NVD Vulnerability Detail

CVE-2018-20961

Summary	In the Linux kernel before 4.16.4, a double free vulnerability in the f_midi_set_alt function of drivers/usb/gadget/function/f_midi.c in the f_midi driver may allow attackers to cause a denial of service or possibly have unspecified other impact.
Publication Date	Aug. 8, 2019, 12:15 a.m.
Registration Date	March 1, 2021, 7:19 p.m.
Last Update	Nov. 21, 2024, 1:02 p.m.

CVSS3.1 : CRITICAL
スコア	9.8
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
攻撃元区分(AV)	ネットワーク
攻撃条件の複雑さ(AC)	低
攻撃に必要な特権レベル(PR)	不要
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	10.0
Vector	AV:N/AC:L/Au:N/C:C/I:C/A:C
攻撃元区分(AV)	ネットワーク
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

Affected software configurations

Configuration1	or higher	or less	more than	less than
cpe:2.3:o:linux:linux_kernel::::::::	4.4			4.4.190
cpe:2.3:o:linux:linux_kernel::::::::	4.5			4.9.96
cpe:2.3:o:linux:linux_kernel::::::::	4.10			4.14.36
cpe:2.3:o:linux:linux_kernel::::::::	4.15.0			4.16.4

Related information, measures and tools

No	URL	タグ
1	http://packetstormsecurity.com/files/154228/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html	Third Party Advisory VDB Entry
2	http://packetstormsecurity.com/files/154228/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html	Third Party Advisory VDB Entry
3	http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html	Third Party Advisory VDB Entry
4	http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html	Third Party Advisory VDB Entry
5	https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.16.4	Release Notes Vendor Advisory
6	https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.16.4	Release Notes Vendor Advisory
7	https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7fafcfdf6377b18b2a726ea554d6e593ba44349f	Exploit Mailing List Vendor Advisory
8	https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7fafcfdf6377b18b2a726ea554d6e593ba44349f	Exploit Mailing List Vendor Advisory
9	https://github.com/torvalds/linux/commit/7fafcfdf6377b18b2a726ea554d6e593ba44349f	Patch Third Party Advisory
10	https://github.com/torvalds/linux/commit/7fafcfdf6377b18b2a726ea554d6e593ba44349f	Patch Third Party Advisory
11	https://seclists.org/bugtraq/2019/Aug/48	Mailing List Third Party Advisory
12	https://seclists.org/bugtraq/2019/Aug/48	Mailing List Third Party Advisory
13	https://security.netapp.com/advisory/ntap-20190905-0002/	Third Party Advisory
14	https://security.netapp.com/advisory/ntap-20190905-0002/	Third Party Advisory
15	https://support.f5.com/csp/article/K58502654	Third Party Advisory
16	https://support.f5.com/csp/article/K58502654	Third Party Advisory
17	https://support.f5.com/csp/article/K58502654?utm_source=f5support&amp%3Butm_medium=RSS
18	https://support.f5.com/csp/article/K58502654?utm_source=f5support&amp%3Butm_medium=RSS
19	https://usn.ubuntu.com/4145-1/	Third Party Advisory
20	https://usn.ubuntu.com/4145-1/	Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-415	二重解放	https://cwe.mitre.org/data/definitions/415.html

JVN Vulnerability Information

Linux Kernel における二重解放に関する脆弱性

Title	Linux Kernel における二重解放に関する脆弱性
Summary	Linux Kernel には、二重解放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	April 24, 2018, midnight
Registration Date	Aug. 16, 2019, 4:58 p.m.
Last Update	Aug. 16, 2019, 4:58 p.m.

Affected System

Linux

Linux Kernel 4.16.4 未満

CVE (情報セキュリティ共通脆弱性識別子)

No	Name	URL
Common Vulnerabilities and Exposures (CVE)
1	CVE-2018-20961	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20961
National Vulnerability Database (NVD)
2	CVE-2018-20961	https://nvd.nist.gov/vuln/detail/CVE-2018-20961

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-415	https://cwe.mitre.org/data/definitions/415.html

ベンダー情報

No	Name	URL
ChangeLog
1	ChangeLog-4.16.4	https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.16.4
GitHub
2	USB: gadget: f_midi: fixing a possible double-free in f_midi	https://github.com/torvalds/linux/commit/7fafcfdf6377b18b2a726ea554d6e593ba44349f
Linux Kernel
3	Linux Kernel Archives	https://www.kernel.org/
Linux kernel source tree
4	USB: gadget: f_midi: fixing a possible double-free in f_midi	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7fafcfdf6377b18b2a726ea554d6e593ba44349f

Change Log

No	Changed Details	Date of change
1	[2019年08月16日] 掲載	Aug. 16, 2019, 4:58 p.m.