Bug 2504488 (CVE-2026-47143) - CVE-2026-47143 capstone: Capstone: Denial of Service vulnerability via crafted input
Summary: CVE-2026-47143 capstone: Capstone: Denial of Service vulnerability via crafte...
Keywords:
Status: NEW
Alias: CVE-2026-47143
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2507589 2507590 2507591
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-21 21:02 UTC by OSIDB Bzimport
Modified: 2026-07-27 17:48 UTC (History)
3 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-07-21 21:02:35 UTC 
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 <modrm> <imm8>`. Versions 6.0.0-Alpha8 and 5.0.8 patch the issue.
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