On 4/19/23 17:54, Oliver Upton wrote:
Hi Paolo,
Here is v2 of the last batch of fixes for 6.3 (for real this time!)
Details in the tag, but the noteworthy addition is Dan's fix for a
rather obvious buffer overflow when writing to a firmware register.
Please pull,
Oliver
The following changes since commit e81625218bf7986ba1351a98c43d346b15601d26:
KVM: arm64: Advertise ID_AA64PFR0_EL1.CSV2/3 to protected VMs (2023-04-04 15:52:06 +0000)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-fixes-6.3-4
for you to fetch changes up to a25bc8486f9c01c1af6b6c5657234b2eee2c39d6:
KVM: arm64: Fix buffer overflow in kvm_arm_set_fw_reg() (2023-04-19 15:22:37 +0000)
Pulled, thanks.
Paolo
----------------------------------------------------------------
KVM/arm64 fixes for 6.3, part #4
- Plug a buffer overflow due to the use of the user-provided register
width for firmware regs. Outright reject accesses where the
user register width does not match the kernel representation.
- Protect non-atomic RMW operations on vCPU flags against preemption,
as an update to the flags by an intervening preemption could be lost.
----------------------------------------------------------------
Dan Carpenter (1):
KVM: arm64: Fix buffer overflow in kvm_arm_set_fw_reg()
Marc Zyngier (1):
KVM: arm64: Make vcpu flag updates non-preemptible
arch/arm64/include/asm/kvm_host.h | 19 ++++++++++++++++++-
arch/arm64/kvm/hypercalls.c | 2 ++
2 files changed, 20 insertions(+), 1 deletion(-)
