From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
syzbot+a79e17c39564bedf0930@syzkaller.appspotmail.com,
Anant Thazhemadam <anant.thazhemadam@gmail.com>
Subject: [PATCH 4.4 12/19] misc: vmw_vmci: fix kernel info-leak by initializing dbells in vmci_ctx_get_chkpt_doorbells()
Date: Thu, 7 Jan 2021 15:16:37 +0100 [thread overview]
Message-ID: <20210107140828.151735927@linuxfoundation.org> (raw)
In-Reply-To: <20210107140827.584658199@linuxfoundation.org>
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.com
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
@@ -750,7 +750,7 @@ 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;
next prev parent reply other threads:[~2021-01-07 14:20 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-07 14:16 [PATCH 4.4 00/19] 4.4.250-rc1 review Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 01/19] ALSA: hda/ca0132 - Fix work handling in delayed HP detection Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 02/19] ALSA: usb-audio: simplify set_sync_ep_implicit_fb_quirk Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 03/19] ALSA: usb-audio: fix sync-ep altsetting sanity check Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 04/19] ALSA: hda/realtek - Support Dell headset mode for ALC3271 Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 05/19] ALSA: hda - Fix a wrong FIXUP for alc289 on Dell machines Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 06/19] ALSA: hda/realtek - Dell headphone has noise on unmute for ALC236 Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 07/19] s390/dasd: fix hanging device offline processing Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 08/19] USB: serial: digi_acceleport: fix write-wakeup deadlocks Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 09/19] uapi: move constants from <linux/kernel.h> to <linux/const.h> Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 10/19] of: fix linker-section match-table corruption Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 11/19] reiserfs: add check for an invalid ih_entry_count Greg Kroah-Hartman
2021-01-07 14:16 ` Greg Kroah-Hartman [this message]
2021-01-07 14:16 ` [PATCH 4.4 13/19] media: gp8psk: initialize stats at power control logic Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 14/19] ALSA: seq: Use bool for snd_seq_queue internal flags Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 15/19] module: set MODULE_STATE_GOING state when a module fails to load Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 16/19] quota: Dont overflow quota file offsets Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 17/19] powerpc: sysdev: add missing iounmap() on error in mpic_msgr_probe() Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 18/19] module: delay kobject uevent until after module init call Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.4 19/19] iio:magnetometer:mag3110: Fix alignment and data leak issues Greg Kroah-Hartman
2021-01-08 1:13 ` [PATCH 4.4 00/19] 4.4.250-rc1 review Shuah Khan
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