Nixpkgs security tracker
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CVE-2026-47143
5.1 MEDIUM
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Local (L)
- Attack Complexity (AC): High (H)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Scope (S): Unchanged (U)
- Confidentiality (C): None (N)
- Integrity (I): None (N)
- Availability (A): High (H)
- Modified Attack Vector (MAV): Local (L)
- Modified Attack Complexity (MAC): High (H)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): None (N)
- Modified Confidentiality (MC): None (N)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): None (N)
- Modified Availability (MA): High (H)
Activity log
- Created suggestion
Capstone has a NULL Pointer Dereference with 3DNow! opcodes
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.
References
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https://github.com/capstone-engine/capstone/pull/2924 x_refsource_MISC
Affected products
capstone
- ==< 5.0.8
- ==< 6.0.0-Alpha8
Matching in nixpkgs
pkgs.capstone
Advanced disassembly library
pkgs.capstone_4
Advanced disassembly library
pkgs.python313Packages.capstone
Python bindings for Capstone disassembly engine
pkgs.python314Packages.capstone
Python bindings for Capstone disassembly engine
pkgs.python313Packages.capstone_4
Python bindings for Capstone disassembly engine
pkgs.python314Packages.capstone_4
Python bindings for Capstone disassembly engine
Package maintainers
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@thoughtpolice Austin Seipp <aseipp@pobox.com>
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@risicle Robert Scott <code@humanleg.org.uk>
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@bennofs Benno Fünfstück <benno.fuenfstueck@gmail.com>