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Information Exposure Affecting kernel-bootwrapper package, versions <0:3.10.0-1062.el7

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.08% (34th percentile)

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  • Snyk ID SNYK-RHEL7-KERNELBOOTWRAPPER-4883786
  • published 26 Jul 2021
  • disclosed 8 Mar 2018
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Introduced: 8 Mar 2018

CVE-2018-7755 Open this link in a new tab
CWE-200 Open this link in a new tab

How to fix?

Upgrade RHEL:7 kernel-bootwrapper to version 0:3.10.0-1062.el7 or higher.
This issue was patched in RHSA-2019:2029.

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.

An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location of kernel code and data and bypass kernel security protections such as KASLR.