Bug 1663072 (CVE-2018-20511) - CVE-2018-20511 kernel: Memory address exposure in drivers/net/appletalk/ipddp.c:ipddp_ioctl() by users with CAP_NET_ADMIN
Summary: CVE-2018-20511 kernel: Memory address exposure in drivers/net/appletalk/ipddp...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-20511
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 1663075
TreeView+ depends on / blocked
 
Reported: 2019-01-03 03:14 UTC by Sam Fowler
Modified: 2019-09-29 15:04 UTC (History)
30 users (show)

Fixed In Version: kernel 4.18.11
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Clone Of:
Environment:
Last Closed: 2019-01-15 11:06:22 UTC


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Description Sam Fowler 2019-01-03 03:14:21 UTC
An issue was discovered in the Linux kernel before 4.18.11. The ipddp_ioctl function in drivers/net/appletalk/ipddp.c allows local users to obtain sensitive kernel address information by leveraging CAP_NET_ADMIN to read the ipddp_route dev and next fields via an SIOCFINDIPDDPRT ioctl call.


Upstream Patch:

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9824dfae
https://github.com/torvalds/linux/commit/9824dfae
https://lkml.org/lkml/2018/9/27/480


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