Vulnerabilities CVE-2026-54417

CVE-2026-54417

High

Open

TLP:CLEAR

Integer Overflow in rxi/microtar mtar_next() Causes Infinite Loop DoS

NVD CVE.org

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Description

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.

Details

CVSS Score: 7.5
EPSS Score ⓘ: 0.42%

34.6th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Confidence: 90%
Published: Jun 17, 2026
Last Modified: Aug 10, 2026

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