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Issue 859288 link

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Issue metadata

Status: WontFix
Owner:
Closed: Jul 2
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 2
Type: Bug-Security



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CVE-2018-11506 CrOS: Vulnerability reported in Linux kernel

Project Member Reported by vomit.go...@appspot.gserviceaccount.com, Jun 30 2018

Issue description

VOMIT (go/vomit) has received an external vulnerability report for the Linux kernel. 

Advisory: CVE-2018-11506
  Details: http://vomit.googleplex.com/advisory?id=CVE/CVE-2018-11506
  CVSS severity score: 7.2/10.0
  Description:

The sr_do_ioctl function in drivers/scsi/sr_ioctl.c in the Linux kernel through 4.16.12 allows local users to cause a denial of service (stack-based buffer overflow) or possibly have unspecified other impact because sense buffers have different sizes at the CDROM layer and the SCSI layer, as demonstrated by a CDROMREADMODE2 ioctl call.



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

 
Cc: groeck@chromium.org wonderfly@chromium.org
Labels: Security_Impact-Stable Security_Severity-High Pri-2
Owner: zsm@chromium.org
Status: Assigned (was: Untriaged)
Upstream patch is f7068114d4("sr: pass down correctly sized SCSI sense buffer")
This is present in 4.14. Other kernels do not seem to have this fix. There is a  conflict when applying to 4.4.
f7068114d4 says it fixes 82ed4db499b8. Unless I am missing something, that means that the problem does not exist in chromeos-4.4 and earlier kernels.

Labels: -Security_Impact-Stable Security_Impact-None
Status: WontFix (was: Assigned)
Thanks, yes, that seems to be the case, I've corrected the impact label.

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