CVE-2026-55893
Przepełnienie bufora w Capstone umożliwia zdalne wykonanie kodu i awarię procesu.
Capstone is a disassembly framework. In 6.0.0-Alpha9 and earlier, Capstone's arch/SH/SHDisassembler.c SH floating-point decoders such as opFADD, opFMUL, and opFSUB call set_reg() and set_reg_n() using sh_info.op.op_count without checking the fixed-size operands[] array. Repeated crafted instructions processed through cs_disasm_iter() or cs_disasm() with CS_ARCH_SH, CS_MODE_SH2A or CS_MODE_SH4A, CS_MODE_SHFPU, and CS_OPT_DETAIL can increment the operand count beyond the 176-byte sh_info allocation and perform a four-byte heap buffer overflow write. The corruption can crash the process and may enable code execution depending on heap layout. This issue is fixed in version 6.0.0-Alpha10.
| Źródło | Wartość |
|---|---|
| NVD – CVSS | 0.0 |
| CISA KEV (aktywnie wykorzystywane) | Nie |
| FIRST EPSS (prawdopodobieństwo exploita) | 0.1% |
| Opublikowano (NVD) | 2026-08-20 22:17:22 UTC |
| Ostatnia modyfikacja (NVD) | 2026-08-21 22:16:41 UTC |
- https://github.com/capstone-engine/capstone/commit/09e76802380b9e94d9720c44458d9d5282219e7e (security-advisories@github.com)
- https://github.com/capstone-engine/capstone/commit/e17ee44a8307ea33375b4727ac4f987650bf7bed (security-advisories@github.com)
- https://github.com/capstone-engine/capstone/pull/2968 (security-advisories@github.com)
- https://github.com/capstone-engine/capstone/pull/2969 (security-advisories@github.com)
- https://github.com/capstone-engine/capstone/releases/tag/6.0.0-Alpha10 (security-advisories@github.com)
- https://github.com/capstone-engine/capstone/security/advisories/GHSA-3hpv-wr3j-rxwh (security-advisories@github.com)