CVE-2026-43141

critical

Description

In the Linux kernel, the following vulnerability has been resolved: ntb: ntb_hw_switchtec: Fix shift-out-of-bounds for 0 mw lut Number of MW LUTs depends on NTB configuration and can be set to zero, in such scenario rounddown_pow_of_two will cause undefined behaviour and should not be performed. This patch ensures that rounddown_pow_of_two is called on valid value.

References

https://git.kernel.org/stable/c/d652ef399f131fcd5f8f34266167449ee7c9e5b3

https://git.kernel.org/stable/c/d0559d07afabfddaaded6a61a16154486b956764

https://git.kernel.org/stable/c/a133e3caf844a3f56b6eef89ddaa66115874f6bd

https://git.kernel.org/stable/c/a11d03d116eef138a7249202bd772c8e61915aec

https://git.kernel.org/stable/c/5590cd04d6845c01a6bad985a491c58af6fb5389

https://git.kernel.org/stable/c/2e4d5e8d86a969318340be95470bb76e52392082

https://git.kernel.org/stable/c/1a867d0d79a4a570a33f2f433919ad2bd7a27b67

https://git.kernel.org/stable/c/186615f8855a0be4ee7d3fcd09a8ecc10e783b08

Details

Source: Mitre, NVD

Published: 2026-05-06

Updated: 2026-05-06

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical