CVE-2026-64231 (GCVE-0-2026-64231)
Vulnerability from cvelistv5 – Published: 2026-07-24 15:23 – Updated: 2026-07-24 15:23
VLAI
EPSS
VEX
Title
drm/msm/dsi: don't dump registers past the mapped region
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/msm/dsi: don't dump registers past the mapped region
On DSI 6G platforms the IO address space is internally adjusted by
io_offset. Later this adjusted address might be used for memory dumping.
However the size that is used for memory dumping isn't adjusted to
account for the io_offset, leading to the potential access to the
unmapped region. Lower ctrl_size by the io_offset value to prevent
access past the mapped area.
msm_disp_snapshot_add_block+0x1d4/0x3c8 [msm] (P)
msm_dsi_host_snapshot+0x4c/0x78 [msm]
msm_dsi_snapshot+0x28/0x50 [msm]
msm_disp_snapshot_capture_state+0x74/0x140 [msm]
msm_disp_snapshot_state_sync+0x60/0x90 [msm]
_msm_disp_snapshot_work+0x30/0x90 [msm]
kthread_worker_fn+0xdc/0x460
kthread+0x120/0x140
Patchwork: https://patchwork.freedesktop.org/patch/721747/
Severity
5.5 (Medium)
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 , < 5e2c196c3430fb94225c4102b1028d0146544761
(git)
Affected: bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 , < 567b5e976e2e15280d78c9ef2add1954a0bbb5b1 (git) Affected: bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 , < 9f8274749d9010a1a72f97e547b7eb9ebb82345b (git) Affected: bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 , < a184aec790135938b0fadb415e55accd1f8685a0 (git) Affected: bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 , < ab871d5882953e5574ae2bc47bec88c2e3d22663 (git) Affected: bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 , < 5b49a46baa853b26dbefa65c6c75dd9ff69f63d4 (git) |
guessed | |
| Linux | Linux |
Affected:
5.14
Unaffected: 0 , < 5.14 (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.142 , ≤ 6.6.* (semver) Unaffected: 6.12.92 , ≤ 6.12.* (semver) Unaffected: 6.18.34 , ≤ 6.18.* (semver) Unaffected: 7.0.11 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
guessed |
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},
{
"url": "https://git.kernel.org/stable/c/5b49a46baa853b26dbefa65c6c75dd9ff69f63d4"
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"title": "drm/msm/dsi: don\u0027t dump registers past the mapped region",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm/dsi: don\u0027t dump registers past the mapped region\n\nOn DSI 6G platforms the IO address space is internally adjusted by\nio_offset. Later this adjusted address might be used for memory dumping.\nHowever the size that is used for memory dumping isn\u0027t adjusted to\naccount for the io_offset, leading to the potential access to the\nunmapped region. Lower ctrl_size by the io_offset value to prevent\naccess past the mapped area.\n\n msm_disp_snapshot_add_block+0x1d4/0x3c8 [msm] (P)\n msm_dsi_host_snapshot+0x4c/0x78 [msm]\n msm_dsi_snapshot+0x28/0x50 [msm]\n msm_disp_snapshot_capture_state+0x74/0x140 [msm]\n msm_disp_snapshot_state_sync+0x60/0x90 [msm]\n _msm_disp_snapshot_work+0x30/0x90 [msm]\n kthread_worker_fn+0xdc/0x460\n kthread+0x120/0x140\n\nPatchwork: https://patchwork.freedesktop.org/patch/721747/"
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/msm/dsi: no volcar registros m\u00e1s all\u00e1 de la regi\u00f3n mapeada\n\nEn plataformas DSI 6G, el espacio de direcciones de E/S se ajusta internamente mediante io_offset. M\u00e1s tarde, esta direcci\u00f3n ajustada podr\u00eda ser utilizada para el volcado de memoria. Sin embargo, el tama\u00f1o que se utiliza para el volcado de memoria no se ajusta para tener en cuenta el io_offset, lo que lleva al acceso potencial a la regi\u00f3n no mapeada. Reducir ctrl_size por el valor de io_offset para evitar el acceso m\u00e1s all\u00e1 del \u00e1rea mapeada.\n\n msm_disp_snapshot_add_block+0x1d4/0x3c8 [msm] (P)\n msm_dsi_host_snapshot+0x4c/0x78 [msm]\n msm_dsi_snapshot+0x28/0x50 [msm]\n msm_disp_snapshot_capture_state+0x74/0x140 [msm]\n msm_disp_snapshot_state_sync+0x60/0x90 [msm]\n _msm_disp_snapshot_work+0x30/0x90 [msm]\n kthread_worker_fn+0xdc/0x460\n kthread+0x120/0x140\n\nPatchwork: https://patchwork.freedesktop.org/patch/721747/"
}
],
"id": "CVE-2026-64231",
"lastModified": "2026-11-08T20:10:00.187",
"metrics": {
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{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2026-07-24T16:16:52.250",
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"tags": [
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"vulnStatus": "Analyzed",
"weaknesses": [
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{
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"value": "NVD-CWE-noinfo"
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"type": "Primary"
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"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-11-07T11:21:29+00:00",
"cve": "CVE-2026-64231",
"id": "CVE-2026-64231",
"initial_release_date": "2026-07-24T00:00:00+00:00",
"product_status:known_affected": "5",
"product_status:known_not_affected": "200",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: drm/msm/dsi: don\u0027t dump registers past the mapped region",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64231.json",
"version": "3"
}
}
}
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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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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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.