{"containers":{"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"datePublic":"2018-06-21T00:00:00.000Z","descriptions":[{"lang":"en","value":"An issue was discovered in the Linux kernel through 4.17.2. vbg_misc_device_ioctl() in drivers/virt/vboxguest/vboxguest_linux.c reads the same user data twice with copy_from_user. The header part of the user data is double-fetched, and a malicious user thread can tamper with the critical variables (hdr.size_in and hdr.size_out) in the header between the two fetches because of a race condition, leading to severe kernel errors, such as buffer over-accesses. This bug can cause a local denial of service and information leakage."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2018-06-21T23:57:01.000Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre"},"references":[{"tags":["x_refsource_MISC"],"url":"https://bugzilla.kernel.org/show_bug.cgi?id=200131"},{"tags":["x_refsource_MISC"],"url":"https://github.com/torvalds/linux/commit/bd23a7269834dc7c1f93e83535d16ebc44b75eba"},{"tags":["x_refsource_MISC"],"url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bd23a7269834dc7c1f93e83535d16ebc44b75eba"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2018-12633","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"An issue was discovered in the Linux kernel through 4.17.2. vbg_misc_device_ioctl() in drivers/virt/vboxguest/vboxguest_linux.c reads the same user data twice with copy_from_user. The header part of the user data is double-fetched, and a malicious user thread can tamper with the critical variables (hdr.size_in and hdr.size_out) in the header between the two fetches because of a race condition, leading to severe kernel errors, such as buffer over-accesses. This bug can cause a local denial of service and information leakage."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"https://bugzilla.kernel.org/show_bug.cgi?id=200131","refsource":"MISC","url":"https://bugzilla.kernel.org/show_bug.cgi?id=200131"},{"name":"https://github.com/torvalds/linux/commit/bd23a7269834dc7c1f93e83535d16ebc44b75eba","refsource":"MISC","url":"https://github.com/torvalds/linux/commit/bd23a7269834dc7c1f93e83535d16ebc44b75eba"},{"name":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bd23a7269834dc7c1f93e83535d16ebc44b75eba","refsource":"MISC","url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bd23a7269834dc7c1f93e83535d16ebc44b75eba"}]}}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-05T08:38:06.382Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_MISC","x_transferred"],"url":"https://bugzilla.kernel.org/show_bug.cgi?id=200131"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/torvalds/linux/commit/bd23a7269834dc7c1f93e83535d16ebc44b75eba"},{"tags":["x_refsource_MISC","x_transferred"],"url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bd23a7269834dc7c1f93e83535d16ebc44b75eba"}]}]},"cveMetadata":{"assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","cveId":"CVE-2018-12633","datePublished":"2018-06-22T00:00:00.000Z","dateReserved":"2018-06-21T00:00:00.000Z","dateUpdated":"2024-08-05T08:38:06.382Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}