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Issue 823047 link

Starred by 1 user
Status: WontFix
Owner: ----
Closed: Mar 2018
Cc:
wonderfly@google.com
zsm@chromium.org
█ sawlani@google.com
chromeos-kernel-security-bug-access@google.com
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 3
Type: Bug-Security



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CVE-2017-18200 CrOS: Vulnerability reported in Linux kernel

Project Member Reported by vomit.go...@appspot.gserviceaccount.com, Mar 17 2018 
VOMIT (go/vomit) has received an external vulnerability report for the Linux kernel. 

Advisory: CVE-2017-18200
  Details: http://vomit.googleplex.com/advisory?id=CVE/CVE-2017-18200
  CVSS severity score: 4.9/10.0
  Description:

The f2fs implementation in the Linux kernel before 4.14 mishandles reference counts associated with f2fs_wait_discard_bios calls, which allows local users to cause a denial of service (BUG), as demonstrated by fstrim.



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

Comment 1 by groeck@chromium.org, Mar 17 2018

Labels: Security_Severity-Low Security_Impact-None Pri-3
Status: WontFix (was: Untriaged)
Upstream commit 638164a2718f337 ("f2fs: fix potential panic during fstrim"). chromeos-4.14 not affected per CVE. Fixes commit 969d1b180d987 ("f2fs: introduce discard_granularity sysfs entry") which is not in chromeos-4.4. On top of that,
F2FS_FS is not enabled in ChromeOS images. WontFix.

Comment 2 by groeck@chromium.org, Mar 17 2018

Cc: wonderfly@google.com zsm@chromium.org

Comment 3 by wonderfly@google.com, Mar 19 2018

Cc: sawlani@google.com
►

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