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Date: Thu, 25 Feb 2021 16:41:43 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: bugs-syssec@....de
Subject: CVE-2021-20255 QEMU: net: eepro100: stack overflow via
infiniterecursion
Hello,
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:
---------------
-> https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg06098.html
'CVE-2021-20255' assigned by Red Hat Inc.
This issue was reported by Sergej Schumilo, Cornelius Aschermann and Simon
Werner of Ruhr-University Bochum.
Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
8685 545E B54C 486B C6EB 271E E285 8B5A F050 DE8D
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