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).
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History
Wed, 14 Oct 2026 07:30:00 +0000
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Status: PUBLISHED
Assigner: mitre
Published: 2018-12-26T18:00:00.000Z
Updated: 2026-10-14T06:30:41.972Z
Reserved: 2018-12-26T00:00:00.000Z
Link: CVE-2018-20482
No data.
Status : Modified
Published: 2018-12-26T18:29:00.373
Modified: 2026-10-14T07:16:43.667
Link: CVE-2018-20482