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 Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <=5.14.14 | |
| Red Hat Fedora | =35 | |
| All of | ||
| NetApp H300S Firmware | ||
| NetApp H300S Firmware | ||
| All of | ||
| NetApp H500e Firmware | ||
| NetApp H500e Firmware | ||
| All of | ||
| NetApp H700S | ||
| NetApp H700S | ||
| All of | ||
| NetApp H300E | ||
| NetApp H300E Firmware | ||
| All of | ||
| NetApp H500S Firmware | ||
| NetApp H500e Firmware | ||
| All of | ||
| NetApp H700E | ||
| NetApp H700E | ||
| All of | ||
| NetApp H410S | ||
| NetApp H410S Firmware | ||
| All of | ||
| NetApp H410C | ||
| NetApp H410C Firmware | ||
| NetApp H300S Firmware | ||
| NetApp H300S Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H700S | ||
| NetApp H700S | ||
| NetApp H300E | ||
| NetApp H300E Firmware | ||
| NetApp H500S Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H700E | ||
| NetApp H700E | ||
| NetApp H410S | ||
| NetApp H410S Firmware | ||
| NetApp H410C | ||
| NetApp H410C Firmware | ||
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.135-1 6.12.22-1 6.12.25-1 |
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Reference Links
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
- https://www.mail-archive.com/amd-gfx@lists.freedesktop.org/msg69080.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RDDEW4APTYKJK365HC2JZIVXYUV7ZRN7/
- https://security.netapp.com/advisory/ntap-20211118-0005/
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f23750b5b3d98653b31d4469592935ef6364ad67
- https://launchpad.net/bugs/cve/CVE-2021-42327
- https://www.mail-archive.com/amd-gfx%40lists.freedesktop.org/msg69080.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RDDEW4APTYKJK365HC2JZIVXYUV7ZRN7/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42327
- https://nvd.nist.gov/vuln/detail/CVE-2021-42327
- https://security-tracker.debian.org/tracker/CVE-2021-42327
- https://ubuntu.com/security/CVE-2021-42327
- https://lists.freedesktop.org/archives/amd-gfx/2021-October/070170.html
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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- agent/softwarecombine
- agent/tags
- collector/security-tracker-debian
- source/Debian
- vendor/linux
- canonical/linux kernel
- version/linux kernel/5.14.14
- vendor/fedoraproject
- canonical/red hat fedora
- version/red hat fedora/35
- vendor/netapp
- canonical/netapp h300s firmware
- canonical/netapp h500e firmware
- canonical/netapp h700s
- canonical/netapp h300e
- canonical/netapp h300e firmware
- canonical/netapp h500s firmware
- canonical/netapp h700e
- canonical/netapp h410s
- canonical/netapp h410s firmware
- canonical/netapp h410c
- canonical/netapp h410c firmware
- package-manager/debian