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| author | Anant Thazhemadam <anant.thazhemadam@gmail.com> | 2020-11-23 01:45:34 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-06 16:45:00 +0300 |
| commit | 074b61ff2127ed1e408f39783b32d1936d6aa3ac (patch) | |
| tree | 085e062488dd3ca5d6a37e3ff279b11f87a97bf2 /drivers/misc/vmw_vmci/vmci_context.c | |
| parent | b8590c82b3ccf9fb4d9f0b0b097be10736869333 (diff) | |
| download | linux-074b61ff2127ed1e408f39783b32d1936d6aa3ac.tar.xz | |
misc: vmw_vmci: fix kernel info-leak by initializing dbells in vmci_ctx_get_chkpt_doorbells()
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.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/vmw_vmci/vmci_context.c')
| -rw-r--r-- | drivers/misc/vmw_vmci/vmci_context.c | 2 |
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 bc089e634a75..26e20b091160 100644 --- 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(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; |