CVE-2026-23464: soc: microchip: mpfs: Fix memory leak in mpfs_sys_controller_probe()

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-03 · updated 2026-07-24
Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: soc: microchip: mpfs: Fix memory leak in mpfs_sys_controller_probe() In mpfs_sys_controller_probe(), if of_get_mtd_device_by_node() fails, the function returns immediately without freeing the allocated memory for sys_controller, leading to a memory leak. Fix this by jumping to the out_free label to ensure the memory is properly freed. Also, consolidate the error handling for the mbox_request_channel() failure case to use the same label.

Affected products

Linux kernel: from 6.8 before 6.12.78; from 6.13 before 6.18.20; from 6.19 before 6.19.10; 7.0-rc1, 7.0-rc2, 7.0-rc3, 7.0-rc4 — fixed in 6.12.78, 6.18.20, 6.19.10

How to fix

Upgrade to a fixed version: Linux kernel 6.12.78, 6.18.20, 6.19.10. Check the vendor advisory for mitigations.

References

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