CVSS: 6.5EPSS: 0%CPEs: 12EXPL: 0CVE-2021-3930 – QEMU: off-by-one error in mode_sense_page() in hw/scsi/scsi-disk.c
https://notcve.org/view.php?id=CVE-2021-3930
10 Dec 2021 — An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition. Se ha encontrado un error "off-by-one" en la emulación de dispositivos SCSI en QEMU. Podía ocurrir mientras eran procesados comandos MODE SELECT en mode_sense_page() si el argumento "page" era establecido... • https://bugzilla.redhat.com/show_bug.cgi?id=2020588 • CWE-193: Off-by-one Error •
CVSS: 7.5EPSS: 0%CPEs: 9EXPL: 0CVE-2021-3748 – QEMU: virtio-net: heap use-after-free in virtio_net_receive_rcu
https://notcve.org/view.php?id=CVE-2021-3748
28 Oct 2021 — A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process. Se ha encontrado una vulnerabilidad de uso de memoria previamente liberada en el dispositivo virtio-... • https://bugzilla.redhat.com/show_bug.cgi?id=1998514 • CWE-416: Use After Free •