CVE-2021-47489

drm/amdgpu: Fix even more out of bound writes from debugfs

HIGH
7.8
CVSS Score
Published: May 22, 2024 at 08:19 AM UTC
Updated: June 17, 2026 at 04:17 AM UTC
2 products affected across 2 vendorsLinux KernelDebian Linux

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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 <[email protected]> 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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.10 ≤ v < 5.10.2365.10 ≤ v < 5.155.11 ≤ v < 5.14.165.15 rc15.15 rc25.15 rc35.15 rc45.15 rc55.15 rc65.15 rc7918698d5c2b50433714d2042f55b55b090faa167
Vendor states this is fixed in 1336b886b162fdc84708096ea152a61c0e1fc09c (fixed)
Vendor states this is fixed in 3f4e54bd312d3dafb59daf2b97ffa08abebe60f5 (fixed)
Vendor states this is fixed in 9eb4bdd554fc31a5ef6bf645a20ff21618ce45a9 (fixed)
Vendor states this is fixed in 5.10 (unaffected)
Vendor states this is fixed in 5.10.236 (unaffected)
Vendor states this is fixed in 5.14.16 (unaffected)
Vendor states this is fixed in 5.15 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/1336b886b162fdc84708096ea152a61c0e1fc09c
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/3f4e54bd312d3dafb59daf2b97ffa08abebe60f5
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9eb4bdd554fc31a5ef6bf645a20ff21618ce45a9
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-787

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