156 lines
6.8 KiB
JSON
156 lines
6.8 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-55893",
|
|
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "GitHub_M",
|
|
"dateReserved": "2026-06-17T16:59:42.760Z",
|
|
"datePublished": "2026-08-20T21:32:46.718Z",
|
|
"dateUpdated": "2026-08-21T21:45:29.340Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"title": "Capstone SH disassembler `set_reg_n` heap buffer overflow via crafted SH2A FPU bytecode",
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"cweId": "CWE-122",
|
|
"lang": "en",
|
|
"description": "CWE-122: Heap-based Buffer Overflow",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV4_0": {
|
|
"attackVector": "LOCAL",
|
|
"attackComplexity": "HIGH",
|
|
"attackRequirements": "PRESENT",
|
|
"privilegesRequired": "NONE",
|
|
"userInteraction": "PASSIVE",
|
|
"vulnConfidentialityImpact": "HIGH",
|
|
"vulnIntegrityImpact": "HIGH",
|
|
"vulnAvailabilityImpact": "HIGH",
|
|
"subConfidentialityImpact": "NONE",
|
|
"subIntegrityImpact": "NONE",
|
|
"subAvailabilityImpact": "NONE",
|
|
"baseScore": 7.3,
|
|
"baseSeverity": "HIGH",
|
|
"vectorString": "CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
|
|
"version": "4.0"
|
|
}
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"name": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-3hpv-wr3j-rxwh",
|
|
"tags": [
|
|
"x_refsource_CONFIRM"
|
|
],
|
|
"url": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-3hpv-wr3j-rxwh"
|
|
},
|
|
{
|
|
"name": "https://github.com/capstone-engine/capstone/pull/2968",
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://github.com/capstone-engine/capstone/pull/2968"
|
|
},
|
|
{
|
|
"name": "https://github.com/capstone-engine/capstone/pull/2969",
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://github.com/capstone-engine/capstone/pull/2969"
|
|
},
|
|
{
|
|
"name": "https://github.com/capstone-engine/capstone/commit/09e76802380b9e94d9720c44458d9d5282219e7e",
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://github.com/capstone-engine/capstone/commit/09e76802380b9e94d9720c44458d9d5282219e7e"
|
|
},
|
|
{
|
|
"name": "https://github.com/capstone-engine/capstone/commit/e17ee44a8307ea33375b4727ac4f987650bf7bed",
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://github.com/capstone-engine/capstone/commit/e17ee44a8307ea33375b4727ac4f987650bf7bed"
|
|
},
|
|
{
|
|
"name": "https://github.com/capstone-engine/capstone/releases/tag/6.0.0-Alpha10",
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://github.com/capstone-engine/capstone/releases/tag/6.0.0-Alpha10"
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"vendor": "capstone-engine",
|
|
"product": "capstone",
|
|
"versions": [
|
|
{
|
|
"version": "< 6.0.0-Alpha10",
|
|
"status": "affected"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"providerMetadata": {
|
|
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
|
|
"shortName": "GitHub_M",
|
|
"dateUpdated": "2026-08-20T21:32:46.718Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "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."
|
|
}
|
|
],
|
|
"source": {
|
|
"advisory": "GHSA-3hpv-wr3j-rxwh",
|
|
"discovery": "UNKNOWN"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-08-21T21:00:22.370190Z",
|
|
"id": "CVE-2026-55893",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "total"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-08-21T21:45:29.340Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |