RHSA-2026:38279

Vulnerability from csaf_redhat - Published: 2026-07-12 15:11 - Updated: 2026-07-15 09:07
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
Severity
Moderate
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: libarchive: * bsdcat-3.8.8-2.1.hum1 (aarch64, x86_64) * bsdcpio-3.8.8-2.1.hum1 (aarch64, x86_64) * bsdtar-3.8.8-2.1.hum1 (aarch64, x86_64) * bsdunzip-3.8.8-2.1.hum1 (aarch64, x86_64) * libarchive-3.8.8-2.1.hum1 (aarch64, x86_64) * libarchive-devel-3.8.8-2.1.hum1 (aarch64, x86_64) * libarchive-3.8.8-2.1.hum1.src (src) Security Fix(es): libarchive: * CVE-2026-15028
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-2026-15028

A flaw was found in libarchive. This vulnerability allows a remote attacker to trigger a heap overflow by providing a specially crafted tar archive. The issue occurs during the parsing of a PAX extended header containing a malformed SUN.holesdata sparse-file attribute. Successful exploitation could lead to a denial of service, making the system unavailable, or potentially allow for arbitrary code execution, giving the attacker control over the affected system.

3.9 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:libarchive-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libarchive-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:libarchive-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Moderate
References
To clipboard 

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        "category": "summary",
        "text": "An update for Red Hat Hardened Images RPMs is now available.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "This update includes the following RPMs:\n\nlibarchive:\n  * bsdcat-3.8.8-2.1.hum1 (aarch64, x86_64)\n  * bsdcpio-3.8.8-2.1.hum1 (aarch64, x86_64)\n  * bsdtar-3.8.8-2.1.hum1 (aarch64, x86_64)\n  * bsdunzip-3.8.8-2.1.hum1 (aarch64, x86_64)\n  * libarchive-3.8.8-2.1.hum1 (aarch64, x86_64)\n  * libarchive-devel-3.8.8-2.1.hum1 (aarch64, x86_64)\n  * libarchive-3.8.8-2.1.hum1.src (src)\n\nSecurity Fix(es):\n\nlibarchive:\n  * CVE-2026-15028",
        "title": "Details"
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        "text": "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.",
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    "title": "Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update",
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                "name": "Red Hat Hardened Images",
                "product": {
                  "name": "Red Hat Hardened Images",
                  "product_id": "Red Hat Hardened Images",
                  "product_identification_helper": {
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                "name": "libarchive-main@aarch64",
                "product": {
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                  "product_id": "libarchive-main@aarch64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/bsdcat@3.8.8-2.1.hum1?arch=aarch64\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-aarch64-rpms"
                  }
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                "name": "libarchive-main@x86_64",
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                    "purl": "pkg:rpm/redhat/libarchive@3.8.8-2.1.hum1?arch=src\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-source-rpms"
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        "relates_to_product_reference": "Red Hat Hardened Images"
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  "vulnerabilities": [
    {
      "cve": "CVE-2026-15028",
      "discovery_date": "2026-07-08T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2497970"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in libarchive. This vulnerability allows a remote attacker to trigger a heap overflow by providing a specially crafted tar archive. The issue occurs during the parsing of a PAX extended header containing a malformed SUN.holesdata sparse-file attribute. Successful exploitation could lead to a denial of service, making the system unavailable, or potentially allow for arbitrary code execution, giving the attacker control over the affected system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libarchive: heap overflow OOB read while parsing a tar archive contains a PAX extended header",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Conditions for Exploitation: Successful exploitation requires user interaction or a specific application workflow. An attacker cannot trigger this flaw entirely on their own remotely; they must supply a specially crafted tar archive and rely on a user or an automated system (such as an antivirus scanner or file extraction tool) to actively parse it using the libarchive library.\n\nImpact Limitations: Although the heap overflow has the potential to allow for arbitrary code execution, achieving this reliably is typically complex and highly dependent on the memory layout and protections of the specific application utilizing the library. In most common scenarios, the malformed archive will simply cause the parsing application to crash, resulting in a localized Denial of Service (DoS) rather than a full system compromise.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:libarchive-main@aarch64",
          "Red Hat Hardened Images:libarchive-main@src",
          "Red Hat Hardened Images:libarchive-main@x86_64"
        ]
      },
      "references": [
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-15028"
        },
        {
          "category": "external",
          "summary": "RHBZ#2497970",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2497970"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-15028",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-15028"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-15028",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15028"
        },
        {
          "category": "external",
          "summary": "https://github.com/libarchive/libarchive/issues/3251",
          "url": "https://github.com/libarchive/libarchive/issues/3251"
        },
        {
          "category": "external",
          "summary": "https://github.com/libarchive/libarchive/pull/3253",
          "url": "https://github.com/libarchive/libarchive/pull/3253"
        }
      ],
      "release_date": "2026-07-08T10:10:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-12T15:11:41+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": [
            "Red Hat Hardened Images:libarchive-main@aarch64",
            "Red Hat Hardened Images:libarchive-main@src",
            "Red Hat Hardened Images:libarchive-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:38279"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, avoid processing untrusted or unverified tar archives. Users should exercise caution when handling archives from unknown sources or those with unexpected content, as processing a specially crafted archive could trigger the vulnerability.",
          "product_ids": [
            "Red Hat Hardened Images:libarchive-main@aarch64",
            "Red Hat Hardened Images:libarchive-main@src",
            "Red Hat Hardened Images:libarchive-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 3.9,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:libarchive-main@aarch64",
            "Red Hat Hardened Images:libarchive-main@src",
            "Red Hat Hardened Images:libarchive-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "libarchive: heap overflow OOB read while parsing a tar archive contains a PAX extended header"
    }
  ]
}



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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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