UNKNOWN Go
Unbounded allocation when parsing GNU sparse map in archive/tar
GO-2025-4014 · BIT-golang-2025-58183 · CVE-2025-58183
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Description
tar.Reader does not set a maximum size on the number of sparse region data blocks in GNU tar pax 1.0 sparse files. A maliciously-crafted archive containing a large number of sparse regions can cause a Reader to read an unbounded amount of data from the archive into memory. When reading from a compressed source, a small compressed input can result in large allocations.
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