NVD Vulnerability Detail

CVE-2016-4805

Summary	Use-after-free vulnerability in drivers/net/ppp/ppp_generic.c in the Linux kernel before 4.5.2 allows local users to cause a denial of service (memory corruption and system crash, or spinlock) or possibly have unspecified other impact by removing a network namespace, related to the ppp_register_net_channel and ppp_unregister_channel functions.
Publication Date	May 23, 2016, 7:59 p.m.
Registration Date	Jan. 26, 2021, 2:12 p.m.
Last Update	Nov. 21, 2024, 11:53 a.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

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:o:novell:suse_linux_enterprise_desktop:12.0:-::::::

Configuration2		or higher	or less	more than	less than
cpe:2.3:a:novell:suse_linux_enterprise_workstation_extension:12.0:-::::::

Configuration3		or higher	or less	more than	less than
cpe:2.3:a:novell:suse_linux_enterprise_module_for_public_cloud:12.0:-::::::

Configuration4		or higher	or less	more than	less than
cpe:2.3:o:novell:suse_linux_enterprise_server:11.0:sp4::::::

Configuration5		or higher	or less	more than	less than
cpe:2.3:a:novell:suse_linux_enterprise_module_for_public_cloud:12.0:-::::::

Configuration6		or higher	or less	more than	less than
cpe:2.3:o:novell:opensuse_leap:42.1:::::::*

Configuration7		or higher	or less	more than	less than
cpe:2.3:a:novell:suse_linux_enterprise_software_development_kit:11.0:sp4::::::

Configuration8		or higher	or less	more than	less than
cpe:2.3:o:redhat:enterprise_linux:6.0:::::::*

Configuration9		or higher	or less	more than	less than
cpe:2.3:o:canonical:ubuntu_linux:12.04:-:lts:::::*

Configuration10	or higher	or less	more than	less than
cpe:2.3:o:linux:linux_kernel::::::::	3.11			3.12.59
cpe:2.3:o:linux:linux_kernel::::::::	3.13			3.14.67
cpe:2.3:o:linux:linux_kernel::::::::	3.15			3.16.35
cpe:2.3:o:linux:linux_kernel::::::::	3.17			3.18.37
cpe:2.3:o:linux:linux_kernel::::::::	3.19			4.1.28
cpe:2.3:o:linux:linux_kernel::::::::	3.3			3.10.102
cpe:2.3:o:linux:linux_kernel::::::::	2.6.30			3.2.80
cpe:2.3:o:linux:linux_kernel::::::::	4.2			4.4.8
cpe:2.3:o:linux:linux_kernel::::::::	4.5			4.5.2

Configuration11		or higher	or less	more than	less than
cpe:2.3:a:novell:suse_linux_enterprise_software_development_kit:12.0:-::::::

Configuration12		or higher	or less	more than	less than
cpe:2.3:a:novell:suse_linux_enterprise_workstation_extension:12.0:sp1::::::

Configuration13		or higher	or less	more than	less than
cpe:2.3:o:novell:suse_linux_enterprise_server:12.0:-::::::

Configuration14		or higher	or less	more than	less than
cpe:2.3:o:novell:suse_linux_enterprise_desktop:12.0:sp1::::::

Configuration15		or higher	or less	more than	less than
cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*

Configuration16		or higher	or less	more than	less than
cpe:2.3:o:oracle:linux:6:::::::*

Configuration17		or higher	or less	more than	less than
cpe:2.3:o:novell:suse_linux_enterprise_real_time_extension:11.0:sp4::::::

Configuration18		or higher	or less	more than	less than
cpe:2.3:o:novell:suse_linux_enterprise_server:12.0:sp1::::::

Configuration19		or higher	or less	more than	less than
cpe:2.3:o:novell:suse_linux_enterprise_real_time_extension:12.0:sp1::::::

Configuration20		or higher	or less	more than	less than
cpe:2.3:a:novell:suse_linux_enterprise_software_development_kit:12.0:sp1::::::

Configuration21		or higher	or less	more than	less than
cpe:2.3:a:novell:suse_linux_enterprise_live_patching:12.0:-::::::

