Bug 1452679 - (CVE-2017-9074) CVE-2017-9074 kernel: net: IPv6 fragmentation implementation of nexthdr field may be associated with an invalid option
CVE-2017-9074 kernel: net: IPv6 fragmentation implementation of nexthdr field...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20170516,repor...
: Security
Depends On: 1459949 1459951 1450973 1452680 1459950 1459952 1459953 1502417 1502418 1502419 1502420 1502421
Blocks: 1452682
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Reported: 2017-05-19 09:08 EDT by Andrej Nemec
Modified: 2018-02-15 20:56 EST (History)
36 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
The IPv6 fragmentation implementation in the Linux kernel does not consider that the nexthdr field may be associated with an invalid option, which allows local users to cause a denial of service (out-of-bounds read and BUG) or possibly have unspecified other impact via crafted socket and send system calls. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely.
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RHEL 7.3 requirements from Atomic Host:
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Description Andrej Nemec 2017-05-19 09:08:37 EDT
The IPv6 fragmentation implementation in the Linux kernel does not consider that the nexthdr field may be associated with an invalid option, which allows local users to cause a denial of service (out-of-bounds read and BUG) or possibly have unspecified other impact via crafted socket and send system calls. 

Upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2423496af35d94a87156b063ea5cedffc10a70a1

References:

https://patchwork.ozlabs.org/patch/763117/

https://bugzilla.novell.com/show_bug.cgi?id=1039882
Comment 1 Andrej Nemec 2017-05-19 09:09:28 EDT
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1452680]
Comment 2 Fedora Update System 2017-06-01 01:11:13 EDT
kernel-4.11.3-200.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.
Comment 5 Vladis Dronov 2017-06-08 12:18:27 EDT
Statement:

This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5. This has been rated as having Moderate security impact and is not currently planned to be addressed in future updates of this product due to its life cycle. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

This issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 6, 7 and Red Hat Enterprise MRG 2. Future kernel updates for Red Hat Enterprise Linux 6, 7 and Red Hat Enterprise MRG 2 may address this issue.
Comment 9 Fedora Update System 2017-06-13 15:57:32 EDT
kernel-4.11.4-100.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
Comment 11 errata-xmlrpc 2017-08-01 15:16:11 EDT
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:2077 https://access.redhat.com/errata/RHSA-2017:2077
Comment 12 errata-xmlrpc 2017-08-02 03:56:18 EDT
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:1842 https://access.redhat.com/errata/RHSA-2017:1842
Comment 13 errata-xmlrpc 2017-09-06 16:41:52 EDT
This issue has been addressed in the following products:

  Red Hat Enterprise MRG 2

Via RHSA-2017:2669 https://access.redhat.com/errata/RHSA-2017:2669
Comment 16 errata-xmlrpc 2018-01-25 06:31:02 EST
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2018:0169 https://access.redhat.com/errata/RHSA-2018:0169
Comment 17 Justin M. Forbes 2018-01-29 13:01:34 EST
This was fixed for Fedora with 4.12 kernel updates.

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