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Ubuntu: (Multiple Advisories) (CVE-2018-7755): Linux kernel (HWE) regression

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Ubuntu: (Multiple Advisories) (CVE-2018-7755): Linux kernel (HWE) regression

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
03/08/2018
Created
07/25/2018
Added
07/04/2018
Modified
08/25/2021

Description

An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location of kernel code and data and bypass kernel security protections such as KASLR.

Solution(s)

  • ubuntu-upgrade-linux-image-3-13-0-153-generic
  • ubuntu-upgrade-linux-image-3-13-0-153-generic-lpae
  • ubuntu-upgrade-linux-image-3-13-0-153-lowlatency
  • ubuntu-upgrade-linux-image-3-13-0-153-powerpc-e500
  • ubuntu-upgrade-linux-image-3-13-0-153-powerpc-e500mc
  • ubuntu-upgrade-linux-image-3-13-0-153-powerpc-smp
  • ubuntu-upgrade-linux-image-3-13-0-153-powerpc64-emb
  • ubuntu-upgrade-linux-image-3-13-0-153-powerpc64-smp
  • ubuntu-upgrade-linux-image-4-13-0-1023-raspi2
  • ubuntu-upgrade-linux-image-4-13-0-1031-oem
  • ubuntu-upgrade-linux-image-4-13-0-46-generic
  • ubuntu-upgrade-linux-image-4-13-0-46-generic-lpae
  • ubuntu-upgrade-linux-image-4-13-0-46-lowlatency
  • ubuntu-upgrade-linux-image-4-15-0-1010-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1011-aws
  • ubuntu-upgrade-linux-image-4-15-0-1012-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1013-raspi2
  • ubuntu-upgrade-linux-image-4-15-0-1014-azure
  • ubuntu-upgrade-linux-image-4-15-0-1014-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1016-aws
  • ubuntu-upgrade-linux-image-4-15-0-1016-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1018-azure
  • ubuntu-upgrade-linux-image-4-15-0-24-generic
  • ubuntu-upgrade-linux-image-4-15-0-24-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-24-lowlatency
  • ubuntu-upgrade-linux-image-4-15-0-24-snapdragon
  • ubuntu-upgrade-linux-image-4-15-0-29-generic
  • ubuntu-upgrade-linux-image-4-15-0-29-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-29-lowlatency
  • ubuntu-upgrade-linux-image-4-15-0-29-snapdragon
  • ubuntu-upgrade-linux-image-4-4-0-1024-aws
  • ubuntu-upgrade-linux-image-4-4-0-1029-kvm
  • ubuntu-upgrade-linux-image-4-4-0-1062-aws
  • ubuntu-upgrade-linux-image-4-4-0-1092-raspi2
  • ubuntu-upgrade-linux-image-4-4-0-1095-snapdragon
  • ubuntu-upgrade-linux-image-4-4-0-130-generic
  • ubuntu-upgrade-linux-image-4-4-0-130-generic-lpae
  • ubuntu-upgrade-linux-image-4-4-0-130-lowlatency
  • ubuntu-upgrade-linux-image-4-4-0-130-powerpc-e500mc
  • ubuntu-upgrade-linux-image-4-4-0-130-powerpc-smp
  • ubuntu-upgrade-linux-image-4-4-0-130-powerpc64-emb
  • ubuntu-upgrade-linux-image-4-4-0-130-powerpc64-smp
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-azure
  • ubuntu-upgrade-linux-image-gcp
  • ubuntu-upgrade-linux-image-generic
  • ubuntu-upgrade-linux-image-generic-hwe-16-04
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-16-04
  • ubuntu-upgrade-linux-image-generic-lpae-lts-trusty
  • ubuntu-upgrade-linux-image-generic-lpae-lts-xenial
  • ubuntu-upgrade-linux-image-generic-lts-trusty
  • ubuntu-upgrade-linux-image-generic-lts-xenial
  • ubuntu-upgrade-linux-image-gke
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-hwe-16-04
  • ubuntu-upgrade-linux-image-lowlatency-lts-xenial
  • ubuntu-upgrade-linux-image-oem
  • ubuntu-upgrade-linux-image-powerpc-e500
  • ubuntu-upgrade-linux-image-powerpc-e500mc
  • ubuntu-upgrade-linux-image-powerpc-e500mc-lts-xenial
  • ubuntu-upgrade-linux-image-powerpc-smp
  • ubuntu-upgrade-linux-image-powerpc-smp-lts-xenial
  • ubuntu-upgrade-linux-image-powerpc64-emb
  • ubuntu-upgrade-linux-image-powerpc64-emb-lts-xenial
  • ubuntu-upgrade-linux-image-powerpc64-smp
  • ubuntu-upgrade-linux-image-powerpc64-smp-lts-xenial
  • ubuntu-upgrade-linux-image-raspi2
  • ubuntu-upgrade-linux-image-snapdragon

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