CVE-2024-49862

Kernel memory disclosure and crash via RAPL index

Published Oct 21, 2024 · Updated Aug 5, 2026

Out-of-bounds read in the Linux intel_rapl powercap driver allows local users to disclose kernel memory or crash the system through sysfs. The get_rpi() bounds check accepts NR_RAPL_PRIMITIVES as a valid index, reads one structure past rpi_msr or rpi_tpmi, and then uses its unvalidated id to index rd->regs. World-readable constraint attributes let an unprivileged local user reach the read path without interaction; a garbage register handle can also trigger a kernel oops.

CVSS severity7.1
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in the Linux intel_rapl powercap driver allows local users to disclose kernel memory or crash the system through sysfs. The get_rpi() bounds check accepts NR_RAPL_PRIMITIVES as a valid index, reads one structure past rpi_msr or rpi_tpmi, and then uses its unvalidated id to index rd->regs. World-readable constraint attributes let an unprivileged local user reach the read path without interaction; a garbage register handle can also trigger a kernel oops.

The record

CVE
CVE-2024-49862
Published
Oct 21, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-193, T1005, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.5
  2. Affected versionversion=98ff639a7289067247b3ef9dd5d1e922361e7365 <288cbc505e2046638c615c36357cb78bc9fee1e0
  3. Affected versionversion=98ff639a7289067247b3ef9dd5d1e922361e7365 <6a34f3b0d7f11fb6ed72da315fd2360abd9c0737
  4. Affected versionversion=98ff639a7289067247b3ef9dd5d1e922361e7365 <851e7f7f14a15f4e47b7d0f70d5c4a2b95b824d6
  5. Affected versionversion=98ff639a7289067247b3ef9dd5d1e922361e7365 <95f6580352a7225e619551febb83595bcb77ab17

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.5; version=98ff639a7289067247b3ef9dd5d1e922361e7365 <288cbc505e2046638c615c36357cb78bc9fee1e0; version=98ff639a7289067247b3ef9dd5d1e922361e7365 <6a34f3b0d7f11fb6ed72da315fd2360abd9c0737; version=98ff639a7289067247b3ef9dd5d1e922361e7365 <851e7f7f14a15f4e47b7d0f70d5c4a2b95b824d6; version=98ff639a7289067247b3ef9dd5d1e922361e7365 <95f6580352a7225e619551febb83595bcb77ab17

Published CVSS scores

7.1Linux kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-193Off-by-one Error
T1005Data from Local System
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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