VYPR
Unrated severityNVD Advisory· Published Feb 27, 2024· Updated May 4, 2025

ACPI: custom_method: fix potential use-after-free issue

CVE-2021-46966

Description

In the Linux kernel, the following vulnerability has been resolved:

ACPI: custom_method: fix potential use-after-free issue

In cm_write(), buf is always freed when reaching the end of the function. If the requested count is less than table.length, the allocated buffer will be freed but subsequent calls to cm_write() will still try to access it.

Remove the unconditional kfree(buf) at the end of the function and set the buf to NULL in the -EINVAL error path to match the rest of function.

Affected products

90

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

9

News mentions

0

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