CVE-2018-20449

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:4.14.90:*:*:*:*:*:*:*", "matchCriteriaId": "0AFADFA1-25D0-4DF0-8D61-E8C24E524E68", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:netapp:element_software_management_node:-:*:*:*:*:*:*:*", "matchCriteriaId": "E902EEC6-9A41-4FBC-8D81-891DF846A5CB", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The hidma_chan_stats function in drivers/dma/qcom/hidma_dbg.c in the Linux kernel 4.14.90 allows local users to obtain sensitive address information by reading \"callback=\" lines in a debugfs file."}, {"lang": "es", "value": "La funci\u00f3n hidma_chan_stats en drivers/dma/qcom/hidma_dbg.c en el kernel de Linux, en su versi\u00f3n 4.14.90, permite a los usuarios locales obtener informaci\u00f3n sensible de direcciones, leyendo l\u00edneas \"callback=\" en un archivo debugfs."}], "id": "CVE-2018-20449", "lastModified": "2026-06-17T01:52:51.827", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 2.1, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-04-04T16:29:00.383", "references": [{"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://elixir.bootlin.com/linux/v4.14.90/source/drivers/dma/qcom/hidma_dbg.c#L92"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20190502-0002/"}, {"source": "cve@mitre.org", "url": "https://www.mail-archive.com/debian-security-tracker%40lists.debian.org/msg03808.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://elixir.bootlin.com/linux/v4.14.90/source/drivers/dma/qcom/hidma_dbg.c#L92"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20190502-0002/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.mail-archive.com/debian-security-tracker%40lists.debian.org/msg03808.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: reading \"callback=\" lines in a debugfs file in drivers/dma/qcom/hidma_dbg.c results in information disclosure", "id": "1696604", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1696604"}, "csaw": false, "cvss3": {"cvss3_base_score": "1.9", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N", "status": "draft"}, "cwe": "CWE-200", "details": ["The hidma_chan_stats function in drivers/dma/qcom/hidma_dbg.c in the Linux kernel 4.14.90 allows local users to obtain sensitive address information by reading \"callback=\" lines in a debugfs file.", "The hidma_chan_stats() function in the drivers/dma/qcom/hidma_dbg.c file in the Linux kernel allows local users to obtain sensitive address information by reading \"callback=\" lines in a debugfs file. By default, the debugfs filesystem access is restricted so only a privileged user can access it."], "name": "CVE-2018-20449", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-alt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2019-01-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-20449\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-20449"], "threat_severity": "Low"}

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