NULL Pointer Dereference Affecting capstone package, versions <0:5.0.8-0.1.hum1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.47% (38th percentile)

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  • Snyk IDSNYK-RHEL10-CAPSTONE-18339941
  • published28 Jul 2026
  • disclosed21 Jul 2026

Introduced: 21 Jul 2026

CVE-2026-47143  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade RHEL:10 capstone to version 0:5.0.8-0.1.hum1 or higher.
This issue was patched in RHSA-2026:43841.

NVD Description

Note: Versions mentioned in the description apply only to the upstream capstone package and not the capstone package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

Capstone is a disassembly framework. Versions prior to 6.0.0-Alpha8 and 5.0.8 have a NULL pointer dereference in modRMRequired() and decode() when disassembling 3DNow! opcodes (0F 0F) in builds compiled with -DCAPSTONE_X86_REDUCE, allowing a remote attacker to crash any application using the reduced X86 Capstone library by supplying a crafted input containing the 4-byte sequence 0F 0F &lt;modrm&gt; &lt;imm8&gt;. Versions 6.0.0-Alpha8 and 5.0.8 patch the issue.

CVSS Base Scores

version 3.1