CVE-2021-22566

An incorrect setting of UXN bits within mmuflagstos1pteattr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits...

Code injection

An incorrect setting of UXN bits within mmuflagstos1pteattr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits...

CVE-2021-22566 Incorrect mapping of Executable bits in Fuchsia Kernel

An incorrect setting of UXN bits within mmuflagstos1pteattr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits...

CVE-2021-22566 Incorrect mapping of Executable bits in Fuchsia Kernel

An incorrect setting of UXN bits within mmuflagstos1pteattr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits...

Two kernel-mode type-confusion / memory-corruption vulnerabilities in win32k!xxxRemoteReconnect

The Windows Kernel is subject to two related kernel-mode type-confusion vulnerabilities inside win32k!xxxRemoteReconnect. In both cases, a user-mode parameter passed to the syscall is incorrectly resolved to its underlying kernel representation via ObReferenceObjectByHandle passing NULL as the...