{"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": "2026-03-25T13:48:53.136Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-03-25T13:00:58.783Z"}, "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", "product": "cryptodev-linux", "repo": "https://github.com/cryptodev-linux/cryptodev-linux", "vendor": "cryptodev-linux", "versions": [{"lessThanOrEqual": "1.14", "status": "affected", "version": "0", "versionType": "semver"}]}], "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": ["patch"]}, {"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"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-28529", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-03-25T13:47:38.970778Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-25T13:48:12.300Z"}}], "cna": {"tags": ["x_open-source"], "title": "cryptodev-linux <= 1.14 get_userbuf Use After Free LPE", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "finder", "value": "nasm"}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.5, "Automatable": "NOT_DEFINED", "attackVector": "LOCAL", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"repo": "https://github.com/cryptodev-linux/cryptodev-linux", "vendor": "cryptodev-linux", "product": "cryptodev-linux", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "1.14"}], "defaultStatus": "unknown"}], "references": [{"url": "https://nasm.re/posts/cryptodev-linux-vuln/", "tags": ["technical-description", "exploit"]}, {"url": "https://gist.github.com/n4sm/0fd2479e0c23e0fa2f192cd8fda45750", "tags": ["exploit"]}, {"url": "https://github.com/cryptodev-linux/cryptodev-linux/pull/104", "tags": ["patch"]}, {"url": "https://www.vulncheck.com/advisories/cryptodev-linux-get-userbuf-use-after-free-lpe", "tags": ["third-party-advisory"]}], "x_generator": {"engine": "Vulnogram 0.5.0"}, "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "Use After Free (CWE-416)"}]}], "providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-03-25T13:00:58.783Z"}}}, "cveMetadata": {"cveId": "CVE-2026-28529", "state": "PUBLISHED", "dateUpdated": "2026-03-25T13:48:53.136Z", "dateReserved": "2026-02-27T21:07:55.468Z", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "datePublished": "2026-03-25T13:00:58.783Z", "assignerShortName": "VulnCheck"}, "dataVersion": "5.2"}

{"cveTags": [], "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."}], "id": "CVE-2026-28529", "lastModified": "2026-03-25T15:41:33.977", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.5, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}]}, "published": "2026-03-25T14:16:33.690", "references": [{"source": "disclosure@vulncheck.com", "url": "https://gist.github.com/n4sm/0fd2479e0c23e0fa2f192cd8fda45750"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/cryptodev-linux/cryptodev-linux/pull/104"}, {"source": "disclosure@vulncheck.com", "url": "https://nasm.re/posts/cryptodev-linux-vuln/"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/cryptodev-linux-get-userbuf-use-after-free-lpe"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "disclosure@vulncheck.com", "type": "Primary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-03-25T14:36:37.786426+00:00", "value": {"mitigation_remediation": ["Update to cryptodev-linux version 1.15 or later, if available. If a newer release is not yet available, apply the patch referenced in the pull request linked in the advisory."], "summary": {"action": "Immediate Patch", "impact": "Local Privilege Escalation"}, "threat_synthesis": {"affected_systems": "The vulnerability affects the cryptodev-linux package from the cryptodev-linux vendor. Any installation of cryptodev-linux version 1.14 or earlier is impacted. The driver exposes its functionality through the /dev/crypto interface, which is commonly used by local applications for cryptographic operations.", "description_and_impact": "cryptodev-linux drivers version 1.14 and earlier contain a page reference handling flaw in the get_userbuf function. The error allows the driver to decrement reference counts of pages multiple times, resulting in a use\u2011after\u2011free condition. This flaw is mapped to CWE\u2011416 and can be exploited by a local user to gain elevated privileges on the system.", "risk_and_exploitability": "The CVSS score of 8.5 indicates a high severity condition. Although the EPSS score is not available, the lack of a CISA KEV listing does not diminish the potential for exploitation. Attackers only need local access to the /dev/crypto interface, a condition that is likely satisfied on most systems using the driver. Successful exploitation results in local privilege escalation, potentially allowing the attacker to execute arbitrary code with elevated permissions."}}}}, "created": "2026-03-25T21:31:17.277747+00:00", "updated": "2026-03-25T21:31:17.277781+00:00", "vendors": []}