Bug 241863 - CVE-2007-2525 PPPoE socket PPPIOCGCHAN denial of service
CVE-2007-2525 PPPoE socket PPPIOCGCHAN denial of service
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel (Show other bugs)
All Linux
medium Severity high
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Assigned To: Don Howard
Martin Jenner
: Security
Depends On:
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Reported: 2007-05-31 04:20 EDT by Marcel Holtmann
Modified: 2007-11-30 17:07 EST (History)
3 users (show)

See Also:
Fixed In Version: RHSA-2007-0376
Doc Type: Bug Fix
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Last Closed: 2007-06-14 10:55:14 EDT
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Description Marcel Holtmann 2007-05-31 04:20:11 EDT
A vulnerability has been reported in the Linux Kernel, which potentially can be
exploited by malicious, local users to cause a DoS (Denial of Service).

The vulnerability is caused due to a memory leak when releasing PPPoE sockets
after they are connected, but before the "PPPIOCGCHAN" ioctl is called. This can
be exploited to cause a DoS due to memory exhaustion.
Comment 1 Don Howard 2007-06-01 19:33:11 EDT
A patch addressing this issue has been included in build 2.6.18-8.1.6.el5
Comment 3 Mike Gahagan 2007-06-08 15:16:57 EDT
Confirmed the patch is in 2.6.18-8.1.6.el5
Comment 5 Red Hat Bugzilla 2007-06-14 10:55:14 EDT
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.


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