CVE-2022-48966

Local kernel disclosure via unchecked RSS index

Published Oct 21, 2024 · Updated May 11, 2026

Out-of-bounds read in Linux 4.5 through 6.1-rc8 allows local users to disclose kernel memory or crash the system through RSS configuration. mvneta_config_rss accepts pp->indir[0] from the RSS indirection table, and mvneta_percpu_elect passes the unchecked value to cpu_online, reading beyond the CPU bitmap. Reachability requires low-privileged local access and a Marvell mvneta interface; the bounded effects are memory disclosure and a system crash.

CVSS severity7.1
High
EPSS probability0.24%
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 Linux 4.5 through 6.1-rc8 allows local users to disclose kernel memory or crash the system through RSS configuration. mvneta_config_rss accepts pp->indir[0] from the RSS indirection table, and mvneta_percpu_elect passes the unchecked value to cpu_online, reading beyond the CPU bitmap. Reachability requires low-privileged local access and a Marvell mvneta interface; the bounded effects are memory disclosure and a system crash.

The record

CVE
CVE-2022-48966
Published
Oct 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=4.5
  2. Affected versionversion=cad5d847a093077b499a8b0bbfe6804b9226c03e <146ebee8fcdb349d7ec0e49915e6cdafb92544ae
  3. Affected versionversion=cad5d847a093077b499a8b0bbfe6804b9226c03e <3ceffb8f410b93553fb16fe7e84aa0d35b3ba79b
  4. Affected versionversion=cad5d847a093077b499a8b0bbfe6804b9226c03e <47a1a2f6cd5ec3a4f8a2d9bfa1e0605347cdb92c
  5. Affected versionversion=cad5d847a093077b499a8b0bbfe6804b9226c03e <5a142486a0db6b0b85031f22d69acd0cdcf8f72b
  6. Affected versionversion=cad5d847a093077b499a8b0bbfe6804b9226c03e <6ca0a506dddc3e1d636935eef339576b263bf3d8
  7. Affected versionversion=cad5d847a093077b499a8b0bbfe6804b9226c03e <a6b30598fec84f8809f5417cde73071ca43e8471
  8. Affected versionversion=cad5d847a093077b499a8b0bbfe6804b9226c03e <e8b4fc13900b8e8be48debffd0dfd391772501f7
  9. Affected versionversion=cad5d847a093077b499a8b0bbfe6804b9226c03e <eec1fc21edc2bb99c9e66cf66f0b5d4d643fbb50

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.5; version=cad5d847a093077b499a8b0bbfe6804b9226c03e <146ebee8fcdb349d7ec0e49915e6cdafb92544ae; version=cad5d847a093077b499a8b0bbfe6804b9226c03e <3ceffb8f410b93553fb16fe7e84aa0d35b3ba79b; version=cad5d847a093077b499a8b0bbfe6804b9226c03e <47a1a2f6cd5ec3a4f8a2d9bfa1e0605347cdb92c; version=cad5d847a093077b499a8b0bbfe6804b9226c03e <5a142486a0db6b0b85031f22d69acd0cdcf8f72b; version=cad5d847a093077b499a8b0bbfe6804b9226c03e <6ca0a506dddc3e1d636935eef339576b263bf3d8; version=cad5d847a093077b499a8b0bbfe6804b9226c03e <a6b30598fec84f8809f5417cde73071ca43e8471; version=cad5d847a093077b499a8b0bbfe6804b9226c03e <e8b4fc13900b8e8be48debffd0dfd391772501f7; version=cad5d847a093077b499a8b0bbfe6804b9226c03e <eec1fc21edc2bb99c9e66cf66f0b5d4d643fbb50

Published CVSS scores

7.1NIST NVDCVSS: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

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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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-125Out-of-bounds Read

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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