Bug 1249442 (CVE-2015-4176) - CVE-2015-4176 kernel:deletion of a file or directory could unmount and reveal data under a mount point.
Summary: CVE-2015-4176 kernel:deletion of a file or directory could unmount and reveal...
Status: CLOSED NOTABUG
Alias: CVE-2015-4176
Product: Security Response
Classification: Other
Component: vulnerability   
(Show other bugs)
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20150506,repor...
Keywords: Security
Depends On:
Blocks: 1224245
TreeView+ depends on / blocked
 
Reported: 2015-08-03 02:07 UTC by Wade Mealing
Modified: 2017-08-25 12:26 UTC (History)
13 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
A flaw was found in the Linux kernel where the deletion of a file or directory could trigger an unmount and reveal data under a mount point. This flaw was inadvertently introduced with the new feature of being able to lazily unmount a mount tree when using file system user namespaces.
Story Points: ---
Clone Of:
Environment:
Last Closed: 2017-08-25 12:26:17 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


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Description Wade Mealing 2015-08-03 02:07:19 UTC
A flaw was found in the Linux kernel where the deletion of a file or directory could
trigger an unmount and reveal data under a mount point. This flaw was inadvertantly
introduced with the new feature of being able to lazily unmount a mount tree when
using filesystem user namespaces.

Upstream patch:

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e0c9c0afd2fc958ffa34b697972721d81df8a56f

Comment 2 Petr Matousek 2017-08-25 12:26:17 UTC
Closing, based on https://bugzilla.redhat.com/show_bug.cgi?id=1224245#c19


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