML file, causing libvirt to allocate too much memory on the host. The excessive memory consumption could lead to a libvirt process crash on the host, resulting in a denial-of-service condition.(CVE-2025-12748)

Severity

5.5 (Medium)


                    
                      CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-12748	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "libvirt-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-admin-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-bash-completion-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-client-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-config-network-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-config-nwfilter-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-interface-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-network-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-nodedev-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-nwfilter-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-qemu-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-secret-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-core-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-disk-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-gluster-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-iscsi-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-iscsi-direct-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-logical-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-mpath-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-rbd-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-driver-storage-scsi-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-kvm-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-daemon-qemu-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-debuginfo-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-debugsource-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-devel-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-docs-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-libs-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-lock-sanlock-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-nss-6.2.0-26.oe2003sp4.aarch64.rpm",
          "libvirt-wireshark-6.2.0-26.oe2003sp4.aarch64.rpm"
        ],
        "src": [
          "libvirt-6.2.0-26.oe2003sp4.src.rpm"
        ],
        "x86_64": [
          "libvirt-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-admin-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-bash-completion-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-client-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-config-network-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-config-nwfilter-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-interface-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-network-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-nodedev-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-nwfilter-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-qemu-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-secret-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-core-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-disk-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-gluster-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-iscsi-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-iscsi-direct-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-logical-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-mpath-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-rbd-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-driver-storage-scsi-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-kvm-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-daemon-qemu-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-debuginfo-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-debugsource-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-devel-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-docs-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-libs-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-lock-sanlock-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-nss-6.2.0-26.oe2003sp4.x86_64.rpm",
          "libvirt-wireshark-6.2.0-26.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "libvirt",
        "purl": "pkg:rpm/openEuler/libvirt\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.2.0-26.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "Libvirt is a C toolkit to interact with the virtualization capabilities of recent versions of Linux (and other OSes). The main package includes the libvirtd server exporting the virtualization support.\r\n\r\nSecurity Fix(es):\n\nA flaw was discovered in libvirt in the XML file processing. More specifically, the parsing of user provided XML files was performed before the ACL checks. A malicious user with limited permissions could exploit this flaw by submitting a specially crafted XML file, causing libvirt to allocate too much memory on the host. The excessive memory consumption could lead to a libvirt process crash on the host, resulting in a denial-of-service condition.(CVE-2025-12748)",
  "id": "OESA-2025-2812",
  "modified": "2026-08-06T11:09:56Z",
  "published": "2025-12-12T11:09:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2812"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-12748"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "libvirt security update",
  "upstream": [
    "CVE-2025-12748"
  ]
}

CVE-2025-12748 (GCVE-0-2025-12748)

Vulnerability from cvelistv5 – Published: 2025-11-11 19:49 – Updated: 2026-06-29 23:29

Title

Libvirt: denial of service in xml parsing

Summary

Severity

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-11-12 14:40 UTC

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

redhat redhat root

References

4 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:18326	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:18748	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2025-12748	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2413801	issue-trackingx_refsource_REDHAT

Impacted products

6 products

Vendor	Product	Version
		Affected: 0 , ≤ 11.9.0 (semver)
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:11.10.0-12.el10_2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:11.10.0-12.el9_8 , < * (rpm) cpe:/a:redhat:enterprise_linux:9::appstream cpe:/a:redhat:enterprise_linux:9::crb
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8

Date Public

2025-11-07 00:00

Credits

Red Hat would like to thank Artem Mukhin and Святослав Терешин for reporting this issue.

Show details on NVD website

JSON

To clipboard

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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.

Detection rules are retrieved from Rulezet.

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.

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.