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Out-of-Bounds The advisory has been revoked - it doesn't affect any version of package kernel-rt-debug-kvm  (opens in a new tab)

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
0.87% (56th percentile)

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  • Snyk IDSNYK-RHEL7-KERNELRTDEBUGKVM-1766909
  • published23 Oct 2021
  • disclosed13 Oct 2021
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Introduced: 13 Oct 2021

CVE-2021-42327  (opens in a new tab)
CWE-119  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:7.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-kvm package and not the kernel-rt-debug-kvm package as distributed by RHEL.

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.

References