{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-28529", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-02-27T21:07:55.468Z", "datePublished": "2026-03-25T13:00:58.783Z", "dateUpdated": "2026-07-14T18:39:47.009Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-07-14T18:39:47.009Z" }, "title": "cryptodev-linux <= 1.14 get_userbuf Use After Free LPE", "descriptions": [ { "lang": "en", "value": "cryptodev-linux version 1.14 and prior contain a page reference handling flaw in the get_userbuf function of the /dev/crypto device driver that allows local users to trigger use-after-free conditions. Attackers with access to the /dev/crypto interface can repeatedly decrement reference counts of controlled pages to achieve local privilege escalation." } ], "tags": [ "x_open-source" ], "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-416", "description": "Use After Free (CWE-416)", "type": "CWE" } ] } ], "affected": [ { "defaultStatus": "unknown", "packageURL": "pkg:github/cryptodev-linux/cryptodev-linux", "product": "cryptodev-linux", "repo": "https://github.com/cryptodev-linux/cryptodev-linux", "vendor": "cryptodev-linux", "versions": [ { "lessThanOrEqual": "1.14", "status": "affected", "version": "0", "versionType": "custom" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:cryptodev-linux:cryptodev-linux:*:*:*:*:*:*:*:*", "versionEndIncluding": "1.14" } ] } ] } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.5, "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N" } } ], "references": [ { "tags": [ "technical-description", "exploit" ], "url": "https://nasm.re/posts/cryptodev-linux-vuln/" }, { "tags": [ "exploit" ], "url": "https://gist.github.com/n4sm/0fd2479e0c23e0fa2f192cd8fda45750" }, { "url": "https://github.com/cryptodev-linux/cryptodev-linux/pull/104", "tags": [ "issue-tracking" ] }, { "url": "https://www.vulncheck.com/advisories/cryptodev-linux-get-userbuf-use-after-free-lpe", "tags": [ "third-party-advisory" ] } ], "credits": [ { "lang": "en", "type": "finder", "value": "nasm" } ], "source": { "discovery": "EXTERNAL" }, "x_generator": { "engine": "Vulnogram 0.5.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-03-25T13:47:38.970778Z", "id": "CVE-2026-28529", "options": [ { "Exploitation": "poc" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-25T13:48:53.136Z" } } ] } }