{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-62958", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-14T22:32:17.732Z", "datePublished": "2026-10-30T20:44:21.663Z", "dateUpdated": "2026-10-30T20:44:21.663Z"}, "containers": {"cna": {"title": "libriscv: Out of bounds read vuln in the ELF parser (Denial of service)", "problemTypes": [{"descriptions": [{"cweId": "CWE-20", "lang": "en", "description": "CWE-20: Improper Input Validation", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-125", "lang": "en", "description": "CWE-125: Out-of-bounds Read", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.9, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/libriscv/libriscv/security/advisories/GHSA-gm4g-6c78-gr3w", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/libriscv/libriscv/security/advisories/GHSA-gm4g-6c78-gr3w"}, {"name": "https://github.com/libriscv/libriscv/commit/61ef9ca82c8876dd80b33780893ba512af780e93", "tags": ["x_refsource_MISC"], "url": "https://github.com/libriscv/libriscv/commit/61ef9ca82c8876dd80b33780893ba512af780e93"}, {"name": "https://github.com/libriscv/libriscv/commit/7bd1c189f9f9d54368cde096b07b194ad680f9fa", "tags": ["x_refsource_MISC"], "url": "https://github.com/libriscv/libriscv/commit/7bd1c189f9f9d54368cde096b07b194ad680f9fa"}, {"name": "https://github.com/libriscv/libriscv/releases/tag/v1.18", "tags": ["x_refsource_MISC"], "url": "https://github.com/libriscv/libriscv/releases/tag/v1.18"}], "affected": [{"vendor": "libriscv", "product": "libriscv", "versions": [{"version": "< 1.18", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-30T20:44:21.663Z"}, "descriptions": [{"lang": "en", "value": "libriscv is a RISC-V sandbox and emulator. Prior to 1.18, a crafted ELF binary can cause out-of-bounds reads in the host emulator. `Memory<W>::binary_loader` checks `PT_LOAD` program-header bounds, but `Memory<W>::serialize_execute_segment` trusts section-header `sh_offset` and `sh_size` when locating `.text` without verifying the file range against `m_binary.size()`; `Memory<W>::lookup()` has a similar section-table problem. Malformed `.text` or `.symtab` offsets can therefore bypass the program-header checks and point outside the binary buffer, crashing rvlinux. With suitable memory layout or integer overflow, out-of-buffer host heap memory may instead be mapped into the guest by `create_execute_segment()`, potentially exposing host memory. The reported reproducer demonstrates a host SIGSEGV, while memory disclosure through grooming is described as possible rather than demonstrated. This issue is fixed in version 1.18."}], "source": {"advisory": "GHSA-gm4g-6c78-gr3w", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "libriscv", "vendor": "libriscv", "versions": [{"status": "affected", "version": "< 1.18"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "libriscv is a RISC-V sandbox and emulator. Prior to 1.18, a crafted ELF binary can cause out-of-bounds reads in the host emulator. `Memory<W>::binary_loader` checks `PT_LOAD` program-header bounds, but `Memory<W>::serialize_execute_segment` trusts section-header `sh_offset` and `sh_size` when locating `.text` without verifying the file range against `m_binary.size()`; `Memory<W>::lookup()` has a similar section-table problem. Malformed `.text` or `.symtab` offsets can therefore bypass the program-header checks and point outside the binary buffer, crashing rvlinux. With suitable memory layout or integer overflow, out-of-buffer host heap memory may instead be mapped into the guest by `create_execute_segment()`, potentially exposing host memory. The reported reproducer demonstrates a host SIGSEGV, while memory disclosure through grooming is described as possible rather than demonstrated. This issue is fixed in version 1.18."}], "id": "CVE-2026-62958", "lastModified": "2026-10-30T21:17:14.840", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.9, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 4.7, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-30T21:17:14.840", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/libriscv/libriscv/commit/61ef9ca82c8876dd80b33780893ba512af780e93"}, {"source": "security-advisories@github.com", "url": "https://github.com/libriscv/libriscv/commit/7bd1c189f9f9d54368cde096b07b194ad680f9fa"}, {"source": "security-advisories@github.com", "url": "https://github.com/libriscv/libriscv/releases/tag/v1.18"}, {"source": "security-advisories@github.com", "url": "https://github.com/libriscv/libriscv/security/advisories/GHSA-gm4g-6c78-gr3w"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-125"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}