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 4.9 16/32] misc: vmw_vmci: fix kernel info-leak by initializing dbells in vmci_ctx_get_chkpt_doorbells()
Date: Thu, 7 Jan 2021 15:16:36 +0100 [thread overview]
Message-ID: <20210107140828.616984909@linuxfoundation.org> (raw)
In-Reply-To: <20210107140827.866214702@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: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-07 14:16 [PATCH 4.9 00/32] 4.9.250-rc1 review Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 01/32] x86/entry/64: Add instruction suffix Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 02/32] ALSA: hda/ca0132 - Fix work handling in delayed HP detection Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 03/32] ALSA: usb-audio: simplify set_sync_ep_implicit_fb_quirk Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 04/32] ALSA: usb-audio: fix sync-ep altsetting sanity check Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 05/32] ALSA: hda/realtek - Support Dell headset mode for ALC3271 Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 06/32] ALSA: hda - Fix a wrong FIXUP for alc289 on Dell machines Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 07/32] ALSA: hda/realtek - Dell headphone has noise on unmute for ALC236 Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 08/32] vfio/pci: Move dummy_resources_list init in vfio_pci_probe() Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 09/32] s390/dasd: fix hanging device offline processing Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 10/32] USB: serial: digi_acceleport: fix write-wakeup deadlocks Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 11/32] net: ipv6: keep sk status consistent after datagram connect failure Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 12/32] l2tp: fix races with ipv4-mapped ipv6 addresses Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 13/32] uapi: move constants from <linux/kernel.h> to <linux/const.h> Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 14/32] of: fix linker-section match-table corruption Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 15/32] 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 4.9 17/32] media: gp8psk: initialize stats at power control logic Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 18/32] ALSA: seq: Use bool for snd_seq_queue internal flags Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 19/32] module: set MODULE_STATE_GOING state when a module fails to load Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 20/32] quota: Dont overflow quota file offsets Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 21/32] powerpc: sysdev: add missing iounmap() on error in mpic_msgr_probe() Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 22/32] module: delay kobject uevent until after module init call Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 23/32] kdev_t: always inline major/minor helper functions Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 24/32] xen/xenbus: Allow watches discard events before queueing Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 25/32] xen/xenbus: Add will_handle callback support in xenbus_watch_path() Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 26/32] xen/xenbus/xen_bus_type: Support will_handle watch callback Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 27/32] xen/xenbus: Count pending messages for each watch Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 28/32] xenbus/xenbus_backend: Disallow pending watch messages Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 29/32] iio: bmi160_core: Fix sparse warning due to incorrect type in assignment Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 30/32] iio:imu:bmi160: Fix too large a buffer Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 31/32] iio:imu:bmi160: Fix alignment and data leak issues Greg Kroah-Hartman
2021-01-07 14:16 ` [PATCH 4.9 32/32] iio:magnetometer:mag3110: " Greg Kroah-Hartman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210107140828.616984909@linuxfoundation.org \
--to=gregkh@linuxfoundation.org \
--cc=anant.thazhemadam@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=stable@vger.kernel.org \
--cc=syzbot+a79e17c39564bedf0930@syzkaller.appspotmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox