medium
6.7
CWE
119 787
Advisory Published
Updated

CVE-2021-42327: Buffer Overflow

First published: Thu Oct 21 2021(Updated: )

dp_link_settings_write in drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c in the Linux kernel through 5.14.14 allows a heap-based buffer overflow by an attacker who can write a string to the AMD GPU display drivers debug filesystem. There are no checks on size within parse_write_buffer_into_params when it uses the size of copy_from_user to copy a userspace buffer into a 40-byte heap buffer.

Credit: cve@mitre.org cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.15-1
Linux Kernel<=5.14.14
Fedora=35
All of
netapp h300s firmware
netapp h300s
All of
NetApp H500S Firmware
netapp h500s
All of
netapp h700s firmware
netapp h700s
All of
netapp h300e firmware
netapp h300e
All of
netapp h500e firmware
netapp h500e
All of
netapp h700e firmware
netapp h700e
All of
netapp h410s firmware
netapp h410s
All of
netapp h410c firmware
netapp h410c
netapp h300s firmware
netapp h300s
NetApp H500S Firmware
netapp h500s
netapp h700s firmware
netapp h700s
netapp h300e firmware
netapp h300e
netapp h500e firmware
netapp h500e
netapp h700e firmware
netapp h700e
netapp h410s firmware
netapp h410s
netapp h410c firmware
netapp h410c

Remedy

https://www.mail-archive.com/amd-gfx@lists.freedesktop.org/msg69080.html

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-42327?

    CVE-2021-42327 is considered a high severity vulnerability due to its potential for heap-based buffer overflow allowing remote code execution.

  • How do I fix CVE-2021-42327?

    To fix CVE-2021-42327, upgrade to Linux kernel versions 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.119-1, or 6.12.11-1 and later.

  • Which versions of Linux are affected by CVE-2021-42327?

    CVE-2021-42327 affects Linux kernel versions up to and including 5.14.14.

  • What types of systems are vulnerable to CVE-2021-42327?

    CVE-2021-42327 primarily affects systems running the Linux kernel, specifically those utilizing AMD GPU display drivers.

  • Can CVE-2021-42327 be exploited remotely?

    Yes, CVE-2021-42327 can be exploited remotely by an attacker who can write to the AMD GPU display drivers debug filesystem.

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