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lxml: NULL Pointer Dereference in lxml

🗓️ 15 Nov 2022 13:35:12Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 3 Views

lxml has a null pointer dereference in iterwalk used by canonicalize, causing crash with invalid parser input.

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Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9aarch64python-lxml-debugsource4.6.5-3.el9python-lxml-debugsource-4.6.5-3.el9.aarch64.rpm
Red Hat Enterprise Linux9ppc64lepython-lxml-debugsource4.6.5-3.el9python-lxml-debugsource-4.6.5-3.el9.ppc64le.rpm
Red Hat Enterprise Linux9s390xpython-lxml-debugsource4.6.5-3.el9python-lxml-debugsource-4.6.5-3.el9.s390x.rpm
Red Hat Enterprise Linux9x86_64python-lxml-debugsource4.6.5-3.el9python-lxml-debugsource-4.6.5-3.el9.x86_64.rpm
Red Hat Enterprise Linux9aarch64python3-lxml4.6.5-3.el9python3-lxml-4.6.5-3.el9.aarch64.rpm
Red Hat Enterprise Linux9ppc64lepython3-lxml4.6.5-3.el9python3-lxml-4.6.5-3.el9.ppc64le.rpm
Red Hat Enterprise Linux9s390xpython3-lxml4.6.5-3.el9python3-lxml-4.6.5-3.el9.s390x.rpm
Red Hat Enterprise Linux9x86_64python3-lxml4.6.5-3.el9python3-lxml-4.6.5-3.el9.x86_64.rpm
Red Hat Enterprise Linux9aarch64python3-lxml-debuginfo4.6.5-3.el9python3-lxml-debuginfo-4.6.5-3.el9.aarch64.rpm
Red Hat Enterprise Linux9ppc64lepython3-lxml-debuginfo4.6.5-3.el9python3-lxml-debuginfo-4.6.5-3.el9.ppc64le.rpm
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21 Nov 2025 18:34Current
7.1High risk
Vulners AI Score7.1
CVSS 25
CVSS 3.17.5
CVSS 35.3
EPSS0.02462
3