CVE-2026-53135 (GCVE-0-2026-53135)
Vulnerability from cvelistv5 – Published: 2026-06-25 08:38 – Updated: 2026-06-25 08:38
VLAI
EPSS
VEX
Title
drm/amd/display: Fix NULL deref and buffer over-read in SDP debugfs
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Fix NULL deref and buffer over-read in SDP debugfs
[Why & How]
dp_sdp_message_debugfs_write() dereferences connector->base.state->crtc
without checking for NULL. A connector can be connected but not bound to
any CRTC (e.g. after hot-plug before the next atomic commit), causing a
kernel crash when writing to the sdp_message debugfs node.
The function also ignores the user-provided size argument and always
passes 36 bytes to copy_from_user(), reading past the user buffer when
size < 36.
Fix both issues by:
- Returning -ENODEV when connector->base.state or state->crtc is NULL
- Clamping write_size to min(size, sizeof(data))
(cherry picked from commit 6ab4c36a522842ff70474a1c0af2e40e50fc8300)
Severity
5.5 (Medium)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
c7ba3653e9773256b2b08508a2ed2ca28ea7566b , < ee9cfcf77a8e8af637396dc00966df5f701e661c
(git)
Affected: c7ba3653e9773256b2b08508a2ed2ca28ea7566b , < b781f90a9528555c709e59789550893581ef0be4 (git) Affected: c7ba3653e9773256b2b08508a2ed2ca28ea7566b , < a2de1d71891a038a9346b2c1a72b88c8350f2479 (git) Affected: c7ba3653e9773256b2b08508a2ed2ca28ea7566b , < 7fc4fab4acc307ad2903312c195872b2953d32c3 (git) Affected: c7ba3653e9773256b2b08508a2ed2ca28ea7566b , < 7ae95c0275c330b5dbae806f8e431720edad776f (git) Affected: c7ba3653e9773256b2b08508a2ed2ca28ea7566b , < bb6f705b73b5f191f14ad004e2c8c4b615806187 (git) Affected: c7ba3653e9773256b2b08508a2ed2ca28ea7566b , < c90954cdea4d6998ec345de0d840d030c145b89e (git) Affected: c7ba3653e9773256b2b08508a2ed2ca28ea7566b , < adf67034b1f61f7119295208085bfd43f85f56af (git) |
guessed | |
| Linux | Linux |
Affected:
5.2
Unaffected: 0 , < 5.2 (semver) Unaffected: 5.10.259 , ≤ 5.10.* (semver) Unaffected: 5.15.210 , ≤ 5.15.* (semver) Unaffected: 6.1.176 , ≤ 6.1.* (semver) Unaffected: 6.6.143 , ≤ 6.6.* (semver) Unaffected: 6.12.94 , ≤ 6.12.* (semver) Unaffected: 6.18.36 , ≤ 6.18.* (semver) Unaffected: 7.0.13 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
guessed |
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"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-07-31T20:59:39+00:00",
"cve": "CVE-2026-53135",
"id": "CVE-2026-53135",
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"product_status:known_affected": "198",
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"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: drm/amd/display: Fix NULL deref and buffer over-read in SDP debugfs",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53135.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-31T16:44:55Z",
"cve": "CVE-2026-53135",
"id": "CVE-2026-53135",
"initial_release_date": "2026-06-26T02:12:29Z",
"product_status:first_fixed": "2",
"product_status:known_affected": "578",
"product_status:known_not_affected": "140",
"product_status:recommended": "250",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-53135",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-53135.json",
"version": "10"
}
}
}
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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
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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