| Title | QEMU における無限ループに関する脆弱性 |
|---|---|
| Summary | QEMU には、無限ループに関する脆弱性が存在します。 |
| Possible impacts | サービス運用妨害 (DoS) 状態にされる可能性があります。 |
| Solution | ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。 |
| Publication Date | Feb. 25, 2021, midnight |
| Registration Date | Nov. 26, 2021, 3:13 p.m. |
| Last Update | Nov. 26, 2021, 3:13 p.m. |
| CVSS3.0 : 警告 | |
| Score | 6 |
|---|---|
| Vector | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H |
| CVSS2.0 : 注意 | |
| Score | 2.1 |
|---|---|
| Vector | AV:L/AC:L/Au:N/C:N/I:N/A:P |
| レッドハット |
| Red Hat Enterprise Linux |
| Fedora Project |
| Fedora |
| Fabrice Bellard |
| QEMU 5.2.0 まで |
| No | Changed Details | Date of change |
|---|---|---|
| 1 | [2021年11月26日] 掲載 |
Nov. 26, 2021, 3:13 p.m. |
| Summary | A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. 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 DoS scenario. |
|---|---|
| Publication Date | March 19, 2021, 5:15 a.m. |
| Registration Date | March 19, 2021, 10:04 a.m. |
| Last Update | Nov. 21, 2024, 3:21 p.m. |
| Configuration1 | or higher | or less | more than | less than | |
| cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* | 5.2.0 | ||||
| Configuration2 | or higher | or less | more than | less than | |
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | |||||
| Configuration3 | or higher | or less | more than | less than | |
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:* | |||||
| Configuration4 | or higher | or less | more than | less than | |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | |||||