| Title | QEMU における解放済みメモリの使用に関する脆弱性 |
|---|---|
| Summary | QEMU には、解放済みメモリの使用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. 2, 2021, midnight |
| Registration Date | Nov. 30, 2021, 3:47 p.m. |
| Last Update | Nov. 30, 2021, 3:47 p.m. |
| CVSS3.0 : 低 | |
| Score | 3.2 |
|---|---|
| Vector | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L |
| CVSS2.0 : 注意 | |
| Score | 2.1 |
|---|---|
| Vector | AV:L/AC:L/Au:N/C:N/I:N/A:P |
| Fedora Project |
| Fedora |
| Fabrice Bellard |
| QEMU 2.10.0 から 5.2.0 |
| No | Changed Details | Date of change |
|---|---|---|
| 1 | [2021年11月30日] 掲載 |
Nov. 30, 2021, 3:47 p.m. |
| Summary | A use-after-free flaw was found in the MegaRAID emulator of QEMU. This issue occurs while processing SCSI I/O requests in the case of an error mptsas_free_request() that does not dequeue the request object 'req' from a pending requests queue. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. Versions between 2.10.0 and 5.2.0 are potentially affected. |
|---|---|
| Publication Date | March 24, 2021, 5:15 a.m. |
| Registration Date | March 24, 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:*:*:*:*:*:*:*:* | 2.10.0 | 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:debian:debian_linux:9.0:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | |||||