oss-sec mailing list archives
Re: CVE-2016-5011: util-linux: Extended partition loop in MBR partition table leads to DoS
From: Florian Weimer <fweimer () redhat com>
Date: Mon, 11 Jul 2016 17:19:23 +0200
On 07/11/2016 01:32 PM, Cedric Buissart wrote:
I looked at other projects to see what is being done to prevent this particular loop from happening. Until now, tools I checked are protected either by detecting the loop (i.e.: actively searching for a relative offset of 0 for the next EBR, as done by this util-linux patch; partprobe and fdisk are doing that), or enforcing a limit on the maximum number of partitions for a device (Linux kernel, kpartx & other tools I currently checked)
How does util-linux protect against loops which are non-empty? Does it reject negative offsets?
Thanks, Florian
Current thread:
- CVE-2016-5011: util-linux: Extended partition loop in MBR partition table leads to DoS Cedric Buissart (Jul 11)
- Re: CVE-2016-5011: util-linux: Extended partition loop in MBR partition table leads to DoS Hanno Böck (Jul 11)
- Re: CVE-2016-5011: util-linux: Extended partition loop in MBR partition table leads to DoS Cedric Buissart (Jul 11)
- Re: CVE-2016-5011: util-linux: Extended partition loop in MBR partition table leads to DoS Florian Weimer (Jul 11)
- Re: CVE-2016-5011: util-linux: Extended partition loop in MBR partition table leads to DoS Cedric Buissart (Jul 12)
- Re: CVE-2016-5011: util-linux: Extended partition loop in MBR partition table leads to DoS Cedric Buissart (Jul 11)
- Re: CVE-2016-5011: util-linux: Extended partition loop in MBR partition table leads to DoS Hanno Böck (Jul 11)