RHSA-2026:83427

Vulnerability from csaf_redhat - Published: 2026-10-15 02:42 - Updated: 2026-10-16 14:52
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: nginx: * nginx-1.30.6-1.hum1 (aarch64, s390x, x86_64) * nginx-all-modules-1.30.6-1.hum1 (noarch) * nginx-core-1.30.6-1.hum1 (aarch64, s390x, x86_64) * nginx-filesystem-1.30.6-1.hum1 (noarch) * nginx-mod-devel-1.30.6-1.hum1 (aarch64, s390x, x86_64) * nginx-mod-http-geoip-1.30.6-1.hum1 (aarch64, s390x, x86_64) * nginx-mod-http-image-filter-1.30.6-1.hum1 (aarch64, s390x, x86_64) * nginx-mod-http-perl-1.30.6-1.hum1 (aarch64, s390x, x86_64) * nginx-mod-http-xslt-filter-1.30.6-1.hum1 (aarch64, s390x, x86_64) * nginx-mod-mail-1.30.6-1.hum1 (aarch64, s390x, x86_64) * nginx-mod-stream-1.30.6-1.hum1 (aarch64, s390x, x86_64) * nginx-mod-stream-geoip-1.30.6-1.hum1 (aarch64, s390x, x86_64) * nginx-1.30.6-1.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.

A flaw was found in nginx. A remote, unauthenticated attacker can trigger a heap-based buffer overflow by sending crafted HTTP requests to a server configured with specific alias and rewrite directives that reference the request filename variable. Successful exploitation may allow an attacker to achieve arbitrary code execution or cause a Denial of Service (DoS) by crashing worker processes.

CWE-122 - Heap-based Buffer Overflow
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:nginx-0:1.30.6-1.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-0:1.30.6-1.hum1@s390x —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-0:1.30.6-1.hum1@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-0:1.30.6-1.hum1@x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-all-modules-0:1.30.6-1.hum1@noarch@public-hummingbird-aarch64-rpms —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-all-modules-0:1.30.6-1.hum1@noarch@public-hummingbird-s390x-rpms —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-all-modules-0:1.30.6-1.hum1@noarch@public-hummingbird-x86_64-rpms —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-core-0:1.30.6-1.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-core-0:1.30.6-1.hum1@s390x —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-core-0:1.30.6-1.hum1@x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-filesystem-0:1.30.6-1.hum1@noarch@public-hummingbird-aarch64-rpms —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-filesystem-0:1.30.6-1.hum1@noarch@public-hummingbird-s390x-rpms —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-filesystem-0:1.30.6-1.hum1@noarch@public-hummingbird-x86_64-rpms —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-devel-0:1.30.6-1.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-devel-0:1.30.6-1.hum1@s390x —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-devel-0:1.30.6-1.hum1@x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-http-geoip-0:1.30.6-1.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-http-geoip-0:1.30.6-1.hum1@s390x —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-http-geoip-0:1.30.6-1.hum1@x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-http-image-filter-0:1.30.6-1.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-http-image-filter-0:1.30.6-1.hum1@s390x —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-http-image-filter-0:1.30.6-1.hum1@x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-http-perl-0:1.30.6-1.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-http-perl-0:1.30.6-1.hum1@s390x —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-http-perl-0:1.30.6-1.hum1@x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-http-xslt-filter-0:1.30.6-1.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-http-xslt-filter-0:1.30.6-1.hum1@s390x —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-http-xslt-filter-0:1.30.6-1.hum1@x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-mail-0:1.30.6-1.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-mail-0:1.30.6-1.hum1@s390x —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-mail-0:1.30.6-1.hum1@x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-stream-0:1.30.6-1.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-stream-0:1.30.6-1.hum1@s390x —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-stream-0:1.30.6-1.hum1@x86_64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-stream-geoip-0:1.30.6-1.hum1@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-stream-geoip-0:1.30.6-1.hum1@s390x —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:nginx-mod-stream-geoip-0:1.30.6-1.hum1@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Important

A flaw was found in NGINX. In certain configurations using asynchronous file I/O and SSI pages with include virtual commands, request processing can access freed memory in a worker process. A remote attacker may trigger memory corruption or a worker crash. Arbitrary code execution may be possible if ASLR is disabled or bypassed.

CWE-416 - Use After Free
Affected products
Fixed 37 products, the same list as for CVE-2026-15176
Threats
Impact Important

