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golang: archive/tar: Unbounded allocation when parsing GNU sparse map

🗓️ 03 Jun 2026 16:14:02Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 14 Views

Go tar archive reader does not bound pax 1.0 sparse blocks, risking memory exhaustion DoS.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8aarch64openshift-hyperkube4.20.0-202605141748.p2.g2a0461f.assembly.stream.el8openshift-hyperkube-4.20.0-202605141748.p2.g2a0461f.assembly.stream.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64leopenshift-hyperkube4.20.0-202605141748.p2.g2a0461f.assembly.stream.el8openshift-hyperkube-4.20.0-202605141748.p2.g2a0461f.assembly.stream.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xopenshift-hyperkube4.20.0-202605141748.p2.g2a0461f.assembly.stream.el8openshift-hyperkube-4.20.0-202605141748.p2.g2a0461f.assembly.stream.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64openshift-hyperkube4.20.0-202605141748.p2.g2a0461f.assembly.stream.el8openshift-hyperkube-4.20.0-202605141748.p2.g2a0461f.assembly.stream.el8.x86_64.rpm
Red Hat Enterprise Linux9aarch64openshift-hyperkube4.20.0-202605141748.p2.g2a0461f.assembly.stream.el9openshift-hyperkube-4.20.0-202605141748.p2.g2a0461f.assembly.stream.el9.aarch64.rpm
Red Hat Enterprise Linux9ppc64leopenshift-hyperkube4.20.0-202605141748.p2.g2a0461f.assembly.stream.el9openshift-hyperkube-4.20.0-202605141748.p2.g2a0461f.assembly.stream.el9.ppc64le.rpm
Red Hat Enterprise Linux9s390xopenshift-hyperkube4.20.0-202605141748.p2.g2a0461f.assembly.stream.el9openshift-hyperkube-4.20.0-202605141748.p2.g2a0461f.assembly.stream.el9.s390x.rpm
Red Hat Enterprise Linux9x86_64openshift-hyperkube4.20.0-202605141748.p2.g2a0461f.assembly.stream.el9openshift-hyperkube-4.20.0-202605141748.p2.g2a0461f.assembly.stream.el9.x86_64.rpm
Red Hat Enterprise Linux8aarch64openshift-kube-apiserver4.20.0-202605141748.p2.g2a0461f.assembly.stream.el8openshift-kube-apiserver-4.20.0-202605141748.p2.g2a0461f.assembly.stream.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64leopenshift-kube-apiserver4.20.0-202605141748.p2.g2a0461f.assembly.stream.el8openshift-kube-apiserver-4.20.0-202605141748.p2.g2a0461f.assembly.stream.el8.ppc64le.rpm
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20 Jul 2026 21:28Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14.3
EPSS0.00419
SSVC
14