Out-of-bounds Read Affecting kernel-bootwrapper package, versions <0:3.10.0-514.21.1.el7


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.06% (28th percentile)

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  • Snyk ID SNYK-RHEL7-KERNELBOOTWRAPPER-5195575
  • published 26 Jul 2021
  • disclosed 15 Nov 2016

How to fix?

Upgrade RHEL:7 kernel-bootwrapper to version 0:3.10.0-514.21.1.el7 or higher.
This issue was patched in RHSA-2017:1308.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-bootwrapper package and not the kernel-bootwrapper package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.9.8 does not properly validate meta block groups, which allows physically proximate attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image.