{"id":"CVE-2018-20482","revision":"715176e344ae45f18724621aa519bcfe","records":[{"revision":"715176e344ae45f18724621aa519bcfe","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2018-20482","aliases":[],"title":"GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by modifying a file that is supposed to …","description":"GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by modifying a file that is supposed to be archived by a different user's process (e.g., a system backup running as root).","state":0,"publishedAt":"2018-12-26T18:00:00+00:00","modifiedAt":"2026-10-14T06:30:41.972+00:00","affected":[{"ecosystem":"Vendor product","name":"n/a","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"n/a\",\n                    \"vendor\": \"n/a\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"n/a\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug","http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca1a49294bff454","https://lists.debian.org/debian-lts-announce/2018/12/msg00023.html","https://news.ycombinator.com/item?id=18745431","http://www.securityfocus.com/bid/106354","https://security.gentoo.org/glsa/201903-05","http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html","https://twitter.com/thatcks/status/1076166645708668928","http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html","https://lists.debian.org/debian-lts-announce/2021/11/msg00025.html"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2018-20482","license":"CVE Program Terms of Use","key":"cve-program:CVE-2018-20482","identifiers":["CVE-2018-20482"]},"retained":false,"historicalAffected":[]}],"coverage":[]}