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7.5Hoch

CVE-2026-124737Busybox: heap buffer overflow in the tftp client on fallback to the default block size

Red Hat Red Hat Enterprise Linux 6; Red Hat Red Hat Hardened Images Veröffentlicht: (vor 11 Stunden)

Beschreibung

A flaw was found in BusyBox. When the TFTP (Trivial File Transfer Protocol) client requests a custom small block size and receives a standard response, it falls back to the default block size without resizing the allocated memory buffer. A malicious TFTP server can exploit this issue by sending standard-sized network packets during a transfer, causing a heap buffer overflow. This flaw allows an attacker to achieve arbitrary code execution or cause a Denial of Service (DoS) by crashing the application.

Schwachstellentyp (CWE): CWE-787

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

HerstellerProduktVersionen
Red Hat Red Hat Enterprise Linux 6 all versions
Red Hat Red Hat Hardened Images all versions

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