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| author | Sebastian Ene <sebastianene@google.com> | 2026-07-02 10:38:43 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2026-07-07 11:25:50 +0100 |
| commit | 2bd3c6c702f3a9e2bcb3b536b0fbbaa645005d71 (patch) | |
| tree | 6e25f64a9070db6d60108ac28ee0d5a5734adc91 /drivers/gpu | |
| parent | 6a7a181f6921db3d9aed1bba7e15547fefd7eedc (diff) | |
KVM: arm64: Zero out the stack initialized data in the FFA handler
Don't leak hypervisor stack data when using the FFA_VERSION call.
When the compiler doesn't support -ftrivial-auto-var-init=zero option
we need to zero out the stack initialized variable before returning data
to the host caller.
Closes:
https://lore.kernel.org/all/20260616160016.C62C81F000E9@smtp.kernel.org/
Reported-by: Sashiko AI <sashiko-bot@kernel.org>
Fixes: c9c012625e12 ("KVM: arm64: Trap FFA_VERSION host call in pKVM")
Reviewed-by: Vincent Donnefort <vdonnefort@google.com>
Link: https://lore.kernel.org/all/20260616160016.C62C81F000E9@smtp.kernel.org/
Signed-off-by: Sebastian Ene <sebastianene@google.com>
Link: https://patch.msgid.link/20260702103848.1647249-7-sebastianene@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'drivers/gpu')
0 files changed, 0 insertions, 0 deletions