CVE-2026-93046

Out-of-bounds read via wrapped index bounds check

Published Sep 17, 2026 · Updated Sep 18, 2026

Out-of-bounds access in the Linux kernel allows local users to read beyond a software-node property array through a crafted index. In software_node_get_reference_args(), adding one to UINT_MAX wraps before the length comparison, so the check accepts an invalid array index. The published assessment requires local low-privilege access, but the record does not establish whether the read discloses data, crashes the system, or has another effect.

CVSS severity7.0
High
EPSS probability0.14%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in the Linux kernel allows local users to read beyond a software-node property array through a crafted index. In software_node_get_reference_args(), adding one to UINT_MAX wraps before the length comparison, so the check accepts an invalid array index. The published assessment requires local low-privilege access, but the record does not establish whether the read discloses data, crashes the system, or has another effect.

The record

CVE
CVE-2026-93046
Published
Sep 17, 2026
Updated
Sep 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=142acd739eb6f08c148a96ae8309256f1422ff4b <6cde06887487b4febd14658c9a246616abcc0097
  2. Affected versionversion=31e4e12e0e9609850cefd4b2e1adf782f56337d6 <231bbc04c58f115a505bf3b668ec69ef40a1773b
  3. Affected versionversion=31e4e12e0e9609850cefd4b2e1adf782f56337d6 <ba3dedcf3bd47017307595a7e54924198f018246
  4. Affected versionversion=31e4e12e0e9609850cefd4b2e1adf782f56337d6 <df5466412b362db7adfa78e3e092fe07ac6769a4
  5. Affected versionversion=4b3383110b6df48e0ba5936af2cb68d5eb6bd43b <849076df15129e47dd8db751fa18489419ffea56
  6. Affected versionversion=5.10.239 <5.10.270
  7. Affected versionversion=5.15.186 <5.15.221
  8. Affected versionversion=56ce76e8d406cc72b89aee7931df5cf3f18db49d <0631384eadebc66d92d2dd72d57a0263c3877bee
  9. Affected versionversion=6.1.142 <6.1.188
  10. Affected versionversion=6.12.35 <6.12.110
  11. Affected versionversion=6.15.4 <6.16
  12. Affected versionversion=6.16
  13. Affected versionversion=6.6.95 <6.6.157
  14. Affected versionversion=7af18e42bdefe1dba5bcb32555a4d524fd504939
  15. Affected versionversion=9324127b07dde8529222dc19233aa57ec810856c <b2fa4e8c7e4a33e02e6aaa8f6df72f84cf4aed75
  16. Affected versionversion=f9397cf7bfb680799fb8c7f717c8f756384c3280 <4ebf96d5f834aba7f6d0397db4c421f6078171b9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=142acd739eb6f08c148a96ae8309256f1422ff4b <6cde06887487b4febd14658c9a246616abcc0097; version=31e4e12e0e9609850cefd4b2e1adf782f56337d6 <231bbc04c58f115a505bf3b668ec69ef40a1773b; version=31e4e12e0e9609850cefd4b2e1adf782f56337d6 <ba3dedcf3bd47017307595a7e54924198f018246; version=31e4e12e0e9609850cefd4b2e1adf782f56337d6 <df5466412b362db7adfa78e3e092fe07ac6769a4; version=4b3383110b6df48e0ba5936af2cb68d5eb6bd43b <849076df15129e47dd8db751fa18489419ffea56; version=5.10.239 <5.10.270; version=5.15.186 <5.15.221; version=56ce76e8d406cc72b89aee7931df5cf3f18db49d <0631384eadebc66d92d2dd72d57a0263c3877bee; version=6.1.142 <6.1.188; version=6.12.35 <6.12.110; version=6.15.4 <6.16; version=6.16; version=6.6.95 <6.6.157; version=7af18e42bdefe1dba5bcb32555a4d524fd504939; version=9324127b07dde8529222dc19233aa57ec810856c <b2fa4e8c7e4a33e02e6aaa8f6df72f84cf4aed75; version=f9397cf7bfb680799fb8c7f717c8f756384c3280 <4ebf96d5f834aba7f6d0397db4c421f6078171b9

Published CVSS scores

7.0GitHubCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5Amazon LinuxCVSS: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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

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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