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CVE Record

CVE-2024-49862: powercap: intel_rapl: Fix off by one in get_rpi()

In the Linux kernel, the following vulnerability has been resolved: powercap: intel_rapl: Fix off by one in get_rpi() The rp->priv->rpi array is either rpi_msr or rpi_tpmi which have NR_RAPL_PRIMITIVES number of elements. Thus the > needs to be >= to prevent an off by one access.

HighCVSS 7.1Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A Linux kernel boundary-checking error can access memory just beyond an Intel power-management array. The scoring indicates that a low-privileged local user could potentially expose data or disrupt the system. The supplied evidence does not establish a specific attack path or active exploitation.

Executive priority

Prioritize remediation on shared, multi-user, or workload-hosting Linux systems where untrusted users have local access. Schedule vendor-supported kernel updates promptly, while validating exact distribution exposure because the supplied version mapping is incomplete.

Technical view

In get_rpi(), an index equal to NR_RAPL_PRIMITIVES passed the previous “greater than” check, causing a one-element out-of-bounds access to rpi_msr or rpi_tpmi. Changing the comparison to “greater than or equal” rejects that boundary. CVSS indicates local, low-complexity, low-privilege conditions, with confidentiality and availability impacts but no scored integrity impact.

Likely exposure

Potential exposure exists on Linux hosts containing the vulnerable intel_rapl get_rpi() implementation. The supplied affected data mentions 6.5, 6.6.54, 6.10.13, 6.11.2, and 6.12, but its boundaries are ambiguous and include “0.” Confirm exposure through distributor guidance and fix-commit presence.

Exploitation context

The CVE is not listed as KEV, and the bundle provides no evidence of active exploitation. CVSS describes a local attack requiring low privileges and no user interaction. No proof of concept or reliable exploitation method is cited.

Researcher notes

This is a one-past-end array access in Linux powercap intel_rapl code. Four stable-kernel fixes are referenced, but the bundle provides no clearly interpretable introduction range, distribution package mapping, crash signature, or demonstrated exploitation primitive. Applicability and practical exploitability require branch-specific confirmation.

Mitigation direction

  • Install a vendor-supported kernel containing the applicable stable fix, then reboot into it.
  • Consult the Linux distributor's advisory for exact fixed packages and supported backports.
  • Restrict untrusted local access as a temporary control where immediate kernel remediation is impractical.

Validation and detection

  • Record each host's running kernel version and distribution package build.
  • Verify the kernel includes the applicable referenced stable fix or distributor backport.
  • Confirm remediated systems have rebooted into the updated kernel.
  • Review whether Intel RAPL powercap functionality is present on potentially affected hosts.
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

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CVE-2024-49862 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.1 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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
7.1CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H1.85.2Linux

Vulnerability scoring details

Base CVSS 3.1 score

7.1High
CVSS 3.1 vector shape for CVE-2024-49862Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux98ff639a7289067247b3ef9dd5d1e922361e7365, 98ff639a7289067247b3ef9dd5d1e922361e7365, 98ff639a7289067247b3ef9dd5d1e922361e7365, 98ff639a7289067247b3ef9dd5d1e922361e7365unaffected
LinuxLinux6.5, 0, 6.6.54, 6.10.13, 6.11.2, 6.12affected
Weakness

CWE details

No CWE listed

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