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Bug 1615637 - (CVE-2018-15746) CVE-2018-15746 Qemu: seccomp: blacklist is not applied to all threads
CVE-2018-15746 Qemu: seccomp: blacklist is not applied to all threads
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20180813,reported=2...
: Security
Depends On: 1618356 1618357 1618358 1618503 1618504 1622976 1623283 1623284 1623285 1623286 1623287 1623288
Blocks: 1615621
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Reported: 2018-08-13 19:04 EDT by Laura Pardo
Modified: 2018-10-24 02:43 EDT (History)
38 users (show)

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Description Laura Pardo 2018-08-13 19:04:19 EDT 
An issue was found in the way QEMU implements Seccomp sandboxing. In that, all QEMU threads are not bound by the sandbox. A guest user/process maybe be able to use this flaw to invoke prohibited system calls on a host, resulting in guest crash.

Upstream patch:
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  -> https://lists.gnu.org/archive/html/qemu-devel/2018-08/msg04892.html

Reference:
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  -> http://www.openwall.com/lists/oss-security/2018/08/28/6
  -> https://lists.gnu.org/archive/html/qemu-devel/2018-08/msg02289.html
Comment 1 Prasad J Pandit 2018-08-16 09:23:45 EDT 
Acknowledgments:

Name: Jann Horn (Google.com)
Comment 2 Prasad J Pandit 2018-08-16 09:36:06 EDT 
Created qemu tracking bugs for this issue:

Affects: epel-7 [bug 1618358]
Affects: fedora-all [bug 1618357]
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