CVE-2025-0577 (GCVE-0-2025-0577)

Vulnerability from cvelistv5 – Published: 2026-02-18 20:25 – Updated: 2026-02-18 20:25
VLAI?
Title
Glibc: vdso getrandom acceleration may return predictable randomness
Summary
An insufficient entropy vulnerability was found in glibc. The getrandom and arc4random family of functions may return predictable randomness if these functions are called again after the fork, which happens concurrently with a call to any of these functions.
CWE
Assigner
References
Impacted products
Vendor Product Version
Affected: 2.39-28.fc40 , ≤ 2.39-33.fc40 (semver)
Affected: 2.40-12.fc41 , ≤ 2.40-17.fc41 (semver)
Show details on NVD website

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            },
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              "lessThanOrEqual": "2.40-17.fc41",
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              "version": "2.40-12.fc41",
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          "cpes": [
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      "providerMetadata": {
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        "orgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5",
        "shortName": "fedora"
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          ],
          "url": "https://access.redhat.com/security/cve/CVE-2025-0577"
        },
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          "time": "2025-01-19T15:27:34.569Z",
          "value": "Reported to Red Hat."
        },
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      ],
      "title": "Glibc: vdso getrandom acceleration may return predictable randomness",
      "workarounds": [
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          "value": "Red Hat Product Security does not have any mitigation recommendations at this time."
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  "cveMetadata": {
    "assignerOrgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5",
    "assignerShortName": "fedora",
    "cveId": "CVE-2025-0577",
    "datePublished": "2026-02-18T20:25:34.864Z",
    "dateReserved": "2025-01-19T13:43:18.289Z",
    "dateUpdated": "2026-02-18T20:25:34.864Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-0577\",\"sourceIdentifier\":\"patrick@puiterwijk.org\",\"published\":\"2026-02-18T21:16:20.010\",\"lastModified\":\"2026-02-19T15:53:02.850\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An insufficient entropy vulnerability was found in glibc. The getrandom and arc4random family of functions may return predictable randomness if these functions are called again after the fork, which happens concurrently with a call to any of these functions.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"patrick@puiterwijk.org\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N\",\"baseScore\":4.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":2.5}]},\"weaknesses\":[{\"source\":\"patrick@puiterwijk.org\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-331\"}]}],\"references\":[{\"url\":\"https://access.redhat.com/security/cve/CVE-2025-0577\",\"source\":\"patrick@puiterwijk.org\"},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2338871\",\"source\":\"patrick@puiterwijk.org\"}]}}"
  }
}


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