REDHAT-BUG-577218
First published: Fri Mar 26 2010(Updated: )
A flaw was found in the way the QEMU-KVM handled erroneous data provided by the guest Linux virtio-net driver. Due deficiency in the implementation of the TSO (TCP segment offloading), the guest's virtio-net driver transmitted improper data to the particular QEMU-KVM process on the host, resulting in its termination. A remote attacker could use this flaw to cause denial of service (guest crash) by sending certain, specially-crafted data to arbitrary open port on the target guest system. A remote attacker could exploit this to crash guests which use virtio networking on Linux kernels earlier than 2.6.26.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU QEMU-KVM | ||
| Linux Kernel | <2.6.26 |
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Reference Links
- https://rhn.redhat.com/errata/RHSA-2010-0271.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=577243#c7
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=577218#c7
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=577243#c4
- https://rhn.redhat.com/errata/RHSA-2010-0476.html
- https://bugzilla.redhat.com/show_bug.cgi?id=577218
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