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CVE Record

CVE-2025-37854: drm/amdkfd: Fix mode1 reset crash issue

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix mode1 reset crash issue If HW scheduler hangs and mode1 reset is used to recover GPU, KFD signal user space to abort the processes. After process abort exit, user queues still use the GPU to access system memory before h/w is reset while KFD cleanup worker free system memory and free VRAM. There is use-after-free race bug that KFD allocate and reuse the freed system memory, and user queue write to the same system memory to corrupt the data structure and cause driver crash. To fix this race, KFD cleanup worker terminate user queues, then flush reset_domain wq to wait for any GPU ongoing reset complete, and then free outstanding BOs.

HighCVSS 7.8Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A race in the Linux AMD GPU compute driver can corrupt memory and crash the driver during recovery from a hung hardware scheduler. Exploitation requires local, low-privileged access and the affected reset sequence, so it is not a direct remote threat. Successful abuse could compromise confidentiality, integrity, and availability according to the supplied CVSS assessment.

Executive priority

Treat this as a high-priority local kernel issue on AMD GPU compute systems, especially shared or multi-user hosts. Accelerate vendor kernel updates where low-privileged users can submit GPU workloads. Systems without AMD KFD use are unlikely to reach the described path, but exact exposure should be confirmed through inventory and vendor build mapping.

Technical view

During an AMD KFD mode1 reset, user GPU queues may continue accessing system memory while cleanup frees memory and VRAM. Reallocation of that memory creates a use-after-free race, allowing queue writes to corrupt reused kernel data. The fix terminates user queues, waits for ongoing reset work to complete, and only then frees outstanding buffer objects.

Likely exposure

Exposure is concentrated on systems running affected Linux kernels with AMD KFD functionality in use. The vulnerable path requires a hardware-scheduler hang followed by mode1 reset while user queues remain active. The supplied version list is ambiguous, so administrators should map their exact distribution kernel build against vendor guidance and the referenced stable fixes.

Exploitation context

The CVSS 3.1 vector scores this 7.8: local access, low complexity, low privileges, and no user interaction, with potentially high impact. The supplied record is not in KEV and provides no evidence of active exploitation or a public exploit. Internet exposure alone does not make this directly remotely exploitable.

Researcher notes

The flaw is a timing-dependent use-after-free in reset and cleanup ordering. The trigger conditions narrow practical exposure, but kernel-memory corruption makes the potential impact serious. The normalized affected-version data repeats an introducing commit and mixes release numbers without clear fixed boundaries; use upstream commits and distribution advisories to determine build-level status.

Mitigation direction

  • Update to a vendor-supported kernel build containing the referenced AMD KFD race fix.
  • Confirm distribution backport status rather than relying solely on upstream kernel version numbers.
  • Prioritize multi-user AMD GPU compute hosts where untrusted local users can access GPU resources.
  • If patching is delayed, consult vendor guidance for supported exposure-reduction measures.

Validation and detection

  • Inventory Linux kernel builds on systems using AMD KFD GPU functionality.
  • Verify the distribution kernel changelog or advisory explicitly includes CVE-2025-37854.
  • Confirm the applicable stable fix commit is present in custom or vendor kernel sources.
  • Review driver crash records for AMD KFD failures associated with scheduler hangs or mode1 resets.
Prepared
Confidence
high
Sources
9

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-2025-37854 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
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
7.8CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Linux

Vulnerability scoring details

Base CVSS 3.1 score

7.8High
CVSS 3.1 vector shape for CVE-2025-37854Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

CVECVE Program Container
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxa4c63cafa58b4bd9e15511bab77a4752b93d3aa0, a4c63cafa58b4bd9e15511bab77a4752b93d3aa0, a4c63cafa58b4bd9e15511bab77a4752b93d3aa0, a4c63cafa58b4bd9e15511bab77a4752b93d3aa0, a4c63cafa58b4bd9e15511bab77a4752b93d3aa0, a4c63cafa58b4bd9e15511bab77a4752b93d3aa0unaffected
LinuxLinux5.18, 0, 6.1.135, 6.6.88, 6.12.24, 6.13.12, 6.14.3, 6.15affected
Weakness

CWE details

No CWE listed

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