NVD Vulnerability Detail
Search Exploit, PoC
CVE-2020-25668
Summary

A flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op.

Publication Date May 26, 2021, 9:15 p.m.
Registration Date May 27, 2021, 10 a.m.
Last Update Nov. 21, 2024, 2:18 p.m.
CVSS3.1 : HIGH
スコア 7.0
Vector CVSS:3.1/AV:L/AC:H/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)
攻撃に必要な特権レベル(PR)
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)
完全性への影響(I)
可用性への影響(A)
CVSS2.0 : MEDIUM
Score 6.9
Vector AV:L/AC:M/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)
攻撃前の認証要否(Au) 不要
機密性への影響(C)
完全性への影響(I)
可用性への影響(A)
Get all privileges. いいえ
Get user privileges いいえ
Get other privileges いいえ
User operation required いいえ
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.5 5.9.5
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.20 5.4.75
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.15 4.19.155
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.10 4.14.204
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.5 4.9.242
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.4.242
Configuration2 or higher or less more than less than
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:*
Configuration4 or higher or less more than less than
cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:*
Configuration5 or higher or less more than less than
cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*
Configuration6 or higher or less more than less than
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
Configuration7 or higher or less more than less than
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*
Configuration8 or higher or less more than less than
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*
Configuration9 or higher or less more than less than
cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*
Configuration10 or higher or less more than less than
cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*
Configuration11 or higher or less more than less than
cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*
Configuration12 or higher or less more than less than
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*
Configuration13 or higher or less more than less than
cpe:2.3:o:netapp:a250_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:a250:-:*:*:*:*:*:*:*
Configuration14 or higher or less more than less than
cpe:2.3:o:netapp:500f_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:500f:-:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List

JVN Vulnerability Information
Linux Kernel における解放済みメモリの使用に関する脆弱性
Title Linux Kernel における解放済みメモリの使用に関する脆弱性
Summary

Linux Kernel には、解放済みメモリの使用に関する脆弱性、および競合状態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 Nov. 2, 2020, midnight
Registration Date Feb. 9, 2022, 2:30 p.m.
Last Update Feb. 9, 2022, 2:30 p.m.
Affected System
Debian
Debian GNU/Linux 
Linux
Linux Kernel 
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
ベンダー情報
その他
Change Log
No Changed Details Date of change
1 [2022年02月09日]
  掲載
Feb. 9, 2022, 2:30 p.m.