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Issue 899479 link

Starred by 1 user
Status: WontFix
Owner:
zsm@chromium.org
Closed: Oct 29
Cc:
wonderfly@google.com
█ sawlani@google.com
groeck@chromium.org
chromeos-kernel-security-bug-access@google.com
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 3
Type: Bug-Security



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CVE-2018-15594 CrOS: Vulnerability reported in Linux kernel

Project Member Reported by vomit.go...@appspot.gserviceaccount.com, Oct 27 
VOMIT (go/vomit) has received an external vulnerability report for the Linux kernel. 

Advisory: CVE-2018-15594
  Details: http://vomit.googleplex.com/advisory?id=CVE/CVE-2018-15594
  CVSS severity score: 2.1/10.0
  Description:

arch/x86/kernel/paravirt.c in the Linux kernel before 4.18.1 mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtual guests.



This bug was filed by http://go/vomit
Please contact us at vomit-team@google.com if you need any assistance.

Comment 1 by zsm@chromium.org, Oct 29

Cc: groeck@chromium.org wonderfly@google.com
Labels: Security_Severity-Low Security_Impact-None Pri-3
Owner: zsm@chromium.org
Status: WontFix (was: Untriaged)
Commit is 5800dc5c19("x86/paravirt: Fix spectre-v2 mitigations for paravirt guests").
The commit is present in v4.14, v4.4.
Older kernels do not have this commit. Older kernels also do not have CONFIG_PARAVIRT set either, so marking this as WontFix.

Comment 2 by groeck@chromium.org, Oct 29 

Note that we now have to look into chromeos-4.19 as well (the patch is in there).

Comment 3 by zsm@chromium.org, Oct 29 

Sounds good, thanks!

Comment 4 by wonderfly@google.com, Oct 30

Cc: sawlani@google.com
►

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