REDHAT-BUG-1930646
First published: Fri Feb 19 2021(Updated: )
A stack overflow via infinite recursion issue was found in the eepro100 i8255x device emulator of QEMU. It could occur while processing controller commands due to DMA re-entrancy issue. A guest user/process may use this flaw to consume cpu cycles or crash the QEMU process on the host resulting in DoS scenario. Upstream patch: --------------- -> <a href="https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg06098.html">https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg06098.html</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU |
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Reference Links
- https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg06098.html
- https://www.openwall.com/lists/oss-security/2021/02/25/1
- https://ruhr-uni-bochum.sciebo.de/s/NNWP2GfwzYKeKwE?path=%2Feepro100_stackoverflow1
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1930647
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1930648
- https://access.redhat.com/support/policy/updates/errata/
- https://bugzilla.redhat.com/show_bug.cgi?id=1930646
Frequently Asked Questions
What is the severity of REDHAT-BUG-1930646?
REDHAT-BUG-1930646 is classified as a critical vulnerability due to its potential to crash the QEMU process.
How do I fix REDHAT-BUG-1930646?
To fix REDHAT-BUG-1930646, apply the latest patches or updates provided by QEMU that address this stack overflow issue.
What causes REDHAT-BUG-1930646?
REDHAT-BUG-1930646 is caused by a stack overflow resulting from infinite recursion in the eepro100 i8255x device emulator.
Who is affected by REDHAT-BUG-1930646?
Users running QEMU with the eepro100 i8255x device emulator are affected by REDHAT-BUG-1930646.
Can REDHAT-BUG-1930646 lead to security risks?
Yes, REDHAT-BUG-1930646 can lead to security risks such as CPU resource exhaustion and potential denial of service.
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