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Bug 472476 (CVE-2013-2148) - Kernel : fanotify: info leak in copy_event_to_user (CVE-2013-2148)
Summary: Kernel : fanotify: info leak in copy_event_to_user (CVE-2013-2148)
Alias: CVE-2013-2148
Product: Gentoo Security
Classification: Unclassified
Component: Kernel (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo Kernel Security
Depends on:
Reported: 2013-06-06 07:51 UTC by Agostino Sarubbo
Modified: 2022-03-25 15:17 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


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Description Agostino Sarubbo gentoo-dev 2013-06-06 07:51:08 UTC
From ${URL} :

Linux kernel built with the Filesystem wide access notification
(CONFIG_FANOTIFY) support is vulnerable to an information leakage
flaw. The leaked bytes could be accessed via read(2) call on the
fanotify descriptor.

A user/program could use this flaw to leak kernel memory bytes.

Upstream fix:
Comment 1 GLSAMaker/CVETool Bot gentoo-dev 2013-08-30 01:39:49 UTC
CVE-2013-2148 (
  The fill_event_metadata function in fs/notify/fanotify/fanotify_user.c in
  the Linux kernel through 3.9.4 does not initialize a certain structure
  member, which allows local users to obtain sensitive information from kernel
  memory via a read operation on the fanotify descriptor.
Comment 2 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2022-03-25 15:17:53 UTC is de1e0c40aceb9d5bff09c3a3b97b2f1b178af53f,
in 3.10.6 onwards.