Date: Fri, 26 Feb 2021 20:16:15 +0530 (IST) From: P J P <ppandit@...hat.com> To: oss security list <oss-security@...ts.openwall.com> Subject: CVE-2021-3416 QEMU: net: infinite loop in loopback mode may lead tostack overflow Hello, A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU. The said issue occurs in loopback mode of a NIC wherein reentrant DMA checks may get bypassed. 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/msg07431.html -> https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg07484.html 'CVE-2021-3416' assigned via Red Hat Inc. Thank you. -- Prasad J Pandit / Red Hat Product Security Team 8685 545E B54C 486B C6EB 271E E285 8B5A F050 DE8D
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