SUSE CVE-2023-53216

In the Linux kernel, the following vulnerability has been resolved: arm64: efi: Make efirtlock a rawspinlock Running a rt-kernel base on 6.2.0-rc3-rt1 on an Ampere Altra outputs the following: BUG: sleeping function called from invalid context at kernel/locking/spinlockrt.c:46 inatomic: 1,...

CVE-2023-53216

CVE-2023-53216 affects the Linux kernel on ARM64 where EFI runtime services could sleep in an invalid context due to the new efi_rt_lock spinlock. The root cause is the addition of a spinlock (efi_rt_lock) introduced by commit ff7a167961d1 to execute EFI runtime services from a dedicated stack, w...