ACK: [bionic][PATCH 0/3] Patch for CVE-2019-18660

[Kleber Souza]

On 2019-11-28 16:05, Benjamin M Romer wrote:
> CVE-2019-18660:
> 
> The Linux kernel through 5.3.13 on powerpc allows Information Exposure 
> because the Spectre-RSB mitigation is not in place for all applicable 
> CPUs, aka CID-39e72bf96f58. This is related to 
> arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c.
> 
> Christopher M. Riedl (1):
>   powerpc/64s: support nospectre_v2 cmdline option
> 
> Michael Ellerman (2):
>   powerpc/book3s64: Fix link stack flush on context switch
>   KVM: PPC: Book3S HV: Flush link stack on guest exit to host kernel
> 
>  arch/powerpc/include/asm/asm-prototypes.h    |  3 +
>  arch/powerpc/include/asm/security_features.h |  3 +
>  arch/powerpc/kernel/entry_64.S               |  6 ++
>  arch/powerpc/kernel/security.c               | 74 ++++++++++++++++++--
>  arch/powerpc/kvm/book3s_hv_rmhandlers.S      | 28 ++++++++
>  5 files changed, 108 insertions(+), 6 deletions(-)
> 

Acked-by: Kleber Sacilotto de Souza <kleber.souza at canonical.com>