CVE-2026-46105

Kernel oops via oversized NVMe request

Published May 28, 2026 · Updated May 28, 2026

Denial of service in the Linux kernel mpt3sas driver allows local users to trigger a kernel oops through an oversized NVMe I/O request. The driver uses the HBA-reported MDTS to set max_hw_sectors even though its fixed 4 KiB PRP-list buffer holds only 512 entries and supports 2 MiB. Reachability requires local low-privileged access and an mpt3sas-managed NVMe device; the result is a kernel oops whose service effect depends on panic-on-oops policy.

CVSS severity7.8
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel mpt3sas driver allows local users to trigger a kernel oops through an oversized NVMe I/O request. The driver uses the HBA-reported MDTS to set max_hw_sectors even though its fixed 4 KiB PRP-list buffer holds only 512 entries and supports 2 MiB. Reachability requires local low-privileged access and an mpt3sas-managed NVMe device; the result is a kernel oops whose service effect depends on panic-on-oops policy.

The record

CVE
CVE-2026-46105
Published
May 28, 2026
Updated
May 28, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 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=6.17
  2. Affected versionversion=9b8b84879d4adc506b0d3944e20b28d9f3f6994b <04631f55afc543d5431a2bdee7f6cc0f2c0debe7
  3. Affected versionversion=9b8b84879d4adc506b0d3944e20b28d9f3f6994b <45dcc815fc5539e88154315f36cbcb11d3a52fc2
  4. Affected versionversion=9b8b84879d4adc506b0d3944e20b28d9f3f6994b <e5f9824817c6358b9f9738bdb92dec9e4e794d3c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.17; version=9b8b84879d4adc506b0d3944e20b28d9f3f6994b <04631f55afc543d5431a2bdee7f6cc0f2c0debe7; version=9b8b84879d4adc506b0d3944e20b28d9f3f6994b <45dcc815fc5539e88154315f36cbcb11d3a52fc2; version=9b8b84879d4adc506b0d3944e20b28d9f3f6994b <e5f9824817c6358b9f9738bdb92dec9e4e794d3c

Published CVSS scores

7.8Linux kernel CVE teamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

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

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

T1499.004Application or System Exploitation

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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