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tcpdump: ppp decapsulator can be convinced to allocate a large amount of memory

🗓️ 09 Nov 2021 18:45:55Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 3 Views

Decapsulation flaw in point to point handling by a packet capture tool can trigger memory exhaustion and denial of service.

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Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8aarch64tcpdump14:4.9.3-2.el8tcpdump-14:4.9.3-2.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64letcpdump14:4.9.3-2.el8tcpdump-14:4.9.3-2.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xtcpdump14:4.9.3-2.el8tcpdump-14:4.9.3-2.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64tcpdump14:4.9.3-2.el8tcpdump-14:4.9.3-2.el8.x86_64.rpm
Red Hat Enterprise Linux8aarch64tcpdump-debuginfo14:4.9.3-2.el8tcpdump-debuginfo-14:4.9.3-2.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64letcpdump-debuginfo14:4.9.3-2.el8tcpdump-debuginfo-14:4.9.3-2.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xtcpdump-debuginfo14:4.9.3-2.el8tcpdump-debuginfo-14:4.9.3-2.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64tcpdump-debuginfo14:4.9.3-2.el8tcpdump-debuginfo-14:4.9.3-2.el8.x86_64.rpm
Red Hat Enterprise Linux8aarch64tcpdump-debugsource14:4.9.3-2.el8tcpdump-debugsource-14:4.9.3-2.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64letcpdump-debugsource14:4.9.3-2.el8tcpdump-debugsource-14:4.9.3-2.el8.ppc64le.rpm
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21 Nov 2025 18:26Current
6.8Medium risk
Vulners AI Score6.8
CVSS 25
CVSS 3.17.5
EPSS0.03071
3