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domctl/sysctl: don't leak hypervisor stack to toolstacks
This is XSA-132.
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
--- a/xen/arch/x86/domctl.c
+++ b/xen/arch/x86/domctl.c
@@ -884,7 +884,7 @@ long arch_do_domctl(
case XEN_DOMCTL_gettscinfo:
{
- xen_guest_tsc_info_t info;
+ xen_guest_tsc_info_t info = { 0 };
ret = -EINVAL;
if ( d == current->domain ) /* no domain_pause() */
--- a/xen/common/sysctl.c
+++ b/xen/common/sysctl.c
@@ -76,7 +76,7 @@ long do_sysctl(XEN_GUEST_HANDLE_PARAM(xe
case XEN_SYSCTL_getdomaininfolist:
{
struct domain *d;
- struct xen_domctl_getdomaininfo info;
+ struct xen_domctl_getdomaininfo info = { 0 };
u32 num_domains = 0;
rcu_read_lock(&domlist_read_lock);
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