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authorAnant Thazhemadam <anant.thazhemadam@gmail.com>2020-11-23 01:45:34 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-12-09 21:36:26 +0300
commit31dcb6c30a26d32650ce134820f27de3c675a45a (patch)
treee3b9b8b22423a595754c38617184fc6493999e5a /drivers/misc/vmw_vmci
parent997754f114efeb290310ea8e39c8b04c2ce93961 (diff)
downloadlinux-31dcb6c30a26d32650ce134820f27de3c675a45a.tar.xz
misc: vmw_vmci: fix kernel info-leak by initializing dbells in vmci_ctx_get_chkpt_doorbells()
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.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/vmw_vmci')
-rw-r--r--drivers/misc/vmw_vmci/vmci_context.c2
1 files changed, 1 insertions, 1 deletions
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;