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      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
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      "discovery_date": "2026-10-14T14:51:01.008670+00:00",
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          "text": "2552352"
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          "text": "A flaw was found in nginx. A remote, unauthenticated attacker can trigger a heap-based buffer overflow by sending crafted HTTP requests to a server configured with specific alias and rewrite directives that reference the request filename variable. Successful exploitation may allow an attacker to achieve arbitrary code execution or cause a Denial of Service (DoS) by crashing worker processes.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "nginx: nginx: heap-based buffer overflow in ngx_http_core_module via alias with rewrite referencing $request_filename",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "An IMPORTANT severity heap-based buffer overflow was found in nginx (ngx_http_core_module), affecting the nginx component in Red Hat Enterprise Linux 8, 9, and 10, Red Hat In-Vehicle OS, Red Hat Hardened Images, and Red Hat\u0027s services management platform (cloud.redhat.com). A remote, unauthenticated attacker can send crafted HTTP requests to trigger a heap-based buffer overflow in the nginx worker process on servers configured with a location that uses the alias directive together with rewrite and a set or return directive referencing the $request_filename variable, or where the $request_filename variable is used in an access log format directive. Exploitation requires this specific configuration and conditions beyond the attacker\u0027s control; a successful attack crashes the worker process, causing a denial of service, and may allow code execution on systems with ASLR disabled or where the attacker can bypass ASLR. This is a data plane issue with no control plane exposure. Red Hat rates this flaw as IMPORTANT (CVSS 3.1 score 8.1, AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H), which is lower than the upstream CVSS 4.0 rating of 9.2 CRITICAL, because exploitation depends on a specific server configuration. A fix is being pursued for the affected products.",
          "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"
        }
      ],
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    },
    {
      "cve": "CVE-2026-97205",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
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      "discovery_date": "2026-10-14T14:52:20.558649+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2552359"
        }
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      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in NGINX. In certain configurations using asynchronous file I/O and SSI pages with include virtual commands, request processing can access freed memory in a worker process. A remote attacker may trigger memory corruption or a worker crash. Arbitrary code execution may be possible if ASLR is disabled or bypassed.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "nginx: NGINX ngx_http_core_module vulnerability",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability is rated as Important severity because an unauthenticated remote attacker could trigger memory corruption and worker crashes, potentially leading to arbitrary code execution. However, successful exploitation requires non-standard configurations where both asynchronous file I/O (aio) and Server Side Includes (ssi) processing are explicitly enabled. Furthermore, Red Hat Enterprise Linux systems enforce Address Space Layout Randomization (ASLR) by default, which substantially limits the feasibility of reliable code execution.",
          "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"
        }
      ],
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          "summary": "Canonical URL",
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            "Red Hat Hardened Images:nginx-all-modules-0:1.30.6-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:nginx-core-0:1.30.6-1.hum1@aarch64",
            "Red Hat Hardened Images:nginx-core-0:1.30.6-1.hum1@s390x",
            "Red Hat Hardened Images:nginx-core-0:1.30.6-1.hum1@x86_64",
            "Red Hat Hardened Images:nginx-filesystem-0:1.30.6-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:nginx-filesystem-0:1.30.6-1.hum1@noarch@public-hummingbird-s390x-rpms",
            "Red Hat Hardened Images:nginx-filesystem-0:1.30.6-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:nginx-mod-devel-0:1.30.6-1.hum1@aarch64",
            "Red Hat Hardened Images:nginx-mod-devel-0:1.30.6-1.hum1@s390x",
            "Red Hat Hardened Images:nginx-mod-devel-0:1.30.6-1.hum1@x86_64",
            "Red Hat Hardened Images:nginx-mod-http-geoip-0:1.30.6-1.hum1@aarch64",
            "Red Hat Hardened Images:nginx-mod-http-geoip-0:1.30.6-1.hum1@s390x",
            "Red Hat Hardened Images:nginx-mod-http-geoip-0:1.30.6-1.hum1@x86_64",
            "Red Hat Hardened Images:nginx-mod-http-image-filter-0:1.30.6-1.hum1@aarch64",
            "Red Hat Hardened Images:nginx-mod-http-image-filter-0:1.30.6-1.hum1@s390x",
            "Red Hat Hardened Images:nginx-mod-http-image-filter-0:1.30.6-1.hum1@x86_64",
            "Red Hat Hardened Images:nginx-mod-http-perl-0:1.30.6-1.hum1@aarch64",
            "Red Hat Hardened Images:nginx-mod-http-perl-0:1.30.6-1.hum1@s390x",
            "Red Hat Hardened Images:nginx-mod-http-perl-0:1.30.6-1.hum1@x86_64",
            "Red Hat Hardened Images:nginx-mod-http-xslt-filter-0:1.30.6-1.hum1@aarch64",
            "Red Hat Hardened Images:nginx-mod-http-xslt-filter-0:1.30.6-1.hum1@s390x",
            "Red Hat Hardened Images:nginx-mod-http-xslt-filter-0:1.30.6-1.hum1@x86_64",
            "Red Hat Hardened Images:nginx-mod-mail-0:1.30.6-1.hum1@aarch64",
            "Red Hat Hardened Images:nginx-mod-mail-0:1.30.6-1.hum1@s390x",
            "Red Hat Hardened Images:nginx-mod-mail-0:1.30.6-1.hum1@x86_64",
            "Red Hat Hardened Images:nginx-mod-stream-0:1.30.6-1.hum1@aarch64",
            "Red Hat Hardened Images:nginx-mod-stream-0:1.30.6-1.hum1@s390x",
            "Red Hat Hardened Images:nginx-mod-stream-0:1.30.6-1.hum1@x86_64",
            "Red Hat Hardened Images:nginx-mod-stream-geoip-0:1.30.6-1.hum1@aarch64",
            "Red Hat Hardened Images:nginx-mod-stream-geoip-0:1.30.6-1.hum1@s390x",
            "Red Hat Hardened Images:nginx-mod-stream-geoip-0:1.30.6-1.hum1@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "nginx: NGINX ngx_http_core_module vulnerability"
    }
  ]
}



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