| Description: | Summary:
The remote host is missing an update for the 'linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oem' package(s) announced via the USN-3718-1 advisory.
Vulnerability Insight:
USN-3695-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04
LTS. Unfortunately, the fix for CVE-2018-1108 introduced a regression
where insufficient early entropy prevented services from starting,
leading in some situations to a failure to boot, This update addresses
the issue.
We apologize for the inconvenience.
Original advisory details:
Jann Horn discovered that the Linux kernel's implementation of random
seed data reported that it was in a ready state before it had gathered
sufficient entropy. An attacker could use this to expose sensitive
information. (CVE-2018-1108)
Wen Xu discovered that the ext4 file system implementation in the Linux
kernel did not properly initialize the crc32c checksum driver. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2018-1094)
It was discovered that the cdrom driver in the Linux kernel contained an
incorrect bounds check. A local attacker could use this to expose sensitive
information (kernel memory). (CVE-2018-10940)
Wen Xu discovered that the ext4 file system implementation in the Linux
kernel did not properly validate xattr sizes. A local attacker could use
this to cause a denial of service (system crash). (CVE-2018-1095)
Jann Horn discovered that the 32 bit adjtimex() syscall implementation for
64 bit Linux kernels did not properly initialize memory returned to user
space in some situations. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2018-11508)
It was discovered that an information leak vulnerability existed in the
floppy driver in the Linux kernel. A local attacker could use this to
expose sensitive information (kernel memory). (CVE-2018-7755)
Affected Software/OS:
'linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oem' package(s) on Ubuntu 18.04.
Solution:
Please install the updated package(s).
CVSS Score:
7.1
CVSS Vector:
AV:N/AC:M/Au:N/C:N/I:N/A:C
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