CVE-2024-45022

Kernel memory corruption via mixed page-shift mapping

Published Sep 11, 2024 · Updated Aug 5, 2026

Memory corruption in Linux 6.1.95 through 6.1.106 and Linux 6.3 allows local users to corrupt kernel memory through vmalloc. When a high-order __GFP_NOFAIL allocation falls back to order-0 pages, vm_area_alloc_pages() creates mixed page shifts, but __vmap_pages_range_noflush() maps every page using the original high-order shift. The path requires huge vmalloc mappings and a failed high-order allocation; the resulting incorrect mapping can interrupt service.

CVSS severity5.5
Medium
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

Memory corruption in Linux 6.1.95 through 6.1.106 and Linux 6.3 allows local users to corrupt kernel memory through vmalloc. When a high-order __GFP_NOFAIL allocation falls back to order-0 pages, vm_area_alloc_pages() creates mixed page shifts, but __vmap_pages_range_noflush() maps every page using the original high-order shift. The path requires huge vmalloc mappings and a failed high-order allocation; the resulting incorrect mapping can interrupt service.

The record

CVE
CVE-2024-45022
Published
Sep 11, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 11, 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=6.1.95 <6.1.107
  2. Affected versionversion=6.3
  3. Affected versionversion=e9c3cda4d86e56bf7fe403729f38c4f0f65d3860 <61ebe5a747da649057c37be1c37eb934b4af79ca
  4. Affected versionversion=e9c3cda4d86e56bf7fe403729f38c4f0f65d3860 <c91618816f4d21fc574d7577a37722adcd4075b2
  5. Affected versionversion=e9c3cda4d86e56bf7fe403729f38c4f0f65d3860 <de7bad86345c43cd040ed43e20d9fad78a3ee59f
  6. Affected versionversion=fe5c2bdcb14c8612eb5e7a09159801c7219e9ac4 <fd1ffbb50ef4da5e1378a46616b6d7407dc795da

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.1.95 <6.1.107; version=6.3; version=e9c3cda4d86e56bf7fe403729f38c4f0f65d3860 <61ebe5a747da649057c37be1c37eb934b4af79ca; version=e9c3cda4d86e56bf7fe403729f38c4f0f65d3860 <c91618816f4d21fc574d7577a37722adcd4075b2; version=e9c3cda4d86e56bf7fe403729f38c4f0f65d3860 <de7bad86345c43cd040ed43e20d9fad78a3ee59f; version=fe5c2bdcb14c8612eb5e7a09159801c7219e9ac4 <fd1ffbb50ef4da5e1378a46616b6d7407dc795da

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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-787Out-of-bounds Write

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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