| Summary | A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe and push_pipe functions in the Linux kernel and could thus contain stale values. An unprivileged local user could use this flaw to write to pages in the page cache backed by read only files and as such escalate their privileges on the system. |
|---|---|
| Publication Date | March 11, 2022, 2:44 a.m. |
| Registration Date | March 11, 2022, 10 a.m. |
| Last Update | Nov. 21, 2024, 3:39 p.m. |
| CVSS3.1 : HIGH | |
| スコア | 7.8 |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 攻撃元区分(AV) | ローカル |
| 攻撃条件の複雑さ(AC) | 低 |
| 攻撃に必要な特権レベル(PR) | 低 |
| 利用者の関与(UI) | 不要 |
| 影響の想定範囲(S) | 変更なし |
| 機密性への影響(C) | 高 |
| 完全性への影響(I) | 高 |
| 可用性への影響(A) | 高 |
| CVSS2.0 : HIGH | |
| Score | 7.2 |
|---|---|
| Vector | AV:L/AC:L/Au:N/C:C/I:C/A:C |
| 攻撃元区分(AV) | ローカル |
| 攻撃条件の複雑さ(AC) | 低 |
| 攻撃前の認証要否(Au) | 不要 |
| 機密性への影響(C) | 高 |
| 完全性への影響(I) | 高 |
| 可用性への影響(A) | 高 |
| Get all privileges. | いいえ |
| Get user privileges | いいえ |
| Get other privileges | いいえ |
| User operation required | いいえ |
| Configuration1 | or higher | or less | more than | less than | |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.16 | 5.16.11 | |||
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.15 | 5.15.25 | |||
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.8 | 5.10.102 | |||
| Configuration2 | or higher | or less | more than | less than | |
| cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* | |||||
| Configuration3 | or higher | or less | more than | less than | |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_for_real_time:8:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv_tus:8.4:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv_tus:8.2:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_for_real_time_tus:8.4:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_for_real_time_tus:8.2:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv:8:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.1:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.2:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.2:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.1:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:* | |||||
| Configuration4 | or higher | or less | more than | less than | |
| cpe:2.3:a:redhat:codeready_linux_builder:-:*:*:*:*:*:*:* | |||||
| execution environment | |||||
| 1 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | ||||
| 2 | cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:* | ||||
| 3 | cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:* | ||||
| 4 | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:* | ||||
| 5 | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.2:*:*:*:*:*:*:* | ||||
| 6 | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:* | ||||
| Configuration5 | or higher | or less | more than | less than | |
| cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:* | |||||
| execution environment | |||||
| 1 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | ||||
| Configuration6 | or higher | or less | more than | less than | |
| cpe:2.3:a:ovirt:ovirt-engine:4.4.10.2:*:*:*:*:*:*:* | |||||
| Configuration7 | or higher | or less | more than | less than | |
| cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* | |||||
| execution environment | |||||
| 1 | cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* | ||||
| Configuration8 | or higher | or less | more than | less than | |
| cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* | |||||
| execution environment | |||||
| 1 | cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* | ||||
| Configuration9 | or higher | or less | more than | less than | |
| cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* | |||||
| execution environment | |||||
| 1 | cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* | ||||
| Configuration10 | or higher | or less | more than | less than | |
| cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:* | |||||
| execution environment | |||||
| 1 | cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:* | ||||
| Configuration11 | or higher | or less | more than | less than | |
| cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:* | |||||
| execution environment | |||||
| 1 | cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:* | ||||
| Configuration12 | or higher | or less | more than | less than | |
| cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:* | |||||
| execution environment | |||||
| 1 | cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:* | ||||
| Configuration13 | or higher | or less | more than | less than | |
| cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* | |||||
| execution environment | |||||
| 1 | cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* | ||||
| Configuration14 | or higher | or less | more than | less than | |
| cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* | |||||
| execution environment | |||||
| 1 | cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:* | ||||
| Configuration15 | or higher | or less | more than | less than | |
| cpe:2.3:o:siemens:scalance_lpe9403_firmware:*:*:*:*:*:*:*:* | 2.0 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:siemens:scalance_lpe9403:-:*:*:*:*:*:*:* | ||||
| Configuration16 | or higher | or less | more than | less than | |
| cpe:2.3:o:sonicwall:sma1000_firmware:*:*:*:*:*:*:*:* | 12.4.2-02044 | ||||
| execution environment | |||||
| 1 | cpe:2.3:h:sonicwall:sma1000:-:*:*:*:*:*:*:* | ||||
| Title | Linux Kernel における初期化に関する脆弱性 |
|---|---|
| Summary | Linux Kernel には、初期化に関する脆弱性が存在します。 |
| Possible impacts | 情報を取得される、情報を改ざんされる、およびサービス運用妨害 (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 | March 4, 2022, midnight |
| Registration Date | July 12, 2023, 3:29 p.m. |
| Last Update | Dec. 15, 2025, 2:37 p.m. |
| レッドハット |
| Red Hat Enterprise Linux |
| Red Hat Enterprise Linux EUS |
| Red Hat Enterprise Linux for IBM z Systems |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support |
| Fedora Project |
| Fedora |
| NetApp |
| H300S ファームウェア |
| シーメンス |
| SCALANCE LPE9403 ファームウェア |
| SonicWALL |
| SMA1000 ファームウェア |
| Linux |
| Linux Kernel |
| oVirt |
| oVirt-engine |
| No | Changed Details | Date of change |
|---|---|---|
| 1 | [2023年07月12日] 掲載 |
July 12, 2023, 3:29 p.m. |
| 2 | [2025年12月15日] 参考情報：JVN (JVNVU#99514792) を追加 |
Dec. 15, 2025, 12:20 p.m. |