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Bug 984722 - (CVE-2013-4127) CVE-2013-4127 kernel: vhost-net: use-after-free in vhost_net_flush
CVE-2013-4127 kernel: vhost-net: use-after-free in vhost_net_flush
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
high Severity high
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Assigned To: Red Hat Product Security
: Security
Depends On: 980643 984723
Blocks: 984728
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Reported: 2013-07-15 15:52 EDT by Petr Matousek
Modified: 2016-03-04 07:03 EST (History)
28 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2013-07-15 15:55:38 EDT
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RHEL 7.3 requirements from Atomic Host:

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Description Petr Matousek 2013-07-15 15:52:19 EDT
vhost_net_ubuf_put_and_wait has a confusing name: it will actually also free it's argument. vhost_net_flush tries to use the argument after passing it to vhost_net_ubuf_put_and_wait, this results in use after free.

Upstream fix:

Introduced by:

Introduced in upstream version:

Comment 1 Petr Matousek 2013-07-15 15:55:38 EDT

Not vulnerable.

This issue did not affect the kernel packages as shipped with Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2.

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