CVE-2026-43141
ntb: ntb_hw_switchtec: Fix shift-out-of-bounds for 0 mw lut
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.
INFO
Published Date :
May 6, 2026, 12:16 p.m.
Last Modified :
May 6, 2026, 1:07 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the provided patch to the Linux kernel.
- Ensure rounddown_pow_of_two is called on valid values.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-43141.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-43141 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-43141
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-43141 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-43141 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 06, 2026
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/186615f8855a0be4ee7d3fcd09a8ecc10e783b08 Added Reference https://git.kernel.org/stable/c/1a867d0d79a4a570a33f2f433919ad2bd7a27b67 Added Reference https://git.kernel.org/stable/c/2e4d5e8d86a969318340be95470bb76e52392082 Added Reference https://git.kernel.org/stable/c/5590cd04d6845c01a6bad985a491c58af6fb5389 Added Reference https://git.kernel.org/stable/c/a11d03d116eef138a7249202bd772c8e61915aec Added Reference https://git.kernel.org/stable/c/a133e3caf844a3f56b6eef89ddaa66115874f6bd Added Reference https://git.kernel.org/stable/c/d0559d07afabfddaaded6a61a16154486b956764 Added Reference https://git.kernel.org/stable/c/d652ef399f131fcd5f8f34266167449ee7c9e5b3