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CVE Record

CVE-2023-22998: In the Linux kernel before 6.0.3, drivers/gpu/drm/virtio/virtgpu_object.c misinterprets the drm_gem_shmem_g...

In the Linux kernel before 6.0.3, drivers/gpu/drm/virtio/virtgpu_object.c misinterprets the drm_gem_shmem_get_sg_table return value (expects it to be NULL in the error case, whereas it is actually an error pointer).

MediumCVSS 5.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2023-22998 is a Linux kernel denial-of-service flaw in the virtio GPU driver. A local user could trigger a kernel error path that may cause high availability impact. It is not described as remotely exploitable and CISA KEV does not list active exploitation.

Executive priority

Treat as a moderate availability issue. Patch through normal kernel maintenance, faster on shared systems, VDI, CI, or virtualized environments with untrusted local users.

Technical view

Before Linux 6.0.3, virtgpu_object.c misread drm_gem_shmem_get_sg_table failures as NULL instead of error pointers. The CVSS vector is local, low complexity, low privilege, no user interaction, with high availability impact and no stated confidentiality or integrity impact.

Likely exposure

Exposure is most likely on Linux systems running kernels before 6.0.3 where the virtio GPU DRM driver path is present or reachable. Validate distribution backports because package version strings may not match upstream kernel versions.

Exploitation context

The provided sources support local low-privilege denial of service risk. They do not claim remote exploitation, privilege escalation, public exploit availability, or active exploitation in the wild.

Researcher notes

Evidence is limited to the CVE text, upstream commit, Linux 6.0.3 changelog, and Debian LTS advisory. The sources identify the bug class and fix location but do not provide exploit details or broad product-specific impact.

Mitigation direction

  • Upgrade to a vendor kernel containing the upstream Linux 6.0.3 fix.
  • Apply Debian DLA 3404-1 where affected Debian LTS linux-5.10 packages are used.
  • Check Linux distribution advisories for backported fixes and supported package versions.
  • Prioritize systems with untrusted local users or exposed virtual graphics workloads.

Validation and detection

  • Inventory Linux kernel versions and distribution security patch levels.
  • Check whether virtio GPU DRM components are present on relevant systems.
  • Confirm the upstream fix commit or vendor backport is included.
  • Review logs for unexplained local kernel crashes or GPU driver faults.
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.

ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-436: Exact CWE lookup

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cve · low confidence lookup

CVE-2023-22998 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
0Timeline events
0ADP providers
4Source 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
5.5CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.5Medium
CVSS 3.1 vector shape for CVE-2023-22998Attack 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

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

CWE-436

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

CWE-436 · source CWE mapping

Interpretation Conflict

Interpretation Conflict represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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