CVE-2025-21989 Details
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix missing .is_two_pixels_per_container Starting from 6.11, AMDGPU driver, while being loaded with amdgpu.dc=1, due to lack of .is_two_pixels_per_container function in dce60_tg_funcs, causes a NULL pointer dereference on PCs with old GPUs, such as R9 280X. So this fix adds missing .is_two_pixels_per_container to dce60_tg_funcs. (cherry picked from commit bd4b125eb949785c6f8a53b0494e32795421209d)
A vulnerability in the Linux kernel's AMDGPU driver can lead to a NULL pointer dereference on PCs with older GPUs, such as the R9 280X. This issue arises when the driver is loaded with the 'amdgpu.dc=1' option, starting from version 6.11. The problem occurs because the 'is_two_pixels_per_container' function is missing from the 'dce60_tg_funcs' structure, causing the NULL pointer dereference. The vulnerability has been addressed by adding the missing function to the appropriate structure.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Oct 1, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/36d04c9313d8d83ead92242f037099ac73e02120 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e204aab79e01bc8ff750645666993ed8b719de57 | kernel.org | Patch |
| https://git.kernel.org/stable/c/fefa811e616b5d0b555ed65743e528a0a8a0b377 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
| CWE-476 | NULL Pointer Dereference | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.11, < 6.12.20 >= 6.13, < 6.13.8 6.14 rc1 6.14 rc2 6.14 rc3 6.14 rc4 6.14 rc5 6.14 rc6 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Oct 1, 2025 | CVE Modified | CISA-ADP |
| Apr 10, 2025 | Initial Analysis | [email protected] |
| Apr 2, 2025 | New CVE Received | kernel.org |