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Details of issue NIXPKGS-2026-2251

NIXPKGS-2026-2251
published 13 hours ago
Capstone has a NULL Pointer Dereference with 3DNow! opcodes
Permalink 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)
updated 13 hours ago by @LeSuisse Activity log
  • Created suggestion 1 day, 17 hours ago
  • @LeSuisse ignored
    4 packages
    • python314Packages.capstone_4
    • python313Packages.capstone_4
    • python314Packages.capstone
    • python313Packages.capstone
    1 day, 15 hours ago
  • @LeSuisse accepted 1 day, 15 hours ago
  • @LeSuisse published on GitHub 13 hours ago
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.

Affected products

capstone
  • ==< 6.0.0-Alpha8
  • ==< 5.0.8

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Ignored packages (4)

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