--- title: "CVE-2011-3346\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2011-3346?format=md keywords: index, follow --- # CVE-2011-3346 Publication date 1 April 2014 Last updated 4 August 2025 --- Ubuntu priority **Low** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## Description Buffer overflow in hw/scsi-disk.c in the SCSI subsystem in QEMU before 0.15.2, as used by Xen, might allow local guest users with permission to access the CD-ROM to cause a denial of service (guest crash) via a crafted SAI READ CAPACITY SCSI command. NOTE: this is only a vulnerability when root has manually modified certain permissions or ACLs. [Read the notes from the security team](https://ubuntu.com/security/CVE-2011-3346?format=md#notes) ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | qemu-kvm | 12.10 quantal | Not affected | | 12.04 LTS precise | Not affected | | 11.10 oneiric | Not affected | | 11.04 natty | Not affected | | 10.10 maverick | Not affected | | 10.04 LTS lucid | Not affected | | 8.04 LTS hardy | Not in release | | xen | 12.10 quantal | Not affected | | 12.04 LTS precise | Not affected | | 11.10 oneiric | Not affected | | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | Not in release | | xen-3.1 | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | Ignored end of life | | xen-3.2 | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | Not affected | | xen-3.3 | 12.10 quantal | Not in release | | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Ignored end of life | | 10.10 maverick | Ignored end of life | | 10.04 LTS lucid | Not affected | | 8.04 LTS hardy | Not in release | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) * [Patch details](https://ubuntu.com/security/CVE-2011-3346?format=md#patch-details) ## Notes --- ### [jdstrand](https://launchpad.net/~jdstrand) redhat bug has reproducer non-privileged user in the guest can crash qemu. Requires write access to a scsi device, eg /dev/sr0 this only affected the RedHat xen packages, not qemu. Verified issue does not affect qemu-kvm on Ubuntu 12.04, 11.10, 11.04, 10.10, and 10.04 LTS by attaching a scsi CDROM and performing: sg\_raw -r 32768 /dev/sr0 9E 10 00 00 00 00 00 00 00 00 00 04 00 00 00 00 sg\_raw -r 32768 /dev/sr0 9E 10 00 00 00 00 00 00 00 00 00 01 00 00 00 00 hypervisor code for xen is in universe --- ### [mdeslaur](https://launchpad.net/~mdeslaur) code seems different in xen, marking as not-affected ### Patch details For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) | Package | Patch details | | --- | --- | | qemu-kvm | * Other: [7285477](http://repo.or.cz/w/qemu.git/commit/7285477ab11831b1cf56e45878a89170dd06d9b9) * Other: [103b40f](http://repo.or.cz/w/qemu.git/commit/103b40f51e4012b3b0ad20f615562a1806d7f49a) | | xen | * Vendor: | | xen-3.3 | * Vendor: | ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3346) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-3346) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-3346) * [Debian](https://security-tracker.debian.org/tracker/CVE-2011-3346) ### Other references *