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Bug 1616374 - (CVE-2018-7754) CVE-2018-7754 kernel: Information Exposure in aoedisk_debugfs_show function in drivers/block/aoe/aoeblk.c
CVE-2018-7754 kernel: Information Exposure in aoedisk_debugfs_show function i...
Status: CLOSED WONTFIX
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20180809,reported=2...
: Security
Depends On: 1616375 1616376
Blocks: 1616377
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Reported: 2018-08-15 14:24 EDT by Laura Pardo
Modified: 2018-10-23 08:57 EDT (History)
52 users (show)

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Doc Text:
A flaw was found in the Linux kernel in that the aoedisk_debugfs_show() function in drivers/block/aoe/aoeblk.c allows local users to obtain some kernel address information by reading a debugfs file. This address is not useful to commit a further attack.
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Last Closed: 2018-08-23 07:22:08 EDT
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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Description Laura Pardo 2018-08-15 14:24:36 EDT 
A flaw was found in the Linux kernel in that the aoedisk_debugfs_show() function in drivers/block/aoe/aoeblk.c allows local users to obtain some kernel address information by reading a debugfs file. This address is not useful to commit a further attack.

References:

https://github.com/johnsonwangqize/cve-linux/blob/master/CVE-2018-7754.md

The introducing commit:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1cf94797c2bbc514c2bd0892e1774a0a8ca9afdb
Comment 1 Laura Pardo 2018-08-15 14:25:45 EDT 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1616376]
Comment 5 Vladis Dronov 2018-08-23 07:22:08 EDT 
Notes:

The kernel addresses revealed in the debugfs file are of the kernel objects which are allocated dynamically and does not give an information about the kernel code or the static objects location.

While a possible attacker can still use a leaked address for certain purposes we assess this flaw impact as Low.
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