| Revision Date: | 2018-06-26 | Version: | 1 | | Title: | CVE-2018-1000204 on Ubuntu 18.10 (cosmic) - negligible. | | Description: | ** DISPUTED ** Linux Kernel version 3.18 to 4.16 incorrectly handles an SG_IO ioctl on /dev/sg0 with dxfer_direction=SG_DXFER_FROM_DEV and an empty 6-byte cmdp. This may lead to copying up to 1000 kernel heap pages to the userspace. This has been fixed upstream in https://github.com/torvalds/linux/commit/a45b599ad808c3c982fdcdc12b0b8611c2f92824 already. The problem has limited scope, as users don't usually have permissions to access SCSI devices. On the other hand, e.g. the Nero user manual suggests doing `chmod o+r+w /dev/sg*` to make the devices accessible. NOTE: third parties dispute the relevance of this report, noting that the requirement for an attacker to have both the CAP_SYS_ADMIN and CAP_SYS_RAWIO capabilities makes it "virtually impossible to exploit." It was discovered that an information leak existed in the generic SCSI driver in the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). | | Family: | unix | Class: | vulnerability | | Status: | | Reference(s): | CVE-2018-1000204
| | Platform(s): | Ubuntu 18.10
| Product(s): | | | Definition Synopsis | | Ubuntu 18.10 (cosmic) is installed. AND Package Information
NOT While related to the CVE in some way, the 'linux' package in cosmic is not affected (note: '4.17.0-6.7').
OR NOT While related to the CVE in some way, the 'linux-aws' package in cosmic is not affected (note: '4.15.0-1020.20').
OR NOT While related to the CVE in some way, the 'linux-azure' package in cosmic is not affected (note: '4.18.0-1003.3').
OR NOT While related to the CVE in some way, the 'linux-gcp' package in cosmic is not affected (note: '4.15.0-1018.19').
OR NOT While related to the CVE in some way, the 'linux-kvm' package in cosmic is not affected (note: '4.15.0-1020.20').
OR NOT While related to the CVE in some way, the 'linux-oem' package in cosmic is not affected (note: '4.15.0-1017.20').
OR NOT While related to the CVE in some way, the 'linux-raspi2' package in cosmic is not affected (note: '4.15.0-1021.23').
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