{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-55095","assignerOrgId":"e51fbebd-6053-4e49-959f-1b94eeb69a2c","state":"PUBLISHED","assignerShortName":"eclipse","dateReserved":"2025-08-06T18:56:43.458Z","datePublished":"2026-01-27T15:34:47.755Z","dateUpdated":"2026-01-27T15:58:14.494Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Eclipse ThreadX - USBX","repo":"https://github.com/eclipse-threadx/usbx","vendor":"Eclipse Foundation","versions":[{"lessThanOrEqual":"6.4.2","status":"affected","version":"0","versionType":"semver"}]}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"The function <code>_ux_host_class_storage_media_mount()</code>&nbsp;is responsible for mounting partitions on a USB mass storage device. When it encounters an extended partition entry in the partition table, it recursively calls itself to mount the next logical partition.<br><br>This recursion occurs in <code>_ux_host_class_storage_partition_read()</code>, which parses up to four partition entries. If an extended partition is found (with type <code>UX_HOST_CLASS_STORAGE_PARTITION_EXTENDED</code>&nbsp;or <code>EXTENDED_LBA_MAPPED</code>), the code invokes:<br><code><code>            _ux_host_class_storage_media_mount(storage, sector + _ux_utility_long_get(...));<br>\n</code></code><br>There is no limit on the recursion depth or tracking of visited sectors. As a result, a malicious or malformed disk image can include cyclic or excessively deep chains of extended partitions, causing the function to recurse until stack overflow occurs.<br><br>"}],"value":"The function _ux_host_class_storage_media_mount() is responsible for mounting partitions on a USB mass storage device. When it encounters an extended partition entry in the partition table, it recursively calls itself to mount the next logical partition.\n\nThis recursion occurs in _ux_host_class_storage_partition_read(), which parses up to four partition entries. If an extended partition is found (with type UX_HOST_CLASS_STORAGE_PARTITION_EXTENDED or EXTENDED_LBA_MAPPED), the code invokes:\n            _ux_host_class_storage_media_mount(storage, sector + _ux_utility_long_get(...));\n\n\nThere is no limit on the recursion depth or tracking of visited sectors. As a result, a malicious or malformed disk image can include cyclic or excessively deep chains of extended partitions, causing the function to recurse until stack overflow occurs."}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"LOW","baseScore":4.2,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","description":"CWE-121  Stack-based Buffer Overflow","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-674","description":"CWE-674 Uncontrolled Recursion","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"e51fbebd-6053-4e49-959f-1b94eeb69a2c","shortName":"eclipse","dateUpdated":"2026-01-27T15:34:47.755Z"},"references":[{"url":"https://github.com/eclipse-threadx/usbx/security/advisories/GHSA-qfmp-wch9-rpv2"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.5.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-27T15:57:28.543629Z","id":"CVE-2025-55095","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-01-27T15:58:14.494Z"}}]}}