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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> | 2021-01-09 15:35:49 +0300 |
| commit | 6bfac5d605c7d5b22b08900a35220769ce4bc696 (patch) | |
| tree | 81fbb8fae73101edaee65ef01488e779e0360952 | |
| parent | 9acf79404bcca722d9e1570a1767aaa8455c8ae7 (diff) | |
| download | linux-6bfac5d605c7d5b22b08900a35220769ce4bc696.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>
| -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 b9da2c6cc981..0bdfa90ea6cd 100644 --- a/drivers/misc/vmw_vmci/vmci_context.c +++ b/drivers/misc/vmw_vmci/vmci_context.c @@ -750,7 +750,7 @@ 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; |