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This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Current Description
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.
** 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."
Metrics
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** 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 sugg
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 `chm
OR
*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
OR
*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Changed
Reference Type
https://access.redhat.com/errata/RHSA-2018:2948 No Types Assigned
https://access.redhat.com/errata/RHSA-2018:2948 Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/3752-1/ No Types Assigned
https://usn.ubuntu.com/3752-1/ Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/3752-2/ No Types Assigned
https://usn.ubuntu.com/3752-2/ Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/3752-3/ No Types Assigned
https://usn.ubuntu.com/3752-3/ Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/3754-1/ No Types Assigned
https://usn.ubuntu.com/3754-1/ Third Party Advisory
OR
*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Added
CPE Configuration
OR
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.18 up to (including) 4.16
Added
CVSS V2
(AV:N/AC:M/Au:S/C:C/I:N/A:N)
Added
CVSS V3
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Added
CWE
CWE-264
Changed
Reference Type
http://www.openwall.com/lists/oss-security/2018/06/26/3 No Types Assigned
http://www.openwall.com/lists/oss-security/2018/06/26/3 Mailing List, Third Party Advisory
Changed
Reference Type
https://github.com/torvalds/linux/commit/a45b599ad808c3c982fdcdc12b0b8611c2f92824 No Types Assigned
https://github.com/torvalds/linux/commit/a45b599ad808c3c982fdcdc12b0b8611c2f92824 Patch, Third Party Advisory
Changed
Reference Type
https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html No Types Assigned
https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html Third Party Advisory
Changed
Reference Type
https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html No Types Assigned
https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html Third Party Advisory
Changed
Reference Type
https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html No Types Assigned
https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/3696-1/ No Types Assigned
https://usn.ubuntu.com/3696-1/ Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/3696-2/ No Types Assigned
https://usn.ubuntu.com/3696-2/ Third Party Advisory
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 already: https://github.com/torvalds/linux/commit/a45b599ad808c3c982fdcdc12b0b8611c2f92824 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
** 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 sugg
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