CVE-2026-46293
clk: microchip: mpfs-ccc: fix out of bounds access during output registration
Description
In the Linux kernel, the following vulnerability has been resolved: clk: microchip: mpfs-ccc: fix out of bounds access during output registration UBSAN reported an out of bounds access during registration of the last two outputs. This out of bounds access occurs because space is only allocated in the hws array for two PLLs and the four output dividers that each has, but the defined IDs contain two DLLS and their two outputs each, which are not supported by the driver. The ID order is PLLs -> DLLs -> PLL outputs -> DLL outputs. Decrement the PLL output IDs by two while adding them to the array to avoid the problem.
INFO
Published Date :
June 8, 2026, 5:16 p.m.
Last Modified :
June 8, 2026, 5:16 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-46293
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Decrement PLL output IDs by two when adding to the array.
- Apply the Linux kernel patch for the clk: microchip: mpfs-ccc driver.
- Verify the fix by testing PLL and DLL output registration.
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-2026-46293.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-46293 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-2026-46293
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-46293 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-46293 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
Jun. 08, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: clk: microchip: mpfs-ccc: fix out of bounds access during output registration UBSAN reported an out of bounds access during registration of the last two outputs. This out of bounds access occurs because space is only allocated in the hws array for two PLLs and the four output dividers that each has, but the defined IDs contain two DLLS and their two outputs each, which are not supported by the driver. The ID order is PLLs -> DLLs -> PLL outputs -> DLL outputs. Decrement the PLL output IDs by two while adding them to the array to avoid the problem. Added Reference https://git.kernel.org/stable/c/2f7ae8ab6aa73daaf080d5332110357c29df9c36 Added Reference https://git.kernel.org/stable/c/47bc7a03449c39805bc2665d3e57c73195d5bcf8 Added Reference https://git.kernel.org/stable/c/9ed9b580a814773482c0a4f1be045636e68cc109 Added Reference https://git.kernel.org/stable/c/a0780aeea166a7cf4706c45af4cadbb2a43a1fc9 Added Reference https://git.kernel.org/stable/c/dbfcb09656cb30439577325c9dea2250203c2e3c Added Reference https://git.kernel.org/stable/c/f24efd415455b98a1f1cfc6071fe6fde71986706