CVE-2026-56391
Gravedad CVSS v4.0:
MEDIA
Tipo:
CWE-125
Lectura fuera de límites
Fecha de publicación:
24/07/2026
Última modificación:
24/07/2026
Descripción
*** Pendiente de traducción *** GNU coreutils uniq is vulnerable to an out‑of‑bounds read due to incorrect handling of multibyte input when the -w (--check-chars) option is used. The find_field() function miscalculates the byte length of characters by repeatedly processing a fixed pointer instead of advancing through the input, resulting in an inflated length value. <br />
This incorrect length is later used in a memcmp operation, causing reads beyond the allocated buffer when processing crafted multibyte input.<br />
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When running GNU coreutils uniq with attacker-provided arguments, this behavior leads to a crash and potential adjacent heap memory exposure.<br />
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This issue has been fixed in the commit d64e35a8a4c0e4608321433e0d84d917e4e36371.
Impacto
Puntuación base 4.0
4.60
Gravedad 4.0
MEDIA