CVE-2026-1485

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This buffer underflow vulnerability occurs because the length of a header line is stored in a signed integer, which can lead to integer wraparound for very large inputs. This results in pointer underflow and out-of-bounds memory access. Exploitation requires a local user to install or process a specially crafted treemagic file, which can lead to local denial of service or application instability."}], "affected": [{"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "bootc", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:enterprise_linux:10"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "glib2", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:enterprise_linux:10"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "glycin-loaders", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:enterprise_linux:10"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", 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"cpes": ["cpe:/a:redhat:openshift_ai"], "defaultStatus": "unaffected", "packageName": "rhoai/odh-training-operator-rhel9", "product": "Red Hat OpenShift AI (RHOAI)", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:openshift_ai"], "defaultStatus": "unaffected", "packageName": "rhoai/odh-trustyai-service-operator-rhel9", "product": "Red Hat OpenShift AI (RHOAI)", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:openshift_ai"], "defaultStatus": "unaffected", "packageName": "rhoai/odh-workbenches-operator-rhel9", "product": "Red Hat OpenShift AI (RHOAI)", "vendor": "Red Hat"}], "source": "secalert@redhat.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in Glib's content type parsing logic. This buffer underflow vulnerability occurs because the length of a header line is stored in a signed integer, which can lead to integer wraparound for very large inputs. This results in pointer underflow and out-of-bounds memory access. Exploitation requires a local user to install or process a specially crafted treemagic file, which can lead to local denial of service or application instability."}, {"lang": "es", "value": "Se encontr\u00f3 una falla en la l\u00f3gica de an\u00e1lisis de tipos de contenido de Glib. Esta vulnerabilidad de desbordamiento negativo de b\u00fafer ocurre porque la longitud de una l\u00ednea de encabezado se almacena en un entero con signo, lo que puede llevar a un desbordamiento de entero para entradas muy grandes. Esto resulta en un desbordamiento negativo de puntero y acceso a memoria fuera de l\u00edmites. La explotaci\u00f3n requiere que un usuario local instale o procese un archivo treemagic especialmente dise\u00f1ado, lo que puede llevar a una denegaci\u00f3n de servicio local o inestabilidad de la aplicaci\u00f3n."}], "id": "CVE-2026-1485", "lastModified": "2026-11-06T18:18:11.723", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 2.8, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 1.4, "source": "secalert@redhat.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-1485", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-01-27T14:39:59.509071Z", "version": "2.0.3"}}]}, "published": "2026-01-27T14:15:56.223", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2026-1485"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2433325"}, {"source": "secalert@redhat.com", "url": "https://gitlab.gnome.org/GNOME/glib/-/issues/3871"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-124"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

{"acknowledgement": "Red Hat would like to thank treeplus for reporting this issue.", "bugzilla": {"description": "Glib: Glib: Local denial of service via buffer underflow in content type parsing", "id": "2433325", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2433325"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "(CWE-124|CWE-787|CWE-125)", "details": ["A flaw was found in Glib's content type parsing logic. This buffer underflow vulnerability occurs because the length of a header line is stored in a signed integer, which can lead to integer wraparound for very large inputs. This results in pointer underflow and out-of-bounds memory access. Exploitation requires a local user to install or process a specially crafted treemagic file, which can lead to local denial of service or application instability."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2026-1485", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "bootc", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "glib2", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "glycin-loaders", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "loupe", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "mingw-glib2", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "papers", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "rpm-ostree", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Fix deferred", "package_name": "glib2", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "glib2", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "glib2", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "librsvg2", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "mingw-glib2", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "bootc", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "glib2", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "librsvg2", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "mingw-glib2", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-01-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-1485\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-1485"], "statement": "This vulnerability is rated Low for Red Hat. Exploitation requires a local user to install or process a specially crafted treemagic file, which limits the practical impact to local denial of service or application instability. Red Hat products are affected where GLib is used to process untrusted treemagic files.", "threat_severity": "Low"}

{"analysis": {"en": {"generated_at": "2026-04-16T07:17:31.898151+00:00", "value": {"mitigation_remediation": ["Update the glib package to the latest version provided by the distribution to eliminate the vulnerable code.", "Upgrade to the most recent Red\u00a0Hat Enterprise Linux minor release that includes the glib fix, ensuring all security updates are applied.", "Restrict permissions on the filesystem so that local users cannot create or modify treemagic files that may be processed by the glib library."], "summary": {"action": "Assess Impact", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "This flaw affects Red\u00a0Hat Enterprise Linux releases\u00a06,\u00a07,\u00a08,\u00a09, and\u00a010, as all these distributions ship a vulnerable version of the glib library. No specific glib version range is provided in the advisory, so any RHEL system that has not applied the latest glib update may be exposed.", "description_and_impact": "The vulnerability is a buffer underflow in glib's content type parsing logic caused by storing a header line length in a signed integer, which allows integer wraparound for very large inputs. The resulting pointer underflow leads to an out\u2011of\u2011bounds memory read that can crash the application or cause instability. The flaw is classified as an integer underflow (CWE\u2011124, CWE\u2011125) and a buffer overflow (CWE\u2011787). The impact is local denial of service or application instability when a local user processes a specially crafted treemagic file.", "risk_and_exploitability": "The CVSS score is 2.8, indicating moderate severity. EPSS is reported as less than 1%, meaning exploitation attempts are expected to be rare. The vulnerability is not listed in CISA\u2019s KEV catalog. Because exploitation requires a local user to install or run a treemagic file, the likelihood of abuse is limited to environments where uncontrolled local access is possible. In most production setups, the risk is low, but any host that allows local untrusted users to create arbitrary files should be considered vulnerable."}}}}, "created": "2026-04-16T07:30:28.597355+00:00", "updated": "2026-04-16T07:30:28.597367+00:00", "vendors": []}