CVE-2026-46105

scsi: mpt3sas: Limit NVMe request size to 2 MiB

HIGH
7.8
CVSS Score
Published: May 28, 2026 at 09:35 AM UTC
Updated: August 5, 2026 at 01:24 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: mpt3sas: Limit NVMe request size to 2 MiB The HBA firmware reports NVMe MDTS values based on the underlying drive capability. However, because the driver allocates a fixed 4K buffer for the PRP list, accommodating at most 512 entries, the driver supports a maximum I/O transfer size of 2 MiB. Limit max_hw_sectors to the smaller of the reported MDTS and the 2 MiB driver limit to prevent issuing oversized I/O that may lead to a kernel oops.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.17 ≤ v < 6.18.306.17 ≤ v < 7.0.76.17 ≤ v < 7.16.19 ≤ v < 7.0.77.1 rc17.1 rc29b8b84879d4adc506b0d3944e20b28d9f3f6994b
Vendor states this is fixed in 04631f55afc543d5431a2bdee7f6cc0f2c0debe7 (fixed)
Vendor states this is fixed in 45dcc815fc5539e88154315f36cbcb11d3a52fc2 (fixed)
Vendor states this is fixed in e5f9824817c6358b9f9738bdb92dec9e4e794d3c (fixed)
Vendor states this is fixed in 6.17 (unaffected)
Vendor states this is fixed in 6.18.30 (unaffected)
Vendor states this is fixed in 7.0.7 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-noinfo

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