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        "cveId": "CVE-2026-4426",
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "state": "PUBLISHED",
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        "dateReserved": "2026-03-19T12:43:31.427Z",
        "datePublished": "2026-03-19T13:53:39.318Z",
        "dateUpdated": "2026-09-01T11:59:47.897Z"
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        "cna": {
            "title": "Libarchive: libarchive: denial of service via malformed iso file processing",
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                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 6.5,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
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            "descriptions": [
                {
                    "lang": "en",
                    "value": "A flaw was found in libarchive. An Undefined Behavior vulnerability exists in the zisofs decompression logic, caused by improper validation of a field (`pz_log2_bs`) read from ISO9660 Rock Ridge extensions. A remote attacker can exploit this by supplying a specially crafted ISO file. This can lead to incorrect memory allocation and potential application crashes, resulting in a denial-of-service (DoS) condition."
                }
            ],
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                {
                    "vendor": "Red Hat",
                    "product": "Red Hat Hardened Images",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "libarchive-main",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "3.8.7-1.hum1",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
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                    "vendor": "Red Hat",
                    "product": "Red Hat Enterprise Linux 10",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "libarchive",
                    "defaultStatus": "affected",
                    "cpes": [
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                    "vendor": "Red Hat",
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                    "product": "Red Hat Enterprise Linux 7",
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                    "packageName": "libarchive",
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                    "packageName": "libarchive",
                    "defaultStatus": "affected",
                    "cpes": [
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                    "vendor": "Red Hat",
                    "product": "Red Hat Enterprise Linux 9",
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                    "packageName": "libarchive",
                    "defaultStatus": "affected",
                    "cpes": [
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                    "vendor": "Red Hat",
                    "product": "Red Hat OpenShift Container Platform 4",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "openshift/ose-rhel-coreos-8",
                    "defaultStatus": "affected",
                    "cpes": [
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                    "vendor": "Red Hat",
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                    "packageName": "openshift/ose-rhel-coreos-9",
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            ],
            "references": [
                {
                    "url": "https://access.redhat.com/errata/RHSA-2026:8944",
                    "name": "RHSA-2026:8944",
                    "tags": [
                        "vendor-advisory",
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                    ]
                },
                {
                    "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2449010",
                    "name": "RHBZ#2449010",
                    "tags": [
                        "issue-tracking",
                        "x_refsource_REDHAT"
                    ]
                },
                {
                    "url": "https://github.com/libarchive/libarchive/pull/2897"
                }
            ],
            "datePublic": "2026-03-19T00:00:00.000Z",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-1335",
                            "description": "Incorrect Bitwise Shift of Integer",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "x_redhatCweChain": "CWE-1335: Incorrect Bitwise Shift of Integer",
            "workarounds": [
                {
                    "lang": "en",
                    "value": "To mitigate this issue, avoid processing untrusted ISO9660 images with `libarchive`. Restricting the sources of ISO files and ensuring they originate from trusted entities can prevent exploitation."
                }
            ],
            "timeline": [
                {
                    "lang": "en",
                    "time": "2026-03-19T12:39:13.967Z",
                    "value": "Reported to Red Hat."
                },
                {
                    "lang": "en",
                    "time": "2026-03-19T00:00:00.000Z",
                    "value": "Made public."
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Red Hat would like to thank Elhanan Haenel for reporting this issue."
                }
            ],
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