{"id":"CVE-2026-54417","summary":"Integer Overflow in rxi/microtar mtar_next() Causes Infinite Loop DoS","details":"An integer overflow in the mtar_next function in src/microtar.c in rxi microtar 0.1.0 allows a remote attacker to cause a denial of service (uncontrolled CPU consumption / infinite loop) via a crafted tar archive. mtar_next computes the offset to the next record as round_up(h.size, 512) + sizeof(mtar_raw_header_t) using 32-bit arithmetic.","modified":"2026-08-12T03:51:20.294287840Z","published":"2026-06-17T13:25:54.502Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54417.json","cna_assigner":"TuranSec","cwe_ids":["CWE-190","CWE-835"]},"references":[{"type":"WEB","url":"https://github.com/rxi/microtar/blob/master/src/microtar.c#L239"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54417.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54417"},{"type":"PACKAGE","url":"https://github.com/rxi/microtar"},{"type":"ARTICLE","url":"https://raw.githubusercontent.com/rxi/microtar/master/src/microtar.c"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/rxi/microtar","events":[{"introduced":"956791770defa4d06696b30db276e88a09ad3538"},{"last_affected":"956791770defa4d06696b30db276e88a09ad3538"}],"database_specific":{"extracted_events":[{"introduced":"0.1.0"},{"last_affected":"0.1.0"}],"source":"AFFECTED_FIELD"}}],"versions":["0.1.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54417.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}