Bug 1485265 (CVE-2017-13686) - CVE-2017-13686 kernel: NULL pointer dereference due to late check for a NULL fi field when RTM_F_FIB_MATCH is set
Summary: CVE-2017-13686 kernel: NULL pointer dereference due to late check for a NULL ...
Status: CLOSED NOTABUG
Alias: CVE-2017-13686
Product: Security Response
Classification: Other
Component: vulnerability   
(Show other bugs)
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20170816,repor...
Keywords: Security
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-08-25 08:47 UTC by Adam Mariš
Modified: 2017-08-25 08:47 UTC (History)
47 users (show)

Fixed In Version:
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Last Closed: 2017-08-25 08:47:45 UTC
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RHEL 7.3 requirements from Atomic Host:
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Description Adam Mariš 2017-08-25 08:47:02 UTC
net/ipv4/route.c in the Linux kernel 4.13-rc1 through 4.13-rc6 is too
late to check for a NULL fi field when RTM_F_FIB_MATCH is set, which
allows local users to cause a denial of service (NULL pointer
dereference) or possibly have unspecified other impact via crafted
system calls. NOTE: this does not affect any stable release.

Upstream patch:

https://github.com/torvalds/linux/commit/bc3aae2bbac46dd894c89db5d5e98f7f0ef9e205


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