{"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"}}}}