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CVE Record

CVE-2023-53378: drm/i915/dpt: Treat the DPT BO as a framebuffer

In the Linux kernel, the following vulnerability has been resolved: drm/i915/dpt: Treat the DPT BO as a framebuffer Currently i915_gem_object_is_framebuffer() doesn't treat the BO containing the framebuffer's DPT as a framebuffer itself. This means eg. that the shrinker can evict the DPT BO while leaving the actual FB BO bound, when the DPT is allocated from regular shmem. That causes an immediate oops during hibernate as we try to rewrite the PTEs inside the already evicted DPT obj. TODO: presumably this might also be the reason for the DPT related display faults under heavy memory pressure, but I'm still not sure how that would happen as the object should be pinned by intel_dpt_pin() while in active use by the display engine... (cherry picked from commit 779cb5ba64ec7df80675a956c9022929514f517a)

MediumCVSS 5.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel reliability flaw in the Intel i915 graphics driver. Under certain memory-management conditions, especially hibernation, the kernel can crash. The impact is denial of service, not data theft or remote compromise based on the provided sources.

Executive priority

Treat as a routine but real stability update. Prioritize fleets where unexpected crashes during hibernation would disrupt users or operations. It does not indicate known active exploitation or confidentiality risk from the provided evidence.

Technical view

The i915 driver did not treat the DPT buffer object as part of the framebuffer. The memory shrinker could evict that DPT object while the framebuffer stayed bound, causing a kernel oops when hibernation rewrote PTEs. CVSS is 5.5: local access, low complexity, low privileges, availability impact only.

Likely exposure

Exposure is most relevant to Linux systems using Intel i915 graphics on affected kernel versions listed by the CVE record, including 6.0, 6.1.23, 6.2.10, and 6.3. Distribution backports may change practical exposure.

Exploitation context

The provided sources do not show active exploitation, and CISA KEV status is false. The described failure is local and availability-focused, with hibernation identified as a trigger. No remote attack path is described in the sources.

Researcher notes

Evidence is limited to the CVE record and kernel stable commits. The vulnerability is a kernel oops from framebuffer/DPT buffer lifetime handling in drm/i915. The source notes possible display faults under heavy memory pressure but does not confirm that path.

Mitigation direction

  • Update to a vendor kernel containing the referenced upstream stable fixes.
  • Check Linux distribution advisories and package changelogs for CVE-2023-53378.
  • Prioritize affected laptops or workstations using Intel i915 graphics and hibernation.
  • If unpatched, avoid hibernation on affected systems where operationally feasible.

Validation and detection

  • Inventory Linux kernel versions and Intel i915 graphics usage.
  • Compare installed kernels with vendor advisories for CVE-2023-53378.
  • Review kernel package changelogs for the referenced stable commits.
  • Confirm no unexplained kernel oops events occur during controlled hibernation testing.
Prepared
Confidence
high
Sources
5

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.

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CVE-2023-53378 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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
1ADP providers
4Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

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
5.5CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

5.5Medium
CVSS 3.1 vector shape for CVE-2023-53378Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux0dc987b699ce4266450d407d6d79d41eab88c5d0, 0dc987b699ce4266450d407d6d79d41eab88c5d0, 0dc987b699ce4266450d407d6d79d41eab88c5d0unaffected
LinuxLinux6.0, 0, 6.1.23, 6.2.10, 6.3affected
Weakness

CWE details

No CWE listed

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