Bug 1439087 (CVE-2014-9922) - CVE-2014-9922 kernel: Privilege escalation in eCryptfs subsystem via a large filesystem stack
Summary: CVE-2014-9922 kernel: Privilege escalation in eCryptfs subsystem via a large ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2014-9922
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1446439 1446440 1446441 1446442 1446443
Blocks: 1439088
TreeView+ depends on / blocked
 
Reported: 2017-04-05 08:15 UTC by Andrej Nemec
Modified: 2023-10-06 17:36 UTC (History)
36 users (show)

Fixed In Version:
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Doc Text:
A flaw was discovered in the way the kernel allows stackable filesystems to overlay. A local attacker who is able to mount filesystems can abuse this flaw to escalate privileges.
Clone Of:
Environment:
Last Closed: 2021-10-27 10:52:19 UTC
Embargoed:

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Description Andrej Nemec 2017-04-05 08:15:35 UTC 
The eCryptfs subsystem in the Linux kernel allows local users to gain privileges via layering a large filesystem stack that includes an overlayfs layer, related to fs/ecryptfs/main.c and fs/overlayfs/super.c.

Upstream patch:

https://github.com/torvalds/linux/commit/69c433ed2ecd2d3264efd7afec4439524b319121

References:

http://source.android.com/security/bulletin/2017-04-01.html
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