{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-62250", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-13T17:09:57.573Z", "datePublished": "2026-10-30T20:37:47.927Z", "dateUpdated": "2026-10-30T20:37:47.927Z"}, "containers": {"cna": {"title": "LibreDWG: unbounded allocation in pre-R13 DWG entity decoding", "problemTypes": [{"descriptions": [{"cweId": "CWE-835", "lang": "en", "description": "CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-400", "lang": "en", "description": "CWE-400: Uncontrolled Resource Consumption", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/LibreDWG/libredwg/security/advisories/GHSA-7625-26gc-xqvp", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/LibreDWG/libredwg/security/advisories/GHSA-7625-26gc-xqvp"}, {"name": "https://github.com/LibreDWG/libredwg/issues/1131", "tags": ["x_refsource_MISC"], "url": "https://github.com/LibreDWG/libredwg/issues/1131"}, {"name": "https://github.com/LibreDWG/libredwg/commit/4e14952c43be5b8feff6e54a61af3425d6ca95a4", "tags": ["x_refsource_MISC"], "url": "https://github.com/LibreDWG/libredwg/commit/4e14952c43be5b8feff6e54a61af3425d6ca95a4"}, {"name": "https://github.com/LibreDWG/libredwg/releases/tag/0.14.8413", "tags": ["x_refsource_MISC"], "url": "https://github.com/LibreDWG/libredwg/releases/tag/0.14.8413"}], "affected": [{"vendor": "LibreDWG", "product": "libredwg", "versions": [{"version": "< 0.14.8413", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-30T20:37:47.927Z"}, "descriptions": [{"lang": "en", "value": "LibreDWG is a free C library to read and write DWG files. Prior to 0.14.8413, a crafted pre-R13 DWG can make `decode_preR13_entities()` in `src/decode.c` enter a nonterminating loop that allocates a new object each iteration. `decode_preR13` in `src/decode_r11.c` computes `size` from the raw file-controlled `entities_start` and `entities_end` header bounds; the callee clamps `end` to `dat->size` but never recalculates `size`. At `end` of input, `bit_read_RC` and `bit_read_RS` stop advancing `dat->byte`, the overflow guard fails because `end` equals `dat->size`, and the no-advance check compares against `oldpos` saved before the loop instead of the previous iteration. This leaves repeated allocation of `dwg->object` entries until allocation fails or the process is OOM-killed, not merely a constant-memory CPU hang. The defect remains after the clamping and no-progress changes associated with the earlier issue 1131. Applications and tools calling `dwg_read_file()` on untrusted files, including `dwg2dxf`, `dwgread` and `dwg2svg`, can suffer denial of service when a user or automated pipeline opens a malformed file; no attacker credentials are required. This issue is fixed in repository nightly version 0.14.8413."}], "source": {"advisory": "GHSA-7625-26gc-xqvp", "discovery": "UNKNOWN"}}}}

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