Bug 1249442 - (CVE-2015-4176) CVE-2015-4176 kernel:deletion of a file or directory could unmount and reveal data under a mount point.
CVE-2015-4176 kernel:deletion of a file or directory could unmount and reveal...
Status: CLOSED NOTABUG
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20150506,repor...
: Security
Depends On:
Blocks: 1224245
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Reported: 2015-08-02 22:07 EDT by Wade Mealing
Modified: 2017-08-25 08:26 EDT (History)
13 users (show)

See Also:
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.
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Last Closed: 2017-08-25 08:26:17 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Wade Mealing 2015-08-02 22:07:19 EDT
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 08:26:17 EDT
Closing, based on https://bugzilla.redhat.com/show_bug.cgi?id=1224245#c19

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