efi: ssdt: Don't free memory if ACPI table was loaded successfully
3Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackepss 0.1%
probabilidad de explotación
0.1%top 96% de las CVE
explotación observada
noninguna fuente lo reporta
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.
Productos afectados
Linux · Linux