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Oracle Linux: CVE-2017-7495: ELSA-2019-4823: Unbreakable Enterprise kernel security update (IMPORTANT)

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Oracle Linux: CVE-2017-7495: ELSA-2019-4823: Unbreakable Enterprise kernel security update (IMPORTANT)

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:C/I:N/A:N)
Published
05/12/2017
Created
10/19/2019
Added
10/17/2019
Modified
07/22/2024

Description

fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, which allows local users to obtain sensitive information from other users' files in opportunistic circumstances by waiting for a hardware reset, creating a new file, making write system calls, and reading this file. A vulnerability was found in the Linux kernel where filesystems mounted with data=ordered mode may allow an attacker to read stale data from recently allocated blocks in new files after a system 'reset' by abusing ext4 mechanics of delayed allocation.

Solution(s)

  • oracle-linux-upgrade-kernel-uek

References

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