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dhcp: option refcount overflow when leasequery is enabled leading to dhcpd abort

🗓️ 16 May 2023 08:42:24Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 10 Views

Integer overflow in DHCP server when lease query is enabled causes abort due to option refcount not decremented.

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Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8aarch64dhcp-client12:4.3.6-49.el8dhcp-client-12:4.3.6-49.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64ledhcp-client12:4.3.6-49.el8dhcp-client-12:4.3.6-49.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xdhcp-client12:4.3.6-49.el8dhcp-client-12:4.3.6-49.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64dhcp-client12:4.3.6-49.el8dhcp-client-12:4.3.6-49.el8.x86_64.rpm
Red Hat Enterprise Linux8aarch64dhcp-client-debuginfo12:4.3.6-49.el8dhcp-client-debuginfo-12:4.3.6-49.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64ledhcp-client-debuginfo12:4.3.6-49.el8dhcp-client-debuginfo-12:4.3.6-49.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xdhcp-client-debuginfo12:4.3.6-49.el8dhcp-client-debuginfo-12:4.3.6-49.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64dhcp-client-debuginfo12:4.3.6-49.el8dhcp-client-debuginfo-12:4.3.6-49.el8.x86_64.rpm
Red Hat Enterprise Linux8anydhcp-client-debuginfo12:4.3.6-49.el8.i686dhcp-client-debuginfo-12:4.3.6-49.el8.i686.noarch.rpm
Red Hat Enterprise Linux8anydhcp-common12:4.3.6-49.el8.noarchdhcp-common-12:4.3.6-49.el8.noarch.noarch.rpm
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03 Jul 2026 01:44Current
7.4High risk
Vulners AI Score7.4
CVSS 3.16.5
EPSS0.00664
10