{"schema_version":"1.3.1","id":"GO-2025-4014","modified":"2025-10-29T21:51:04Z","published":"2025-10-29T21:51:04Z","aliases":["CVE-2025-58183","CVE-2025-58183"],"summary":"Unbounded allocation when parsing GNU sparse map in archive/tar","details":"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.","affected":[{"package":{"name":"stdlib","ecosystem":"Go"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.24.8"},{"introduced":"1.25.0"},{"fixed":"1.25.2"}]}],"ecosystem_specific":{"imports":[{"path":"archive/tar","symbols":["Reader.Next","readGNUSparseMap1x0"]}]}}],"references":[{"type":"FIX","url":"https://go.dev/cl/709861"},{"type":"REPORT","url":"https://go.dev/issue/75677"},{"type":"WEB","url":"https://groups.google.com/g/golang-announce/c/4Emdl2iQ_bI"}],"credits":[{"name":"Harshit Gupta (Mr HAX)"}],"database_specific":{"url":"https://pkg.go.dev/vuln/GO-2025-4014","review_status":"REVIEWED"}}