| Title | FreeBSD における解放済みメモリの使用に関する脆弱性 |
|---|---|
| Summary | FreeBSD 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 | 情報を取得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 | April 6, 2021, midnight |
| Registration Date | Dec. 15, 2021, 5:52 p.m. |
| Last Update | Dec. 15, 2021, 5:52 p.m. |
| CVSS3.0 : 警告 | |
| Score | 5.5 |
|---|---|
| Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| CVSS2.0 : 注意 | |
| Score | 2.1 |
|---|---|
| Vector | AV:L/AC:L/Au:N/C:P/I:N/A:N |
| FreeBSD |
| FreeBSD n245117 未満の 13.0-STABLE |
| FreeBSD p1 未満の 13.0-RC5 |
| FreeBSD p6 未満の 112.2-RELEASE |
| FreeBSD p9 未満の 11.4-RELEASE |
| FreeBSD r369551 未満の 12.2-STABLE |
| FreeBSD r369559 未満の 11.4-STABLE |
| No | Changed Details | Date of change |
|---|---|---|
| 1 | [2021年12月15日] 掲載 |
Dec. 15, 2021, 5:52 p.m. |
| Summary | In FreeBSD 13.0-STABLE before n245117, 12.2-STABLE before r369551, 11.4-STABLE before r369559, 13.0-RC5 before p1, 12.2-RELEASE before p6, and 11.4-RELEASE before p9, copy-on-write logic failed to invalidate shared memory page mappings between multiple processes allowing an unprivileged process to maintain a mapping after it is freed, allowing the process to read private data belonging to other processes or the kernel. |
|---|---|
| Publication Date | April 8, 2021, 12:15 a.m. |
| Registration Date | April 8, 2021, 10:04 a.m. |
| Last Update | Nov. 21, 2024, 3:01 p.m. |
| Configuration1 | or higher | or less | more than | less than | |
| cpe:2.3:o:freebsd:freebsd:11.4:beta1:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:11.4:-:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:11.4:rc2:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:11.4:rc1:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:11.4:p1:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:11.4:p3:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:11.4:p2:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:12.2:p1:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:12.2:p2:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:12.2:-:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* | 11.4 | ||||
| cpe:2.3:o:freebsd:freebsd:11.4:p4:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:11.4:p5:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:13.0:rc5:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:13.0:rc1:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:13.0:rc2:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:13.0:rc4:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:13.0:beta1:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:13.0:beta2:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:13.0:beta3:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:13.0:beta4:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:13.0:rc3:*:*:*:*:*:* | |||||
| cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* | 12.0 | 12.2 | |||