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

🗓️ 25 Nov 2025 05:23:44Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 5 Views

The Go archive/tar reader may allocate memory for GNU sparse regions in pax, risking denial.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9aarch64buildah2:1.41.6-1.el9_7buildah-2:1.41.6-1.el9_7.aarch64.rpm
Red Hat Enterprise Linux9ppc64lebuildah2:1.41.6-1.el9_7buildah-2:1.41.6-1.el9_7.ppc64le.rpm
Red Hat Enterprise Linux9s390xbuildah2:1.41.6-1.el9_7buildah-2:1.41.6-1.el9_7.s390x.rpm
Red Hat Enterprise Linux9x86_64buildah2:1.41.6-1.el9_7buildah-2:1.41.6-1.el9_7.x86_64.rpm
Red Hat Enterprise Linux9aarch64buildah-debuginfo2:1.41.6-1.el9_7buildah-debuginfo-2:1.41.6-1.el9_7.aarch64.rpm
Red Hat Enterprise Linux9ppc64lebuildah-debuginfo2:1.41.6-1.el9_7buildah-debuginfo-2:1.41.6-1.el9_7.ppc64le.rpm
Red Hat Enterprise Linux9s390xbuildah-debuginfo2:1.41.6-1.el9_7buildah-debuginfo-2:1.41.6-1.el9_7.s390x.rpm
Red Hat Enterprise Linux9x86_64buildah-debuginfo2:1.41.6-1.el9_7buildah-debuginfo-2:1.41.6-1.el9_7.x86_64.rpm
Red Hat Enterprise Linux9aarch64buildah-debugsource2:1.41.6-1.el9_7buildah-debugsource-2:1.41.6-1.el9_7.aarch64.rpm
Red Hat Enterprise Linux9ppc64lebuildah-debugsource2:1.41.6-1.el9_7buildah-debugsource-2:1.41.6-1.el9_7.ppc64le.rpm
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08 Jul 2026 23:59Current
7.1High risk
Vulners AI Score7.1
CVSS 3.14.3
EPSS0.00419
SSVC
CWE-770
archive tarsparse regionspax headermemory allocationdenial service
5