Related information, measures and tools

No	URL	タグ
1	http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1f461dcdd296eecedaffffc6bae2bfa90bd7eb89	Patch Vendor Advisory
2	http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1f461dcdd296eecedaffffc6bae2bfa90bd7eb89	Patch Vendor Advisory
3	http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html	Mailing List Third Party Advisory
4	http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html	Mailing List Third Party Advisory
5	http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html	Mailing List Release Notes Third Party Advisory
6	http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html	Mailing List Release Notes Third Party Advisory
7	http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html	Mailing List Release Notes Third Party Advisory
8	http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html	Mailing List Release Notes Third Party Advisory
9	http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html	Mailing List Release Notes Third Party Advisory
10	http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html	Mailing List Release Notes Third Party Advisory
11	http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html	Mailing List Third Party Advisory
12	http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html	Mailing List Third Party Advisory
13	http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html	Mailing List Third Party Advisory
14	http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html	Mailing List Third Party Advisory
15	http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html	Mailing List Third Party Advisory
16	http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html	Mailing List Third Party Advisory
17	http://www.debian.org/security/2016/dsa-3607	Third Party Advisory
18	http://www.debian.org/security/2016/dsa-3607	Third Party Advisory
19	http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.2	Mailing List Vendor Advisory
20	http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.2	Mailing List Vendor Advisory
21	http://www.openwall.com/lists/oss-security/2016/05/15/2	Mailing List Patch Third Party Advisory
22	http://www.openwall.com/lists/oss-security/2016/05/15/2	Mailing List Patch Third Party Advisory
23	http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html	Third Party Advisory
24	http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html	Third Party Advisory
25	http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html	Third Party Advisory
26	http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html	Third Party Advisory
27	http://www.securityfocus.com/bid/90605	Third Party Advisory VDB Entry
28	http://www.securityfocus.com/bid/90605	Third Party Advisory VDB Entry
29	http://www.securitytracker.com/id/1036763	Third Party Advisory VDB Entry
30	http://www.securitytracker.com/id/1036763	Third Party Advisory VDB Entry
31	http://www.ubuntu.com/usn/USN-3021-1	Third Party Advisory
32	http://www.ubuntu.com/usn/USN-3021-1	Third Party Advisory
33	http://www.ubuntu.com/usn/USN-3021-2	Third Party Advisory
34	http://www.ubuntu.com/usn/USN-3021-2	Third Party Advisory
35	https://bugzilla.redhat.com/show_bug.cgi?id=1335803	Issue Tracking Third Party Advisory
36	https://bugzilla.redhat.com/show_bug.cgi?id=1335803	Issue Tracking Third Party Advisory
37	https://github.com/torvalds/linux/commit/1f461dcdd296eecedaffffc6bae2bfa90bd7eb89	Patch Third Party Advisory
38	https://github.com/torvalds/linux/commit/1f461dcdd296eecedaffffc6bae2bfa90bd7eb89	Patch Third Party Advisory

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 の drivers/net/ppp/ppp_generic.c におけるサービス運用妨害 (DoS) の脆弱性

Title	Linux Kernel の drivers/net/ppp/ppp_generic.c におけるサービス運用妨害 (DoS) の脆弱性
Summary	Linux Kernel の drivers/net/ppp/ppp_generic.c には、解放済みメモリの使用 (Use-after-free) により、サービス運用妨害 (メモリ破損、システムクラッシュ、またはスピンロック) 状態にされるなど、不特定の影響を受ける脆弱性が存在します。補足情報 : CWE による脆弱性タイプは、CWE-416: Use After Free (解放済みメモリの使用) と識別されています。 http://cwe.mitre.org/data/definitions/416.html
Possible impacts	ローカルユーザにより、ネットワークの名前空間を削除されることで、サービス運用妨害 (メモリ破損、システムクラッシュ、またはスピンロック) 状態にされるなど、不特定の影響を受け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 20, 2016, midnight
Registration Date	May 26, 2016, 3:23 p.m.
Last Update	Oct. 27, 2016, 1:45 p.m.

Affected System

レッドハット

Red Hat Enterprise Linux

オラクル

Oracle Linux

Canonical

Ubuntu

SUSE

SUSE Linux Enterprise Debuginfo

SUSE Linux Enterprise Desktop

SUSE Linux Enterprise Live Patching

SUSE Linux Enterprise Module for Public Cloud

SUSE Linux Enterprise Real Time Extension

SUSE Linux Enterprise Server

SUSE Linux Enterprise Software Development Kit

SUSE Linux Enterprise Workstation Extension

openSUSE project

openSUSE Leap

Linux

Linux Kernel 4.5.2 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-2016-4805	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4805
National Vulnerability Database (NVD)
2	CVE-2016-4805	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-4805

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-Other	https://www.ipa.go.jp/security/vuln/CWE.html#CWEOther

ベンダー情報

No	Name	URL
Bugzilla
1	Bug 980371	https://bugzilla.opensuse.org/show_bug.cgi?id=980371
ChangeLog
2	ChangeLog-4.5.2	https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.2
GitHub
3	ppp: take reference on channels netns	https://github.com/torvalds/linux/commit/1f461dcdd296eecedaffffc6bae2bfa90bd7eb89
Linux Kernel
4	Linux Kernel Archives	http://www.kernel.org
Linux kernel source tree
5	ppp: take reference on channels netns	http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1f461dcdd296eecedaffffc6bae2bfa90bd7eb89
opensuse-security-announce
6	SUSE-SU-2016:1672	http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html
7	SUSE-SU-2016:1690	http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html
8	SUSE-SU-2016:1937	http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html
Oracle Critical Patch Update
9	Oracle Linux Bulletin - July 2016	http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
Red Hat Bugzilla
10	Bug 1335803	https://bugzilla.redhat.com/show_bug.cgi?id=1335803
Ubuntu Security Notice
11	USN-3021-1	http://www.ubuntu.com/usn/USN-3021-1
12	USN-3021-2	http://www.ubuntu.com/usn/USN-3021-2

Change Log

No	Changed Details	Date of change
0	[2016年05月26日] 掲載 [2016年10月27日] 影響を受けるシステム：ベンダ情報の追加に伴い内容を更新ベンダ情報：Canonical (USN-3021-1) を追加ベンダ情報：Canonical (USN-3021-2) を追加ベンダ情報：openSUSE project (Bug 980371) を追加ベンダ情報：openSUSE project (SUSE-SU-2016:1690) を追加ベンダ情報：openSUSE project (SUSE-SU-2016:1937) を追加ベンダ情報：openSUSE project (SUSE-SU-2016:1672) を追加ベンダ情報：オラクル (Oracle Linux Bulletin - July 2016) を追加	Feb. 17, 2018, 10:37 a.m.