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Bug 1452691 - (CVE-2017-9075) CVE-2017-9075 kernel: net: sctp_v6_create_accept_sk function mishandles inheritance
CVE-2017-9075 kernel: net: sctp_v6_create_accept_sk function mishandles inher...
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=20170517,repor...
: Security
Depends On: 1450973 1455612 1455614 1455623 1455624 1455609 1455621 1455622 1455626
Blocks: 1452530
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Reported: 2017-05-19 09:26 EDT by Andrej Nemec
Modified: 2017-09-06 16:42 EDT (History)
35 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
The sctp_v6_create_accept_sk function in net/sctp/ipv6.c in the Linux kernel mishandles inheritance, which allows local users to cause a denial of service or possibly have unspecified other impact via crafted system calls, a related issue to CVE-2017-8890. An unprivileged local user could use this flaw to induce kernel memory corruption on the system, leading to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely.
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Description Andrej Nemec 2017-05-19 09:26:53 EDT
The sctp_v6_create_accept_sk function in net/sctp/ipv6.c in the Linux kernel mishandles inheritance, which allows local users to cause a denial of service or possibly have unspecified other impact via crafted system calls, a related issue to CVE-2017-8890.

Upstream patch:

https://github.com/torvalds/linux/commit/fdcee2cbb8438702ea1b328fb6e0ac5e9a40c7f8

References:

https://patchwork.ozlabs.org/patch/763569/
Comment 1 Andrej Nemec 2017-05-19 09:29:07 EDT
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1450973]
Comment 5 Vladis Dronov 2017-05-25 11:42:31 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 10 Fedora Update System 2017-06-01 01:10:56 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 11 Fedora Update System 2017-06-13 15:57:15 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 12 errata-xmlrpc 2017-08-01 15:16:47 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 13 errata-xmlrpc 2017-08-02 03:57:00 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 14 errata-xmlrpc 2017-09-06 16:42:25 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

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