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CentOS Linux: CVE-2018-1095: Important: kernel-alt security, bug fix, and enhancement update (CESA-2018:2948)

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CentOS Linux: CVE-2018-1095: Important: kernel-alt security, bug fix, and enhancement update (CESA-2018:2948)

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
04/02/2018
Created
08/29/2019
Added
08/28/2019
Modified
05/25/2023

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)

  • centos-upgrade-kernel

References

  • CVE-2018-1095
  • RHSA-2018:2948

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