diff options
Diffstat (limited to 'system/xen/xsa/xsa203-4.8.patch')
| -rw-r--r-- | system/xen/xsa/xsa203-4.8.patch | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/system/xen/xsa/xsa203-4.8.patch b/system/xen/xsa/xsa203-4.8.patch new file mode 100644 index 0000000000..c9661a4c91 --- /dev/null +++ b/system/xen/xsa/xsa203-4.8.patch @@ -0,0 +1,19 @@ +From: Jan Beulich <jbeulich@suse.com> +Subject: x86/HVM: add missing NULL check before using VMFUNC hook + +This is XSA-203. + +Signed-off-by: Jan Beulich <jbeulich@suse.com> +Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com> + +--- a/xen/arch/x86/hvm/emulate.c ++++ b/xen/arch/x86/hvm/emulate.c +@@ -1694,6 +1694,8 @@ static int hvmemul_vmfunc( + { + int rc; + ++ if ( !hvm_funcs.altp2m_vcpu_emulate_vmfunc ) ++ return X86EMUL_UNHANDLEABLE; + rc = hvm_funcs.altp2m_vcpu_emulate_vmfunc(ctxt->regs); + if ( rc != X86EMUL_OKAY ) + hvmemul_inject_hw_exception(TRAP_invalid_op, HVM_DELIVER_NO_ERROR_CODE, |