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Bug 1563994 - (CVE-2017-0861) CVE-2017-0861 kernel: Use-after-free in snd_pcm_info function in ALSA subsystem potentially leads to privilege escalation
CVE-2017-0861 kernel: Use-after-free in snd_pcm_info function in ALSA subsyst...
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=20171205,repor...
: Security
Depends On: 1565191 1565192 1563995 1563996 1565188 1565189 1565190
Blocks: 1563998
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Reported: 2018-04-05 02:51 EDT by Adam Mariš
Modified: 2018-10-30 03:39 EDT (History)
44 users (show)

See Also:
Fixed In Version: kernel 4.15
Doc Type: If docs needed, set a value
Doc Text:
Use-after-free vulnerability in the snd_pcm_info() function in the ALSA subsystem in the Linux kernel allows attackers to induce a kernel memory corruption and possibly crash or lock up a system. Due to the nature of the flaw, a 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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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:2390 None None None 2018-08-14 14:26 EDT
Red Hat Product Errata RHSA-2018:3083 None None None 2018-10-30 03:32 EDT
Red Hat Product Errata RHSA-2018:3096 None None None 2018-10-30 03:39 EDT

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Description Adam Mariš 2018-04-05 02:51:32 EDT 
Use-after-free vulnerability in the snd_pcm_info() function in the ALSA subsystem in the Linux kernel allows attackers to induce a kernel memory corruption and possibly crash or lock up a system. Due to the nature of the flaw, a privilege escalation cannot be fully ruled out, although we believe it is unlikely.

References:

http://lists.alioth.debian.org/pipermail/secure-testing-commits/2017-December/059967.html

https://source.android.com/security/bulletin/pixel/2017-11-01#kernel-components

An upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=362bca57f5d78220f8b5907b875961af9436e229
Comment 1 Adam Mariš 2018-04-05 02:52:21 EDT 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1563995]
Comment 3 Justin M. Forbes 2018-04-05 10:29:14 EDT 
This was fixed for Fedora with the 4.14.6 stable updates.
Comment 7 errata-xmlrpc 2018-08-14 14:25:55 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2018:2390 https://access.redhat.com/errata/RHSA-2018:2390
Comment 8 errata-xmlrpc 2018-10-30 03:32:35 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3083 https://access.redhat.com/errata/RHSA-2018:3083
Comment 9 errata-xmlrpc 2018-10-30 03:38:46 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3096 https://access.redhat.com/errata/RHSA-2018:3096
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