CVE-2021-3748
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- CVE-2021-3748
CVE Details
| Release Date: | 2022-03-23 | |
| Impact: | None | What is this? |
Description
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.
See more information about CVE-2021-3748 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 8.8 |
| Vector String: | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| Version: | 3.0 |
| Attack Vector: | Local |
| Attack Complexity: | Low |
| Privileges Required: | Low |
| User Interaction: | None |
| Scope: | Changed |
| Confidentiality Impact: | High |
| Integrity Impact: | High |
| Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 7 (olcne) | ELSA-2022-9491 | 2022-06-16 |
| Oracle Linux version 7 (olcne) | ELSA-2022-9492 | 2022-06-16 |
| Oracle Linux version 7 (qemu) | ELSA-2022-9432 | 2022-05-26 |
| Oracle Linux version 8 (hivex) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (hivex) | ELSA-2022-9460 | 2022-06-06 |
| Oracle Linux version 8 (libguestfs) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (libguestfs) | ELSA-2022-9460 | 2022-06-06 |
| Oracle Linux version 8 (libguestfs-winsupport) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (libguestfs-winsupport) | ELSA-2022-9460 | 2022-06-06 |
| Oracle Linux version 8 (libiscsi) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (libiscsi) | ELSA-2022-9460 | 2022-06-06 |
| Oracle Linux version 8 (libnbd) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (libnbd) | ELSA-2022-9460 | 2022-06-06 |
| Oracle Linux version 8 (libtpms) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (libvirt) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (libvirt) | ELSA-2022-9460 | 2022-06-06 |
| Oracle Linux version 8 (libvirt-dbus) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (libvirt-dbus) | ELSA-2022-9460 | 2022-06-06 |
| Oracle Linux version 8 (libvirt-python) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (libvirt-python) | ELSA-2022-9460 | 2022-06-06 |
| Oracle Linux version 8 (nbdkit) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (nbdkit) | ELSA-2022-9460 | 2022-06-06 |
| Oracle Linux version 8 (netcf) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (netcf) | ELSA-2022-9460 | 2022-06-06 |
| Oracle Linux version 8 (olcne) | ELSA-2022-9493 | 2022-06-16 |
| Oracle Linux version 8 (olcne) | ELSA-2022-9494 | 2022-06-17 |
| Oracle Linux version 8 (perl-Sys-Virt) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (perl-Sys-Virt) | ELSA-2022-9460 | 2022-06-06 |
| Oracle Linux version 8 (qemu-kvm) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (qemu-kvm) | ELSA-2022-9460 | 2022-06-06 |
| Oracle Linux version 8 (seabios) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (seabios) | ELSA-2022-9460 | 2022-06-06 |
| Oracle Linux version 8 (sgabios) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (sgabios) | ELSA-2022-9460 | 2022-06-06 |
| Oracle Linux version 8 (supermin) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (supermin) | ELSA-2022-9460 | 2022-06-06 |
| Oracle Linux version 8 (swtpm) | ELSA-2022-1759 | 2022-05-17 |
| Oracle Linux version 8 (virt-v2v) | ELSA-2022-1759 | 2022-05-17 |
This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections:
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