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Bug 1583314 - (CVE-2018-11508) CVE-2018-11508 kernel: Missing initialization in kernel/compat.c:compat_get_timex() allows local attacker to obtain possibly sensitive information via adjtimex
CVE-2018-11508 kernel: Missing initialization in kernel/compat.c:compat_get_t...
Status: NEW
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=20180511,reported=2...
: Security
Depends On: 1588729 1583315 1583316
Blocks: 1583317
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Reported: 2018-05-28 12:47 EDT by Adam Mariš
Modified: 2018-08-28 18:44 EDT (History)
43 users (show)

See Also:
Fixed In Version: kernel 4.16.9, kernel 4.17
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the compat_get_timex function in kernel/compat.c in the Linux kernel. A local user could use this flaw to obtain possibly sensitive information from kernel memory via adjtimex system call.
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Description Adam Mariš 2018-05-28 12:47:50 EDT
The compat_get_timex function in kernel/compat.c in the Linux kernel allows local users to obtain possibly sensitive information from a kernel memory via adjtimex system call.

Reference (includes PoC):

https://bugs.chromium.org/p/project-zero/issues/detail?id=1574

Introduced by:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3a4d44b6162555070194e486ff6b3799a8d323a2

An upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0a0b98734479aa5b3c671d5190e86273372cab95
Comment 1 Adam Mariš 2018-05-28 12:48:46 EDT
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1583315]
Comment 3 Justin M. Forbes 2018-05-29 08:51:55 EDT
This was fixed for Fedora users with the 4.16.9 stable update.

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