CVE-2026-46293 Details
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.
A vulnerability in the Linux kernel clock driver for Microchip PolarFire SoC has been addressed. The issue involved an out-of-bounds access during the registration of output dividers for certain clock IDs. This occurred because the driver only allocated space for two Phase-Locked Loops (PLLs) and their corresponding output dividers, while the defined IDs included two Delay-Locked Loops (DLLs) and their outputs, which the driver does not support. The vulnerability has been fixed by adjusting the output IDs to prevent the out-of-bounds access.
Users can apply the latest patches available in the Linux kernel stable tree to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/2f7ae8ab6aa73daaf080d5332110357c29df9c36 | kernel.org | Patch |
| https://git.kernel.org/stable/c/47bc7a03449c39805bc2665d3e57c73195d5bcf8 | kernel.org | Patch |
| https://git.kernel.org/stable/c/9ed9b580a814773482c0a4f1be045636e68cc109 | kernel.org | Patch |
| https://git.kernel.org/stable/c/a0780aeea166a7cf4706c45af4cadbb2a43a1fc9 | kernel.org | Patch |
| https://git.kernel.org/stable/c/dbfcb09656cb30439577325c9dea2250203c2e3c | kernel.org | Patch |
| https://git.kernel.org/stable/c/f24efd415455b98a1f1cfc6071fe6fde71986706 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-125 | Out-of-bounds Read | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.1, < 6.1.175 >= 6.2, < 6.6.140 >= 6.7, < 6.12.88 >= 6.13, < 6.18.30 >= 6.19, < 7.0.7 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jul 8, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 8, 2026 | New CVE Received | kernel.org |