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CVE Record

CVE-2024-53063: media: dvbdev: prevent the risk of out of memory access

In the Linux kernel, the following vulnerability has been resolved: media: dvbdev: prevent the risk of out of memory access The dvbdev contains a static variable used to store dvb minors. The behavior of it depends if CONFIG_DVB_DYNAMIC_MINORS is set or not. When not set, dvb_register_device() won't check for boundaries, as it will rely that a previous call to dvb_register_adapter() would already be enforcing it. On a similar way, dvb_device_open() uses the assumption that the register functions already did the needed checks. This can be fragile if some device ends using different calls. This also generate warnings on static check analysers like Coverity. So, add explicit guards to prevent potential risk of OOM issues.

HighCVSS 7.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A local, low-privileged user who can reach affected Linux DVB device handling may trigger unsafe memory access because device-minor boundaries were not always checked explicitly. The supplied CVSS assessment rates potential confidentiality, integrity, and availability impacts as high.

Executive priority

Prioritize exposed multi-user, appliance, media, and embedded Linux systems where untrusted local users can access DVB functionality. Patch through normal kernel maintenance urgently, while recognizing that the source bundle does not establish remote or active exploitation.

Technical view

When CONFIG_DVB_DYNAMIC_MINORS is disabled, dvb_register_device() relies on earlier validation by dvb_register_adapter(), while dvb_device_open() assumes registration already performed necessary checks. Different call sequences could violate those assumptions and permit unsafe array access. Linux stable fixes add explicit boundary guards to the registration and open paths.

Likely exposure

The supplied record identifies affected Linux versions from 2.6.29 through 6.12, including several stable-series endpoints. Practical exposure requires the affected DVB subsystem paths and local access. Distribution package mappings are incomplete in the bundle, so confirm status through vendor advisories.

Exploitation context

The CVSS vector describes a local, low-complexity attack requiring low privileges and no user interaction. This CVE is not marked as KEV, and the supplied sources provide no evidence of active exploitation or a public exploit.

Researcher notes

The issue concerns fragile trust between adapter registration, device registration, and open-time validation. Explicit guards harden both affected paths. The bundle's version data is not expressed as clear fixed-versus-vulnerable ranges, so stable commit ancestry and distribution backports should determine remediation status.

Mitigation direction

  • Install a vendor-supported kernel package containing the applicable Linux stable fix.
  • Reboot and ensure the system is running the updated kernel.
  • If patching is delayed, consult the distribution vendor for supported temporary mitigations.
  • Restrict untrusted local access to DVB-capable systems and relevant device interfaces pending remediation.

Validation and detection

  • Inventory running kernel versions and identify systems using Linux DVB functionality.
  • Compare distribution advisories and package changelogs with CVE-2024-53063 and the listed stable commits.
  • Confirm remediated systems booted into the updated kernel.
  • Verify local access controls limit untrusted users from reaching relevant DVB device interfaces.
Prepared
Confidence
medium
Sources
12

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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ATT&CK lookup starting points

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cwe · low confidence lookup

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cve · low confidence lookup

CVE-2024-53063 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.

2CVSS vectors
3Timeline events
2ADP providers
11Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

2 official scores

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
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

7.8High
CVSS 3.1 vector shape for CVE-2024-53063Attack 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

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux5dd3f3071070f5a306bdf8d474c80062f5691cba, 5dd3f3071070f5a306bdf8d474c80062f5691cba, 5dd3f3071070f5a306bdf8d474c80062f5691cba, 5dd3f3071070f5a306bdf8d474c80062f5691cba, 5dd3f3071070f5a306bdf8d474c80062f5691cba, 5dd3f3071070f5a306bdf8d474c80062f5691cba, 5dd3f3071070f5a306bdf8d474c80062f5691cba, 5dd3f3071070f5a306bdf8d474c80062f5691cbaunaffected
LinuxLinux2.6.29, 0, 4.19.324, 5.4.286, 5.10.230, 5.15.172, 6.1.117, 6.6.61, 6.11.8, 6.12affected
Weakness

CWE details

CWE-755

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

CWE-755 · source CWE mapping

Improper Handling of Exceptional Conditions

Improper Handling of Exceptional Conditions represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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