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Vulnerability record · CVE-2026-46293 · published 8 June 2026

CVE-2026-46293: Linux kernel out-of-bounds read vulnerability

Linux · Linux Kernel

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.

7.1 CVSS 3.1 High EPSS 0.17% · top 94.7% CWE-125 · Out-of-bounds read
7.1CVSS 3.1 base score
0.17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
23 Jul 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/2f7ae8ab6aa73daaf080d5332110357c29df9c36 Patch
https://git.kernel.org/stable/c/47bc7a03449c39805bc2665d3e57c73195d5bcf8 Patch
https://git.kernel.org/stable/c/9ed9b580a814773482c0a4f1be045636e68cc109 Patch
https://git.kernel.org/stable/c/a0780aeea166a7cf4706c45af4cadbb2a43a1fc9 Patch
https://git.kernel.org/stable/c/dbfcb09656cb30439577325c9dea2250203c2e3c Patch
https://git.kernel.org/stable/c/f24efd415455b98a1f1cfc6071fe6fde71986706 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-46293), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.