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CVE Record

CVE-2023-54263: drm/nouveau/kms/nv50-: init hpd_irq_lock for PIOR DP

In the Linux kernel, the following vulnerability has been resolved: drm/nouveau/kms/nv50-: init hpd_irq_lock for PIOR DP Fixes OOPS on boards with ANX9805 DP encoders.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel nouveau graphics-driver issue. On systems with ANX9805 DisplayPort encoders, a missing lock initialization can trigger a kernel OOPS, causing instability or a crash. The source bundle does not provide CVSS scoring, broad impact details, or evidence of active exploitation.

Executive priority

Treat this as targeted operational stability risk, not a broadly evidenced emergency. Prioritize remediation where Linux desktops, workstations, or embedded systems use nouveau with affected DisplayPort hardware.

Technical view

The fix initializes hpd_irq_lock for PIOR DisplayPort paths in drm/nouveau/kms/nv50-. The kernel note says this resolves OOPS conditions on boards with ANX9805 DP encoders. Affected Linux versions are listed in the bundle, but distribution-specific package mapping is not provided.

Likely exposure

Exposure appears limited to Linux systems using the nouveau driver on relevant NVIDIA display hardware with ANX9805 DisplayPort encoders. General server fleets without this graphics path are less likely exposed, but kernel package mapping must be checked per distribution.

Exploitation context

The bundle marks KEV as false and provides no cited evidence of active exploitation. The described behavior is a kernel OOPS on specific display hardware, not a documented remote attack path.

Researcher notes

Evidence is sparse: no CVSS, CWE, exploit narrative, or distro package matrix is included. The strongest technical signal is the upstream stable commit message tying the issue to hpd_irq_lock initialization and ANX9805 DP encoder OOPS behavior.

Mitigation direction

  • Check Linux distribution advisories for kernels containing the referenced stable fixes.
  • Update affected systems to a vendor-supported kernel that includes the nouveau fix.
  • Prioritize systems using nouveau with DisplayPort hardware matching the described ANX9805 path.
  • If no vendor package is available, monitor vendor guidance rather than applying ad hoc fixes.

Validation and detection

  • Inventory Linux kernel versions and systems using the nouveau driver.
  • Identify hosts with NVIDIA display hardware and ANX9805 DisplayPort encoder exposure.
  • Compare installed kernel packages against distribution advisories for CVE-2023-54263.
  • Review kernel logs for nouveau-related OOPS events on affected hardware.
Prepared
Confidence
medium
Sources
4

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

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CVE-2023-54263 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

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

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
LinuxLinuxa0922278f83eae085fdf73d06f71bbdfb9d6789e, a0922278f83eae085fdf73d06f71bbdfb9d6789eunaffected
LinuxLinux5.10, 0, 6.4.7, 6.5affected
Weakness

CWE details

No CWE listed

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