RHSA-2026:20075

Vulnerability from csaf_redhat - Published: 2026-05-21 09:17 - Updated: 2026-07-15 14:33
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Moderate
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: libusb1: * libusb1-1.0.30-1.hum1 (aarch64, x86_64) * libusb1-devel-1.0.30-1.hum1 (aarch64, x86_64) * libusb1-devel-doc-1.0.30-1.hum1 (noarch) * libusb1-tests-examples-1.0.30-1.hum1 (aarch64, x86_64) * mingw32-libusb1-1.0.30-1.hum1 (aarch64, x86_64) * mingw64-libusb1-1.0.30-1.hum1 (aarch64, x86_64) * libusb1-1.0.30-1.hum1.src (src)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2026-23679

A flaw was found in libusb. An attacker can provide a specially crafted Universal Serial Bus (USB) configuration descriptor to applications using libusb. This malformed descriptor can lead to a null pointer dereference, causing the application to crash and resulting in a denial of service. This vulnerability can be exploited via virtualized USB passthrough, file-based descriptor parsing, or network sources.

6.2 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-476 - NULL Pointer Dereference
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:libusb1-main@aarch64 —
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:libusb1-main@noarch —
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:libusb1-main@src —
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:libusb1-main@x86_64 —
Vendor Fix fix
Threats
Impact Moderate
CVE-2026-47104

A flaw was found in libusb. This out-of-bounds read vulnerability allows a local attacker, particularly in virtualized environments utilizing USB passthrough, to trigger a denial of service. By providing a malformed USB descriptor, the attacker can cause the software to read beyond its allocated memory, leading to system instability or crashes.

5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-805 - Buffer Access with Incorrect Length Value
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:libusb1-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libusb1-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libusb1-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libusb1-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Moderate
References
To clipboard 

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      "cwe": {
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        "name": "NULL Pointer Dereference"
      },
      "discovery_date": "2026-05-27T15:11:02.126855+00:00",
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          "text": "A flaw was found in libusb. An attacker can provide a specially crafted Universal Serial Bus (USB) configuration descriptor to applications using libusb. This malformed descriptor can lead to a null pointer dereference, causing the application to crash and resulting in a denial of service. This vulnerability can be exploited via virtualized USB passthrough, file-based descriptor parsing, or network sources.",
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          "text": "libusb: libusb: Denial of Service via malformed USB configuration descriptor",
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        {
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            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
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            "Red Hat Hardened Images:libusb1-main@noarch",
            "Red Hat Hardened Images:libusb1-main@src",
            "Red Hat Hardened Images:libusb1-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "libusb: libusb: Denial of Service via malformed USB configuration descriptor"
    },
    {
      "cve": "CVE-2026-47104",
      "cwe": {
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        "name": "Buffer Access with Incorrect Length Value"
      },
      "discovery_date": "2026-05-27T15:09:29.722391+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2482070"
        }
      ],
      "notes": [
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          "text": "A flaw was found in libusb. This out-of-bounds read vulnerability allows a local attacker, particularly in virtualized environments utilizing USB passthrough, to trigger a denial of service. By providing a malformed USB descriptor, the attacker can cause the software to read beyond its allocated memory, leading to system instability or crashes.",
          "title": "Vulnerability description"
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          "title": "Statement"
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        },
        {
          "category": "external",
          "summary": "https://www.vulncheck.com/advisories/libusb-out-of-bounds-read-in-parse-iad-array",
          "url": "https://www.vulncheck.com/advisories/libusb-out-of-bounds-read-in-parse-iad-array"
        }
      ],
      "release_date": "2026-05-27T13:20:44.432000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-05-21T09:17:53+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
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            "Red Hat Hardened Images:libusb1-main@noarch",
            "Red Hat Hardened Images:libusb1-main@src",
            "Red Hat Hardened Images:libusb1-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:20075"
        },
        {
          "category": "workaround",
          "details": "To reduce the risk associated with this vulnerability, restrict the use of USB passthrough in virtualized environments. Administrators should ensure that only trusted USB devices are allowed to be passed through to virtual machines. Disabling USB passthrough when not strictly necessary can prevent a local attacker from exploiting this flaw to cause a denial of service.",
          "product_ids": [
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            "Red Hat Hardened Images:libusb1-main@noarch",
            "Red Hat Hardened Images:libusb1-main@src",
            "Red Hat Hardened Images:libusb1-main@x86_64"
          ]
        }
      ],
      "scores": [
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            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:libusb1-main@aarch64",
            "Red Hat Hardened Images:libusb1-main@noarch",
            "Red Hat Hardened Images:libusb1-main@src",
            "Red Hat Hardened Images:libusb1-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "libusb: libusb: Denial of Service via malformed USB descriptor"
    }
  ]
}



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  • 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.