github/acrn-hypervisor
1
0
Fork 0
mirror of https://github.com/projectacrn/acrn-hypervisor.git synced 2025-06-18 19:57:31 +00:00
Code Issues Projects Releases Wiki Activity

Add range check for 'vm0_gpa' before creating EPT

Browse Source 
Input('vm0_gpa') should be validated when handling
hypercall 'HC_VM_SET_MEMMAP to create EPT for UOS
in 'hcall_set_vm_memmap()' function.
at least 'hpa' range (from 'vm0_gpa') can't overlap
hypervisor memory region.

Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
This commit is contained in:
Yonghua Huang 2018-04-11 22:12:11 +08:00 committed by Jack Ren
parent e86b01f57e
commit a0b7fb81b4
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
hypervisor/common/hypercall.c
View File

@ -444,6 +444,14 @@ int64_t hcall_set_vm_memmap(struct vm *vm, uint64_t vmid, uint64_t param)
dev_dbg(ACRN_DBG_HYCALL, "[vm%d] gpa=0x%x hpa=0x%x size=0x%x", dev_dbg(ACRN_DBG_HYCALL, "[vm%d] gpa=0x%x hpa=0x%x size=0x%x",
vmid, memmap.remote_gpa, hpa, memmap.length); vmid, memmap.remote_gpa, hpa, memmap.length);
if (((hpa <= CONFIG_RAM_START) &&
(hpa + memmap.length > CONFIG_RAM_START)) ||
((hpa >= CONFIG_RAM_START) &&
(hpa < CONFIG_RAM_START + CONFIG_RAM_SIZE))) {
pr_err("%s: ERROR! overlap the HV memory region.", __func__);
return -1;
}
/* Check prot */ /* Check prot */
attr = 0; attr = 0;
if (memmap.type != MAP_UNMAP) { if (memmap.type != MAP_UNMAP) {