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CVE Record

CVE-2022-2380: The Linux kernel was found vulnerable out of bounds memory access in the drivers/video/fbdev/sm712fb.c:smtc...

The Linux kernel was found vulnerable out of bounds memory access in the drivers/video/fbdev/sm712fb.c:smtcfb_read() function. The vulnerability could result in local attackers being able to crash the kernel.

MediumCVSS 5.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-2380 is a Linux kernel out-of-bounds read in the sm712fb framebuffer driver. A local user could crash the kernel, causing downtime. The provided data identifies Linux kernel 5.18-rc1 and does not show remote compromise, data theft, or active exploitation.

Executive priority

Treat as a medium-priority availability risk. It matters most on shared Linux systems or environments where untrusted users can run local code. Prioritize normal kernel patching rather than emergency response unless exposed systems are business-critical.

Technical view

The issue is CWE-125 in drivers/video/fbdev/sm712fb.c, specifically smtcfb_read(). CVSS 3.1 is 5.5 with local attack vector, low complexity, low privileges, no user interaction, and high availability impact only.

Likely exposure

Exposure appears limited to Linux systems running the affected kernel code, especially builds with the SM712 framebuffer driver. The bundle only names Linux kernel 5.18-rc1, so broader downstream or backported exposure is not established here.

Exploitation context

The source bundle does not identify CISA KEV status or cited active exploitation. Based on the CVSS vector, an attacker needs local low-privileged access and could trigger a kernel crash rather than confidentiality or integrity compromise.

Researcher notes

Evidence is narrow: affected data lists Linux kernel 5.18-rc1 and one upstream commit reference. The available sources support local denial of service via out-of-bounds memory access, but not privilege escalation, remote attack, or confirmed exploitation.

Mitigation direction

  • Check vendor kernel advisories and packages for the referenced sm712fb fix.
  • Update affected kernels through normal vendor-supported channels.
  • If sm712fb is unnecessary, review vendor guidance for disabling or excluding it.
  • Restrict untrusted local shell access on systems that cannot be updated quickly.

Validation and detection

  • Inventory Linux hosts for kernel 5.18-rc1 or vendor builds containing sm712fb.
  • Confirm whether the sm712fb framebuffer driver is built, loaded, or required.
  • Review kernel package changelogs for the referenced upstream commit.
  • Track exceptions for systems awaiting vendor-fixed kernels.
Prepared
Confidence
medium
Sources
3

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-125: 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-2022-2380 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
2Source 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-2022-2380Attack 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/aKernelLinux kernel 5.18-rc1Listed
Weakness

CWE details

CWE-125

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

CWE-125 · source CWE mapping

Out-of-bounds Read

Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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