LiveActive security incident?Get immediate response
CVE Record

CVE-2026-64039: drm/msm/snapshot: fix dumping of the unaligned regions

In the Linux kernel, the following vulnerability has been resolved: drm/msm/snapshot: fix dumping of the unaligned regions The snapshotting code internally aligns data segment to 16 bytes. This works fine for DPU code (where most of the regions are aligned), but fails for snapshotting of the DSI data (because DSI data region is shifted by 4 bytes). Fix the code by removing length alignment and by accurately printing last registers in the region. While reworking the code also fix the 16x memory overallocation in msm_disp_state_dump_regs(). Patchwork: https://patchwork.freedesktop.org/patch/725449/

HighCVSS 7.7Not KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This is a high-severity Linux kernel issue in the msm DRM snapshot code. Unaligned display snapshot regions can be handled incorrectly during register dumping. The published impact is local, with high confidentiality and availability impact. The source bundle does not show active exploitation.

Executive priority

Treat as a high-priority kernel maintenance issue for affected Linux fleets, especially devices using the msm DRM driver. It is not currently evidenced as exploited, but the potential confidentiality and availability impact justifies timely patch validation.

Technical view

The fix removes length alignment in drm/msm snapshot register dumping and prints final registers accurately. The bug affects unaligned DSI data regions shifted by 4 bytes and also involved a 16x memory overallocation in msm_disp_state_dump_regs(). CVSS 3.1 is 7.7 with no integrity impact stated.

Likely exposure

Exposure appears limited to Linux systems running affected kernel versions with the msm DRM display driver path present or reachable. The bundle lists affected Linux versions from 5.14 through 7.1 ranges, with stable kernel commits referenced as fixes.

Exploitation context

The CVSS vector is local access, low complexity, no privileges, and no user interaction. KEV is false, and the supplied sources provide no evidence of active exploitation, public exploit code, or remote attack exposure.

Researcher notes

The available record is kernel-fix focused and does not provide a CWE, proof of concept, or detailed trigger conditions beyond unaligned msm snapshot register regions. Avoid assuming affected devices beyond Linux kernels carrying the vulnerable drm/msm code path.

Mitigation direction

  • Identify systems running affected Linux kernel versions.
  • Prioritize kernels using msm DRM display functionality.
  • Apply vendor or distribution kernel updates containing the referenced stable commits.
  • If updates are unavailable, check Linux or distribution guidance for supported mitigations.

Validation and detection

  • Inventory kernel versions across Linux assets.
  • Confirm whether msm DRM modules or builds are present.
  • Map installed kernels against vendor advisories and referenced stable commits.
  • Verify patched systems include the relevant drm/msm snapshot fix.
Prepared
Confidence
medium
Sources
9

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2026-64039 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
7.7 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
3Timeline events
0ADP providers
8Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.7CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H2.55.2Linux

Vulnerability scoring details

Base CVSS 3.1 score

7.7High
CVSS 3.1 vector shape for CVE-2026-64039Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux98659487b845c05b6bed85d881713545db674c7c, 98659487b845c05b6bed85d881713545db674c7c, 98659487b845c05b6bed85d881713545db674c7c, 98659487b845c05b6bed85d881713545db674c7c, 98659487b845c05b6bed85d881713545db674c7c, 98659487b845c05b6bed85d881713545db674c7c, 98659487b845c05b6bed85d881713545db674c7cunaffected
LinuxLinux5.14, 0, 5.15.209, 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11, 7.1affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.