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CVE-2025-67873 — Capstone doesn't check Skipdata length, leading to cs_insn.bytes heap buffer overflow

Affected: capstone-engine capstone

Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow in the disassembly path. Commit cbef767ab33b82166d263895f24084b75b316df3 fixes the issue.

RHSA-2026:4898 — Red Hat Security Advisory: capstone security update

capstone: Capstone: Heap buffer overflow via skipdata callback allows denial of service or arbitrary code execution. capstone: Capstone: Memory corruption via unchecked vsnprintf return

RHSA-2026:5123 — Red Hat Security Advisory: capstone security update

capstone: Capstone: Heap buffer overflow via skipdata callback allows denial of service or arbitrary code execution. capstone: Capstone: Memory corruption via unchecked vsnprintf return