{"id":"AZL-96891","summary":"CVE-2026-55894 affecting package capstone 4.0.2-4","details":"Capstone is a disassembly framework. In 6.0.0-Alpha9 and earlier, Capstone's arch/SH/SHDisassembler.c sh_disassemble() function computes an idx value from a raw 16-bit instruction without ensuring it is within the active mode-specific decode[] function-pointer table. An application using CS_ARCH_SH with CS_MODE_SH2A or CS_MODE_SH4A and CS_MODE_SHFPU can pass crafted bytecode through cs_disasm_iter() or cs_disasm(), causing the decode[idx] test to read outside the table and terminate the process with a segmentation fault. No code execution or information disclosure was demonstrated. This issue is fixed in version 6.0.0-Alpha10.","modified":"2026-08-30T05:24:52Z","published":"2026-08-20T22:17:22Z","upstream":["CVE-2026-55894"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55894"}],"affected":[{"package":{"name":"capstone","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/capstone"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"4.0.2-4"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-96891.json"}}],"schema_version":"1.9.0"}