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CVE-2026-46105

scsi: mpt3sas: Limit NVMe request size to 2 MiB

Published: 5/28/2026 Last updated: 8/5/2026 Reserved: 5/13/2026

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.

CNA assigner: Linux (416baaa9-dc9f-4396-8d5f-8c081fb06d67) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 7.8 High CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Opam packages affected (29)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes ortools_solvers orun rawlink rawlink-eio rawlink-lwt restricted shell solo5 solo5-bindings-hvt solo5-bindings-spt solo5-cross-aarch64 solo5-kernel-ukvm tracy-client tuntap uring vhd-format vhd-format-lwt xapi-stdext-unix

Products affected (4)

Product Vendor Version
Linux Linux Ver.2.8.x series versions prior to Ver.2.8.75, Ver.2.9.x series versions prior to Ver.2.9.40, Ver.2.10.x series versions prior to Ver.2.10.44, Ver.2.11.x series versions prior to Ver.2.11.42, and Ver.3.0.x series versions prior to Ver.3.0.1
Linux Linux LG Simple Editor 3.21.0
Linux Linux n/a
Linux Linux ImageMagick-6.7

References (6)