Messages in this thread Patch in this message |  | | From | Anant Thazhemadam <> | Subject | [PATCH] misc: vmw_vmci: fix kernel info-leak by initializing dbells in vmci_ctx_get_chkpt_doorbells() | Date | Mon, 23 Nov 2020 04:15:34 +0530 |
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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> --- drivers/misc/vmw_vmci/vmci_context.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/misc/vmw_vmci/vmci_context.c b/drivers/misc/vmw_vmci/vmci_context.c index 16695366ec92..26ff49fdf0f7 100644 --- a/drivers/misc/vmw_vmci/vmci_context.c +++ b/drivers/misc/vmw_vmci/vmci_context.c @@ -743,7 +743,7 @@ static int vmci_ctx_get_chkpt_doorbells(struct vmci_ctx *context, return VMCI_ERROR_MORE_DATA; } - dbells = kmalloc(data_size, GFP_ATOMIC); + dbells = kzalloc(data_size, GFP_ATOMIC); if (!dbells) return VMCI_ERROR_NO_MEM; -- 2.25.1
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