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CVE-2026-26104 (GCVE-0-2026-26104)

Vulnerability from cvelistv5 – Published: 2026-02-25 10:51 – Updated: 2026-03-25 18:52
VLAI
Title
Udisks: missing authorization check allows unprivileged users to back up luks headers via udisks d-bus api
Summary
A flaw was found in the udisks storage management daemon that allows unprivileged users to back up LUKS encryption headers without authorization. The issue occurs because a privileged D-Bus method responsible for exporting encryption metadata does not perform a policy check. As a result, sensitive cryptographic metadata can be read and written to attacker-controlled locations. This weakens the confidentiality guarantees of encrypted storage volumes.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-25 20:49 UTC
CWE
References
Impacted products
Vendor Product Version CPE status
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:2.10.90-6.el10_1.1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.1
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:2.10.90-5.el10_0.2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux_eus:10.0
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
Create a notification for this product.
Date Public
2026-02-25 06:00
Show details on NVD website

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              "name": "RHSA-2026:3476",
              "tags": [
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              "url": "https://access.redhat.com/errata/RHSA-2026:3476"
            },
            {
              "name": "RHSA-2026:5831",
              "tags": [
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              "url": "https://access.redhat.com/errata/RHSA-2026:5831"
            },
            {
              "tags": [
                "vdb-entry",
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              "url": "https://access.redhat.com/security/cve/CVE-2026-26104"
            },
            {
              "name": "RHBZ#2433717",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2433717"
            },
            {
              "url": "https://github.com/storaged-project/udisks/security/advisories/GHSA-fcvx-497g-6xmw"
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          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-01-28T06:19:50.721Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2026-02-25T06:00:00.000Z",
              "value": "Made public."
            }
          ],
          "title": "Udisks: missing authorization check allows unprivileged users to back up luks headers via udisks d-bus api",
          "workarounds": [
            {
              "lang": "en",
              "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to a widespread installation base, or stability."
            }
          ],
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-862: Missing Authorization"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-26104",
        "datePublished": "2026-02-25T10:51:15.204Z",
        "dateReserved": "2026-02-11T12:48:26.436Z",
        "dateUpdated": "2026-03-25T18:52:14.488Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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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Detection rules are retrieved from Rulezet.

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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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