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wid-sec-w-2026-0769  ·  Published 2026-03-17  ·  View on BSI CERT-Bund ↗

Red Hat Enterprise Linux (capstone) and OpenShift (rhcos): Multiple Vulnerabilities

CVSS 4.8 MEDIUM

Risk Summary

Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, an unchecked vsnprintf return in SStream_concat lets a malicious cs_opt_mem.vsnprintf drive SStream’s index negative or past the end, leading to a stack buffer underflow/overflow when the next write occurs. Commit 2c7797182a1618be12017d7d41e0b6581d5d529e fixes the issue.

Affected Vendors

Oracle RESF Red Hat SUSE

Affected Products (4)

Red Hat · Enterprise Linux capstone <9
Red Hat · Enterprise Linux capstone 9
Red Hat · Enterprise Linux capstone = 10
Red Hat · OpenShift Container Platform rhcos = 4

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