A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in a denial of service (DoS) scenario.
A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in a denial of service (DoS) scenario.
https://bugzilla.redhat.com/show_bug.cgi?id=1932827 https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg07431.html
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