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    CVE-2019-19956

    xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.

    Published:Dec 24, 2019
    Last Modified:Dec 3, 2025
    EPS:Dec 24, 2019
    EPSS Score:0.00154
    CVSS Score:7.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Netapp
    Product
    Active Iq Unified Manager
    Vendor
    Netapp
    Product
    Clustered Data Ontap
    Vendor
    Netapp
    Product
    Clustered Data Ontap Antivirus Connector
    Vendor
    Netapp
    Product
    Manageability Software Development Kit
    Vendor
    Netapp
    Product
    Ontap Select Deploy Administration Utility
    Vendor
    Netapp
    Product
    Steelstore Cloud Integrated Storage
    Vendor
    Oracle
    Product
    Real User Experience Insight
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Jboss Core Services
    Vendor
    Redhat
    Product
    Openshift Do
    Vendor
    Siemens
    Product
    Sinema Remote Connect Server
    Vendor
    Xmlsoft
    Product
    Libxml2

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-469 HTTP DoS

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    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
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    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
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    References

    http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00047.html
    http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00005.html
    https://cert-portal.siemens.com/productcert/pdf/ssa-292794.pdf
    https://gitlab.gnome.org/GNOME/libxml2/commit/5a02583c7e683896d84878bd90641d8d9b0d0549
    https://lists.debian.org/debian-lts-announce/2019/12/msg00032.html
    https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5R55ZR52RMBX24TQTWHCIWKJVRV6YAWI/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDPF3AAVKUAKDYFMFKSIQSVVS3EEFPQH/
    https://security.netapp.com/advisory/ntap-20200114-0002/
    https://us-cert.cisa.gov/ics/advisories/icsa-21-103-08
    https://usn.ubuntu.com/4274-1/
    https://www.oracle.com/security-alerts/cpujul2020.html
    http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00047.html
    http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00005.html
    https://cert-portal.siemens.com/productcert/pdf/ssa-292794.pdf
    https://gitlab.gnome.org/GNOME/libxml2/commit/5a02583c7e683896d84878bd90641d8d9b0d0549
    https://lists.debian.org/debian-lts-announce/2019/12/msg00032.html
    https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5R55ZR52RMBX24TQTWHCIWKJVRV6YAWI/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDPF3AAVKUAKDYFMFKSIQSVVS3EEFPQH/
    https://security.netapp.com/advisory/ntap-20200114-0002/
    https://us-cert.cisa.gov/ics/advisories/icsa-21-103-08
    https://usn.ubuntu.com/4274-1/
    https://www.oracle.com/security-alerts/cpujul2020.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High