Rapid7 Vulnerability & Exploit Database

Ubuntu: (Multiple Advisories) (CVE-2018-1095): Linux kernel (HWE) regression

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Ubuntu: (Multiple Advisories) (CVE-2018-1095): Linux kernel (HWE) regression

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
04/01/2018
Created
07/25/2018
Added
07/04/2018
Modified
08/25/2021

Description

The ext4_xattr_check_entries function in fs/ext4/xattr.c in the Linux kernel through 4.15.15 does not properly validate xattr sizes, which causes misinterpretation of a size as an error code, and consequently allows attackers to cause a denial of service (get_acl NULL pointer dereference and system crash) via a crafted ext4 image.

Solution(s)

  • 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-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-gke
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-hwe-16-04
  • ubuntu-upgrade-linux-image-oem
  • ubuntu-upgrade-linux-image-raspi2
  • ubuntu-upgrade-linux-image-snapdragon

References

  • USN-3695-1
  • USN-3695-2
  • USN-3718-1
  • USN-3718-2
  • CVE-2018-1095

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