What’s Vulnerable › Vulnerabilities

CVE-2021-47489: drm/amdgpu: Fix even more out of bound writes from debugfs

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-22 · updated 2026-06-17
• Weakness: CWE-787

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix even more out of bound writes from debugfs CVE-2021-42327 was fixed by: commit f23750b5b3d98653b31d4469592935ef6364ad67 Author: Thelford Williams <tdwilliamsiv@gmail.com> Date: Wed Oct 13 16:04:13 2021 -0400 drm/amdgpu: fix out of bounds write but amdgpu_dm_debugfs.c contains more of the same issue so fix the remaining ones. v2: * Add missing fix in dp_max_bpc_write (Harry Wentland)

Affected products

• Debian Linux: 11.0
• Linux kernel: from 5.10 before 5.10.236; from 5.11 before 5.14.16; 5.15-rc1, 5.15-rc2, 5.15-rc3, 5.15-rc4, 5.15-rc5, 5.15-rc6 (+1) — fixed in 5.10.236, 5.14.16

How to fix

Upgrade to a fixed version: Linux kernel 5.10.236, 5.14.16. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1336b886b162fdc84708096ea152a61c0e1fc09c
• https://git.kernel.org/stable/c/3f4e54bd312d3dafb59daf2b97ffa08abebe60f5
• https://git.kernel.org/stable/c/9eb4bdd554fc31a5ef6bf645a20ff21618ce45a9
• https://git.kernel.org/stable/c/3f4e54bd312d3dafb59daf2b97ffa08abebe60f5
• https://git.kernel.org/stable/c/9eb4bdd554fc31a5ef6bf645a20ff21618ce45a9
• https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html

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