CVE-2026-68908

01/תיאור (מקור, אנגלית)

libIEC61850 is an open-source implementation of IEC 61850 client and server protocols including MMS, GOOSE, Sampled Values, and R-Session. Prior to 1.6.2, Reporting_RCBWriteAccessHandler accepts an RptID longer than 129 bytes in the report-control-block write path. When GI later causes sendNextReportEntrySegment to serialize the report, the function wraps rptIdBuf[130] as a temporary MmsValue and passes it to MmsValue_setVisibleString. The setter's resize path frees the stack-backed buffer, allowing a remote client to trigger an invalid free and server crash by writing the oversized RptID and then generating a report. This issue is fixed in version 1.6.2.

02/קישורים4

• github.com/mz-automation/libiec61850/commit/5b2a69f44256b85489‮…
• github.com/mz-automation/libiec61850/releases/tag/v1.6.2
• github.com/mz-automation/libiec61850/security/advisories/GHSA-‮…
• github.com/mz-automation/libiec61850/security/advisories/GHSA-‮…