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Issue 841373 link

Starred by 2 users

Issue metadata

Status: Duplicate
Merged: issue 855938
Owner:
Closed: Jul 19
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 2
Type: Bug-Security



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CVE-2018-1118: kernel: vhost: Information disclosure in vhost/vhost.c:vhost_new_msg()

Project Member Reported by groeck@chromium.org, May 9 2018

Issue description

The Linux kernel does not properly initialize memory in messages passed between virtual guests and the host operating system in the vhost/vhost.c:vhost_new_msg() function. This can allow local privileged users to read some kernel memory contents when reading from  the /dev/vhost-net device file.

Upstream post:

https://lkml.org/lkml/2018/4/27/833
 
Project Member

Comment 2 by sheriffbot@chromium.org, May 10 2018

Labels: M-67
Project Member

Comment 3 by sheriffbot@chromium.org, May 10 2018

Labels: -Pri-2 Pri-1
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Comment 4 by sheriffbot@chromium.org, May 24 2018

groeck: Uh oh! This issue still open and hasn't been updated in the last 14 days. This is a serious vulnerability, and we want to ensure that there's progress. Could you please leave an update with the current status and any potential blockers?

If you're not the right owner for this issue, could you please remove yourself as soon as possible or help us find the right one?

If the issue is fixed or you can't reproduce it, please close the bug. If you've started working on a fix, please set the status to Started.

Thanks for your time! To disable nags, add the Disable-Nags label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Comment 5 by groeck@chromium.org, May 24 2018

Status: ExternalDependency (was: Assigned)
Sorry, sheriffbot, the fix will have to wait for an upstream solution.

Comment 6 by groeck@chromium.org, May 24 2018

Labels: -Kernel-4.4
Only affects chromeos-4.14 per https://nvd.nist.gov/vuln/detail/CVE-2018-1118.

Comment 7 by groeck@chromium.org, May 29 2018

Cc: wonderfly@google.com
Labels: -Pri-1 -Security_Severity-Medium -M-67 M-68 Security_Severity-Low Pri-2
The submitted patch generated extensive bike shedding and does not seem to be going anywhere. Requested status update.
CVE severity has still not been determined, but is likely going to be low. Adjusting severity/impact and target release. Will readjust as needed after severity has been published.

Comment 8 by groeck@chromium.org, Jun 14 2018

 Issue 852760  has been merged into this issue.
Cc: edjee@google.com
Labels: CVE-2018-1118
Upstream commit 670ae9caaca4 ("vhost: fix info leak due to uninitialized memory"). Not yet available in any stable release, but tagged for it.



Mergedinto: 855938
Status: Duplicate (was: ExternalDependency)
Fixed in chromeos-4.14 with merge of v4.14.52.
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Comment 12 by sheriffbot@chromium.org, Oct 26

Labels: allpublic
This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

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