From: Anant Thazhemadam anant.thazhemadam@gmail.com
commit 31dcb6c30a26d32650ce134820f27de3c675a45a upstream.
A kernel-infoleak was reported by syzbot, which was caused because dbells was left uninitialized. Using kzalloc() instead of kmalloc() fixes this issue.
Reported-by: syzbot+a79e17c39564bedf0930@syzkaller.appspotmail.com Tested-by: syzbot+a79e17c39564bedf0930@syzkaller.appspotmail.com Signed-off-by: Anant Thazhemadam anant.thazhemadam@gmail.com Link: https://lore.kernel.org/r/20201122224534.333471-1-anant.thazhemadam@gmail.co... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/misc/vmw_vmci/vmci_context.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/misc/vmw_vmci/vmci_context.c +++ b/drivers/misc/vmw_vmci/vmci_context.c @@ -751,7 +751,7 @@ static int vmci_ctx_get_chkpt_doorbells( return VMCI_ERROR_MORE_DATA; }
- dbells = kmalloc(data_size, GFP_ATOMIC); + dbells = kzalloc(data_size, GFP_ATOMIC); if (!dbells) return VMCI_ERROR_NO_MEM;