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golang: archive/zip: Excessive CPU consumption when building archive index in archive/zip

🗓️ 20 May 2026 13:36:25Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 14 Views

Go archive zip has a super linear file name indexing flaw causing high CPU and memory use from crafted archives.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8aarch64podman5:5.2.2-18.rhaos4.17.el8podman-5:5.2.2-18.rhaos4.17.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64lepodman5:5.2.2-18.rhaos4.17.el8podman-5:5.2.2-18.rhaos4.17.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xpodman5:5.2.2-18.rhaos4.17.el8podman-5:5.2.2-18.rhaos4.17.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64podman5:5.2.2-18.rhaos4.17.el8podman-5:5.2.2-18.rhaos4.17.el8.x86_64.rpm
Red Hat Enterprise Linux9aarch64podman5:5.2.2-18.rhaos4.17.el9podman-5:5.2.2-18.rhaos4.17.el9.aarch64.rpm
Red Hat Enterprise Linux9ppc64lepodman5:5.2.2-18.rhaos4.17.el9podman-5:5.2.2-18.rhaos4.17.el9.ppc64le.rpm
Red Hat Enterprise Linux9s390xpodman5:5.2.2-18.rhaos4.17.el9podman-5:5.2.2-18.rhaos4.17.el9.s390x.rpm
Red Hat Enterprise Linux9x86_64podman5:5.2.2-18.rhaos4.17.el9podman-5:5.2.2-18.rhaos4.17.el9.x86_64.rpm
Red Hat Enterprise Linux8aarch64podman-catatonit5:5.2.2-18.rhaos4.17.el8podman-catatonit-5:5.2.2-18.rhaos4.17.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64lepodman-catatonit5:5.2.2-18.rhaos4.17.el8podman-catatonit-5:5.2.2-18.rhaos4.17.el8.ppc64le.rpm
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22 Jul 2026 15:26Current
6.9Medium risk
Vulners AI Score6.9
CVSS 3.16.5
EPSS0.00643
SSVC
14