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CVE Record

CVE-2022-49365: drm/amdgpu: Off by one in dm_dmub_outbox1_low_irq()

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Off by one in dm_dmub_outbox1_low_irq() The > ARRAY_SIZE() should be >= ARRAY_SIZE() to prevent an out of bounds access.

MediumCVSS 5.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-49365 is a Linux kernel AMDGPU driver flaw caused by an off-by-one bounds check. A local, low-privileged user could trigger an out-of-bounds access that may crash or disrupt the system. The cited CVSS impact is availability only, with no confidentiality or integrity impact stated.

Executive priority

Treat as a moderate patching item. It can affect availability on relevant Linux AMDGPU systems, but the provided evidence does not support remote exploitation, data theft, or known active exploitation.

Technical view

The issue is in drm/amdgpu dm_dmub_outbox1_low_irq(), where a comparison used > ARRAY_SIZE() instead of >= ARRAY_SIZE(), allowing an out-of-bounds access. The CVE maps to CWE-193 and CVSS 3.1 score 5.5: local, low complexity, low privileges, no user interaction, high availability impact.

Likely exposure

Exposure is most likely on Linux systems running affected kernel builds with the AMDGPU DRM driver in use. The source bundle lists Linux kernel versions and commit identifiers, but does not provide distribution-specific package names or a complete deployment matrix.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation evidence. The CVSS vector indicates exploitation requires local access and low privileges, so this is mainly a local denial-of-service risk rather than a remote compromise risk.

Researcher notes

Evidence is limited to the CVE record and kernel stable commits. The affected-version data in the bundle is not distribution-specific, so validation should rely on distro package advisories and commit backport confirmation rather than version strings alone.

Mitigation direction

  • Update to a vendor-supported kernel containing the referenced stable fixes.
  • Check Linux distribution advisories for the exact fixed package version.
  • Prioritize shared GPU workstations and multi-user Linux systems.
  • Restrict untrusted local shell access where timely patching is delayed.

Validation and detection

  • Inventory Linux hosts using AMD GPUs or the amdgpu driver.
  • Compare kernel versions against vendor advisories and fixed package metadata.
  • Check kernel changelogs for the referenced stable commit IDs.
  • Confirm patched hosts rebooted into the updated kernel.
Prepared
Confidence
medium
Sources
6

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.

cwe · low confidence lookup

CWE-193: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cve · low confidence lookup

CVE-2022-49365 mapping review

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

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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
5Source 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-2022-49365Attack 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
LinuxLinux734d5ce02cb069cccedc993d8f1dc0ea41cfa3dd, e27c41d5b0681c597ac1894f4e02cf626e062250, e27c41d5b0681c597ac1894f4e02cf626e062250, e27c41d5b0681c597ac1894f4e02cf626e062250unaffected
LinuxLinux5.16, 0, 5.17.15, 5.18.4, 5.19affected
Weakness

CWE details

CWE-193

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