{ "containers": { "cna": { "affected": [ { "product": "Shiftfs in the Linux kernel", "vendor": "Ubuntu", "versions": [ { "changes": [ { "at": "5.3.0-22.24", "status": "unaffected" } ], "lessThan": "5.3 kernel*", "status": "affected", "version": "5.3.0-11.12", "versionType": "custom" }, { "lessThan": "5.0.0-35.38", "status": "affected", "version": "5.0 kernel", "versionType": "custom" } ] } ], "credits": [ { "lang": "en", "value": "Jann Horn of Google Project Zero" } ], "datePublic": "2019-11-12T00:00:00.000Z", "descriptions": [ { "lang": "en", "value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() calls fdget(oldfd), then without further checks passes the resulting file* into shiftfs_real_fdget(), which casts file->private_data, a void* that points to a filesystem-dependent type, to a \"struct shiftfs_file_info *\". As the private_data is not required to be a pointer, an attacker can use this to cause a denial of service or possibly execute arbitrary code." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "version": "3.1" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-843", "description": "CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2020-04-23T23:55:24.000Z", "orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc", "shortName": "canonical" }, "references": [ { "tags": [ "x_refsource_MISC" ], "url": "https://usn.ubuntu.com/usn/usn-4183-1" }, { "tags": [ "x_refsource_MISC" ], "url": "https://usn.ubuntu.com/usn/usn-4184-1" }, { "tags": [ "x_refsource_MISC" ], "url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=5df147c8140efc71ac0879ae3b0057f577226d4c" } ], "source": { "defect": [ "https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1850867" ], "discovery": "EXTERNAL" }, "title": "Type confusion in shiftfs", "x_generator": { "engine": "Vulnogram 0.0.9" }, "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security@ubuntu.com", "DATE_PUBLIC": "2019-11-12 18:00:00 UTC", "ID": "CVE-2019-15792", "STATE": "PUBLIC", "TITLE": "Type confusion in shiftfs" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Shiftfs in the Linux kernel", "version": { "version_data": [ { "version_affected": ">=", "version_name": "5.3 kernel", "version_value": "5.3.0-11.12" }, { "version_affected": "<", "version_name": "5.3 kernel", "version_value": "5.3.0-22.24" }, { "version_affected": "<", "version_name": "5.0 kernel", "version_value": "5.0.0-35.38" } ] } } ] }, "vendor_name": "Ubuntu" } ] } }, "credit": [ { "lang": "eng", "value": "Jann Horn of Google Project Zero" } ], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() calls fdget(oldfd), then without further checks passes the resulting file* into shiftfs_real_fdget(), which casts file->private_data, a void* that points to a filesystem-dependent type, to a \"struct shiftfs_file_info *\". 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