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CVE-2025-21989— drm/amd/display: fix missing .is_two_pixels_per_container

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于dce60_tg_funcs缺少is_two_pixels_per_container函数。

AI Predicted 5.5 Difficulty: Trivial EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux e6a901a00822659181c93c86d8bbc2a17779fddc< fefa811e616b5d0b555ed65743e528a0a8a0b377 affected
e6a901a00822659181c93c86d8bbc2a17779fddc< 36d04c9313d8d83ead92242f037099ac73e02120 affected
e6a901a00822659181c93c86d8bbc2a17779fddc< e204aab79e01bc8ff750645666993ed8b719de57 affected
6.11 affected
< 6.11 unaffected
6.12.20≤ 6.12.* unaffected
6.13.8≤ 6.13.* unaffected
6.14≤ * unaffected
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I. Basic Information for CVE-2025-21989

Vulnerability Information
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Vulnerability Title
drm/amd/display: fix missing .is_two_pixels_per_container
Source: CVE Program / CVE List V5
Vulnerability 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)
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于dce60_tg_funcs缺少is_two_pixels_per_container函数。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux e6a901a00822659181c93c86d8bbc2a17779fddc ~ fefa811e616b5d0b555ed65743e528a0a8a0b377 -
Linux Linux 6.11 -

II. Public POCs for CVE-2025-21989

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III. Intelligence Information for CVE-2025-21989

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Same Patch Batch · Linux · 2025-04-02 · 8 CVEs total

CVE-2025-21988 9.8 CRITICAL fs/netfs/read_collect: add to next->prev_donated
CVE-2025-21994 7.6 HIGH ksmbd: fix incorrect validation for num_aces field of smb_acl
CVE-2025-21993 iscsi_ibft: Fix UBSAN shift-out-of-bounds warning in ibft_attr_show_nic()
CVE-2025-21992 HID: ignore non-functional sensor in HP 5MP Camera
CVE-2025-21991 x86/microcode/AMD: Fix out-of-bounds on systems with CPU-less NUMA nodes
CVE-2025-21990 drm/amdgpu: NULL-check BO's backing store when determining GFX12 PTE flags
CVE-2025-21987 drm/amdgpu: init return value in amdgpu_ttm_clear_buffer

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-21989

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