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Bug 342703 (CVE-2010-3861) - Kernel: ETHTOOL_GRXCLSRLALL Kernel Heap Memory Leak (CVE-2010-3861)
Summary: Kernel: ETHTOOL_GRXCLSRLALL Kernel Heap Memory Leak (CVE-2010-3861)
Alias: CVE-2010-3861
Product: Gentoo Security
Classification: Unclassified
Component: Kernel (show other bugs)
Hardware: All Linux
: High normal (vote)
Assignee: Gentoo Security
Whiteboard: [linux >= 2.6.27-rc1]
Depends on:
Reported: 2010-10-26 05:58 UTC by Tim Sammut (RETIRED)
Modified: 2013-09-15 20:02 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


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Description Tim Sammut (RETIRED) gentoo-dev 2010-10-26 05:58:28 UTC
From $URL:

Calling ETHTOOL_GRXCLSRLALL with a large rule_cnt will allocate kernel
heap without clearing it. For the one driver (niu) that implements it,
it will leave the unused portion of heap unchanged and copy the full
contents back to userspace.

According to, this was introduced in 2.6.27-rc1.