CVE-2022-50433
High
Description
In the Linux kernel, the following vulnerability has been resolved: efi: ssdt: Don't free memory if ACPI table was loaded successfully Amadeusz reports KASAN use-after-free errors introduced by commit 3881ee0b1edc ("efi: avoid efivars layer when loading SSDTs from variables"). The problem appears to be that the memory that holds the new ACPI table is now freed unconditionally, instead of only when the ACPI core reported a failure to load the table. So let's fix this, by omitting the kfree() on success.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedOct 1, 2025
First seenOct 1, 2025
Weakness typeCWE-416Use after free
How to fix
Update
- linux linux_kernel6.0.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.0 ≤ v < 6.0.4, 6.1 | 6.0.4 |
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