FKIE_CVE-2026-41054

Vulnerability from fkie_nvd - Published: 2026-05-20 10:16 - Updated: 2026-06-17 10:46
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In `src/havegecmd.c`, the `socket_handler` function performs a credential check on the abstract UNIX socket (`\0/sys/entropy/haveged`). However, while it detects if the connecting user is not root (`cred.uid != 0`) and prepares a negative acknowledgement (`ASCII_NAK`), it **fails to stop execution**. The code proceeds to the `switch` statement, allowing any local unprivileged user to execute privileged commands such as `MAGIC_CHROOT`.
References
meissner@suse.dehttps://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-41054
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/05/19/3
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/05/19/4
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/05/19/5
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/05/20/1
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/05/21/17
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/05/22/1
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2026/06/msg00005.html
Impacted products
Vendor Product Version
To clipboard 

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          "product": "SUSE Linux Enterprise Micro 5.5",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "libhavege2",
          "product": "SUSE Linux Enterprise Micro 5.5",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged",
          "product": "SUSE Linux Enterprise Server 15 SP4-LTSS",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged-devel",
          "product": "SUSE Linux Enterprise Server 15 SP4-LTSS",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "libhavege2",
          "product": "SUSE Linux Enterprise Server 15 SP4-LTSS",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged",
          "product": "SUSE Linux Enterprise Server 15 SP5-LTSS",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged-devel",
          "product": "SUSE Linux Enterprise Server 15 SP5-LTSS",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "libhavege2",
          "product": "SUSE Linux Enterprise Server 15 SP5-LTSS",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged",
          "product": "SUSE Linux Enterprise Server 15 SP6-LTSS",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150600.11.6.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged-devel",
          "product": "SUSE Linux Enterprise Server 15 SP6-LTSS",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150600.11.6.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "libhavege2",
          "product": "SUSE Linux Enterprise Server 15 SP6-LTSS",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150600.11.6.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged",
          "product": "SUSE Linux Enterprise Server for SAP Applications 15 SP4",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged-devel",
          "product": "SUSE Linux Enterprise Server for SAP Applications 15 SP4",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "libhavege2",
          "product": "SUSE Linux Enterprise Server for SAP Applications 15 SP4",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged",
          "product": "SUSE Linux Enterprise Server for SAP Applications 15 SP5",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged-devel",
          "product": "SUSE Linux Enterprise Server for SAP Applications 15 SP5",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "libhavege2",
          "product": "SUSE Linux Enterprise Server for SAP Applications 15 SP5",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged",
          "product": "SUSE Linux Enterprise Server for SAP Applications 15 SP6",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150600.11.6.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged-devel",
          "product": "SUSE Linux Enterprise Server for SAP Applications 15 SP6",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150600.11.6.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "libhavege2",
          "product": "SUSE Linux Enterprise Server for SAP Applications 15 SP6",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150600.11.6.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged",
          "product": "SUSE Manager Proxy LTS 4.3",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged-devel",
          "product": "SUSE Manager Proxy LTS 4.3",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "libhavege2",
          "product": "SUSE Manager Proxy LTS 4.3",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged",
          "product": "SUSE Manager Retail Branch Server LTS 4.3",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged-devel",
          "product": "SUSE Manager Retail Branch Server LTS 4.3",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "libhavege2",
          "product": "SUSE Manager Retail Branch Server LTS 4.3",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged",
          "product": "SUSE Manager Server LTS 4.3",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "haveged-devel",
          "product": "SUSE Manager Server LTS 4.3",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "libhavege2",
          "product": "SUSE Manager Server LTS 4.3",
          "vendor": "SUSE",
          "versions": [
            {
              "lessThan": "1.9.14-150400.3.11.1",
              "status": "affected",
              "version": "?",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "meissner@suse.de"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In `src/havegecmd.c`, the `socket_handler` function performs a credential check on the abstract UNIX socket (`\\0/sys/entropy/haveged`). However, while it detects if the connecting user is not root (`cred.uid != 0`) and prepares a negative acknowledgement (`ASCII_NAK`), it **fails to stop execution**. The code proceeds to the `switch` statement, allowing any local unprivileged user to execute privileged commands such as `MAGIC_CHROOT`."
    }
  ],
  "id": "CVE-2026-41054",
  "lastModified": "2026-06-17T10:46:05.527",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "meissner@suse.de",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-41054",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-20T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-20T10:16:26.990",
  "references": [
    {
      "source": "meissner@suse.de",
      "url": "https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-41054"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/19/3"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/19/4"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/19/5"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/20/1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/21/17"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/22/1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2026/06/msg00005.html"
    }
  ],
  "sourceIdentifier": "meissner@suse.de",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-305"
        }
      ],
      "source": "meissner@suse.de",
      "type": "Secondary"
    }
  ]
}


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Tags
Taxonomy of the tags.




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.