NVD Vulnerability Detail

CVE-2019-12819

Summary	An issue was discovered in the Linux kernel before 5.0. The function __mdiobus_register() in drivers/net/phy/mdio_bus.c calls put_device(), which will trigger a fixed_mdio_bus_init use-after-free. This will cause a denial of service.
Publication Date	June 14, 2019, 11:29 a.m.
Registration Date	Jan. 26, 2021, 11:38 a.m.
Last Update	Nov. 21, 2024, 1:23 p.m.

CVSS3.0 : MEDIUM
スコア	5.5
Vector	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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)	なし
完全性への影響(I)	なし
可用性への影響(A)	高

CVSS2.0 : LOW
Score	2.1
Vector	AV:L/AC:L/Au:N/C:N/I:N/A:P
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)	なし
完全性への影響(I)	なし
可用性への影響(A)	低
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::::::::					5.0

Related information, measures and tools

No	URL	タグ
1	http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
2	http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
3	http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.html
4	http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.html
5	http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html
6	http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html
7	http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html
8	http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html
9	http://www.securityfocus.com/bid/108768	Third Party Advisory VDB Entry
10	http://www.securityfocus.com/bid/108768	Third Party Advisory VDB Entry
11	https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6ff7b060535e87c2ae14dd8548512abfdda528fb	Mailing List Patch Vendor Advisory
12	https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6ff7b060535e87c2ae14dd8548512abfdda528fb	Mailing List Patch Vendor Advisory
13	https://github.com/torvalds/linux/commit/6ff7b060535e87c2ae14dd8548512abfdda528fb	Patch Third Party Advisory
14	https://github.com/torvalds/linux/commit/6ff7b060535e87c2ae14dd8548512abfdda528fb	Patch Third Party Advisory
15	https://security.netapp.com/advisory/ntap-20190710-0002/
16	https://security.netapp.com/advisory/ntap-20190710-0002/
17	https://usn.ubuntu.com/4094-1/
18	https://usn.ubuntu.com/4094-1/
19	https://usn.ubuntu.com/4118-1/
20	https://usn.ubuntu.com/4118-1/

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-416	解放済みメモリの使用	https://cwe.mitre.org/data/definitions/416.html

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. 22, 2019, midnight
Registration Date	June 21, 2019, 2:38 p.m.
Last Update	June 21, 2019, 2:38 p.m.

Affected System

Linux

Linux Kernel 5.0 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-2019-12819	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12819
National Vulnerability Database (NVD)
2	CVE-2019-12819	https://nvd.nist.gov/vuln/detail/CVE-2019-12819

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-416	https://cwe.mitre.org/data/definitions/416.html

ベンダー情報

No	Name	URL
GitHub
1	mdio_bus: Fix use-after-free on device_register fails	https://github.com/torvalds/linux/commit/6ff7b060535e87c2ae14dd8548512abfdda528fb
Linux Kernel
2	Linux Kernel Archives	http://www.kernel.org
Linux kernel source tree
3	mdio_bus: Fix use-after-free on device_register fails	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6ff7b060535e87c2ae14dd8548512abfdda528fb

Change Log

No	Changed Details	Date of change
1	[2019年06月21日] 掲載	June 21, 2019, 2:38 p.m.