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MEDIUM

kernel: Kernel address information leak in drivers/block/floppy.c:show_floppy function potentially allowing KASLR bypass

Published Feb 21, 2018

Description

In the Linux kernel through 4.15.4, the floppy driver reveals the addresses of kernel functions and global variables using printk calls within the function show_floppy in drivers/block/floppy.c. An attacker can read this information from dmesg and use the addresses to find the locations of kernel code and data and bypass kernel security protections such as KASLR.

Affected products

Remediation

Red Hat statement

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, and Red Hat Enterprise MRG 2, as KASLR feature is not present or enabled in these products. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7, its real-time kernel, Red Hat Enterprise Linux 7 for ARM 64 and Red Hat Enterprise Linux 7 for Power 9 LE. This has been rated as having Low security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

Metrics

Weaknesses (1)

CWE-200

Exposure of Sensitive Information

References (7)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Feb 21, 2018
Updated Aug 5, 2024
Reserved Feb 20, 2018
Link CVE-2018-7273
CISA Vulnrichment
Updated n/a
NVD
Status Modified
Modified Jun 17, 2026
Link CVE-2018-7273
Red Hat
Severity Low
Public date Feb 20, 2018
Links CVE-2018-7273 - Bugzilla