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| author | Paolo Bonzini <pbonzini@redhat.com> | 2024-07-16 09:51:14 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2024-07-16 09:51:14 -0400 |
| commit | f4501e8bc88db2548b37afe100506358f1bf7504 (patch) | |
| tree | 573b27707a299214923fb130335581c42f67eb59 /virt | |
| parent | 1c5a0b55abeb6d99ed0962c6a6fa611821949523 (diff) | |
| parent | ebbdf37ce9abb597015fa85df6630ebfa7d0a97f (diff) | |
Merge tag 'kvm-x86-fixes-6.10-11' of https://github.com/kvm-x86/linux into HEAD
KVM Xen:
Fix a bug where KVM fails to check the validity of an incoming userspace
virtual address and tries to activate a gfn_to_pfn_cache with a kernel address.
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/pfncache.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/virt/kvm/pfncache.c b/virt/kvm/pfncache.c index e3453e869e92..f0039efb9e1e 100644 --- a/virt/kvm/pfncache.c +++ b/virt/kvm/pfncache.c @@ -430,6 +430,9 @@ int kvm_gpc_activate(struct gfn_to_pfn_cache *gpc, gpa_t gpa, unsigned long len) int kvm_gpc_activate_hva(struct gfn_to_pfn_cache *gpc, unsigned long uhva, unsigned long len) { + if (!access_ok((void __user *)uhva, len)) + return -EINVAL; + return __kvm_gpc_activate(gpc, INVALID_GPA, uhva, len); } |