CVE-2026-53285 (GCVE-0-2026-53285)
Vulnerability from cvelistv5 – Published: 2026-06-26 19:40 – Updated: 2026-06-26 19:40
VLAI
EPSS
VEX
Title
drm/amd/display: Wrap DCN32 phantom-plane allocation in DC_RUN_WITH_PREEMPTION_ENABLED
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Wrap DCN32 phantom-plane allocation in DC_RUN_WITH_PREEMPTION_ENABLED
[Why]
dcn32_validate_bandwidth() wraps dcn32_internal_validate_bw() with
DC_FP_START()/DC_FP_END(). In x86 non-RT, DC_FP_START takes fpregs_lock(),
which disables local softirqs.
The DML1 path through dcn32_enable_phantom_plane() calls kvzalloc() to
allocate ~335 KiB for dc_plane_state. This triggers the vmalloc path,
which calls BUG_ON(in_interrupt()) because it's invoked within the
FPU-enabled (softirq disabled) region, leading to a kernel crash.
[How]
Wrap the dc_state_create_phantom_plane() call with the
DC_RUN_WITH_PREEMPTION_ENABLED() macro to allow preemption during
this memory allocation.
(cherry picked from commit 885ccbef7b94a8b38f69c4211c679021aa27ad11)
Severity
5.5 (Medium)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
235c67634230b0f9ad8c0185272fed36c892b1c4 , < 30bb2ec6695d62f63db4aa6179c4626834ed0cd6
(git)
Affected: 235c67634230b0f9ad8c0185272fed36c892b1c4 , < 183182235f6d53bac62c6c39014738a54a68dfa6 (git) |
guessed | |
| Linux | Linux |
Affected:
6.0
Unaffected: 0 , < 6.0 (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
guessed |
{
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"programFiles": [
"drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c"
],
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}
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"url": "https://git.kernel.org/stable/c/30bb2ec6695d62f63db4aa6179c4626834ed0cd6"
},
{
"url": "https://git.kernel.org/stable/c/183182235f6d53bac62c6c39014738a54a68dfa6"
}
],
"title": "drm/amd/display: Wrap DCN32 phantom-plane allocation in DC_RUN_WITH_PREEMPTION_ENABLED",
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"cveId": "CVE-2026-53285",
"datePublished": "2026-06-26T19:40:46.328Z",
"dateReserved": "2026-06-09T07:44:35.396Z",
"dateUpdated": "2026-06-26T19:40:46.328Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
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"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-53285",
"date": "2026-09-16",
"epss": "0.00107",
"percentile": "0.01317"
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"redhat_vex": {
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"current_release_date": "2026-07-31T20:54:32+00:00",
"cve": "CVE-2026-53285",
"id": "CVE-2026-53285",
"initial_release_date": "2026-06-26T00:00:00+00:00",
"product_status:known_affected": "246",
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"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: drm/amd/display: Wrap DCN32 phantom-plane allocation in DC_RUN_WITH_PREEMPTION_ENABLED",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53285.json",
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"title": "SUSE CVE CVE-2026-53285",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-53285.json",
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}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
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