CVE-2026-46020Public exploit

Memory disclosure and crash via unchecked node ID

Published May 27, 2026 · Updated May 27, 2026

Out-of-bounds access in Linux Kernel 6.16 allows local users to disclose kernel memory or crash the system through DAMON_SYSFS. DAMOS node-memory quota goals pass an arbitrary nid to si_meminfo_node() and NODE_DATA() without validating that the node exists. Exploitation requires privileged access to configure DAMON_SYSFS; an invalid identifier can expose memory or cause a kernel NULL-pointer dereference.

CVSS severity7.1
High
EPSS probability0.12%
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 access in Linux Kernel 6.16 allows local users to disclose kernel memory or crash the system through DAMON_SYSFS. DAMOS node-memory quota goals pass an arbitrary nid to si_meminfo_node() and NODE_DATA() without validating that the node exists. Exploitation requires privileged access to configure DAMON_SYSFS; an invalid identifier can expose memory or cause a kernel NULL-pointer dereference.

The record

CVE
CVE-2026-46020
Published
May 27, 2026
Updated
May 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-125, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 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=0e1c773b501f33437d87b72c7d26080361e224b1 <40250b2dded0604a112be605f3828700d80ad7c2
  2. Affected versionversion=0e1c773b501f33437d87b72c7d26080361e224b1 <b09958e235f2b9cd3898b85a8529172afa80d212
  3. Affected versionversion=0e1c773b501f33437d87b72c7d26080361e224b1 <bcad74078708f2330a45b55358ebc38f8f4b1127
  4. Affected versionversion=6.16

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linux Kernelversion=0e1c773b501f33437d87b72c7d26080361e224b1 <40250b2dded0604a112be605f3828700d80ad7c2; version=0e1c773b501f33437d87b72c7d26080361e224b1 <b09958e235f2b9cd3898b85a8529172afa80d212; version=0e1c773b501f33437d87b72c7d26080361e224b1 <bcad74078708f2330a45b55358ebc38f8f4b1127; version=6.16

Published CVSS scores

7.1NVDCVSS: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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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