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JVN脆弱性詳細

Linux Kernel の net/packet/af_packet.c におけるサービス運用妨害 (DoS) の脆弱性

Title	Linux Kernel の net/packet/af_packet.c におけるサービス運用妨害 (DoS) の脆弱性
Summary	Linux Kernel の net/packet/af_packet.c には、競合状態により、サービス運用妨害 (解放済みメモリの使用 (use-after-free)) 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。
Possible impacts	ローカルユーザにより、PACKET_FANOUT setsockopt システムコールを生成するマルチスレッドアプリケーションを介して、サービス運用妨害 (解放済みメモリの使用 (use-after-free)) 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	Feb. 26, 2017, midnight
Registration Date	March 16, 2017, 6:21 p.m.
Last Update	March 16, 2017, 6:21 p.m.

Affected System

Linux

Linux Kernel 4.9.13 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-2017-6346	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-6346
National Vulnerability Database (NVD)
2	CVE-2017-6346	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-6346

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-362	https://jvndb.jvn.jp/ja/cwe/CWE-362.html
2	CWE-416	https://cwe.mitre.org/data/definitions/416.html

ベンダー情報

No	Name	URL
ChangeLog
1	ChangeLog-4.9.13	https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.13
GitHub
2	packet: fix races in fanout_add()	https://github.com/torvalds/linux/commit/d199fab63c11998a602205f7ee7ff7c05c97164b
Linux Kernel
3	Linux Kernel Archives	http://www.kernel.org
Linux kernel source tree
4	packet: fix races in fanout_add()	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d199fab63c11998a602205f7ee7ff7c05c97164b

Change Log

No	Changed Details	Date of change
0	[2017年03月16日] 掲載	Feb. 17, 2018, 10:37 a.m.

NVD Vulnerability Information

CVE-2017-6346

Summary	Race condition in net/packet/af_packet.c in the Linux kernel before 4.9.13 allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a multithreaded application that makes PACKET_FANOUT setsockopt system calls.
Publication Date	March 2, 2017, 5:59 a.m.
Registration Date	Jan. 26, 2021, 1:27 p.m.
Last Update	Nov. 21, 2024, 12:29 p.m.

Affected software configurations

Related information, measures and tools

No	URL	タグ
1	http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d199fab63c11998a602205f7ee7ff7c05c97164b	Patch Vendor Advisory
2	http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d199fab63c11998a602205f7ee7ff7c05c97164b	Patch Vendor Advisory
3	http://www.debian.org/security/2017/dsa-3804	Third Party Advisory
4	http://www.debian.org/security/2017/dsa-3804	Third Party Advisory
5	http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.13	Patch Release Notes Vendor Advisory
6	http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.13	Patch Release Notes Vendor Advisory
7	http://www.openwall.com/lists/oss-security/2017/02/28/6	Mailing List Patch Third Party Advisory
8	http://www.openwall.com/lists/oss-security/2017/02/28/6	Mailing List Patch Third Party Advisory
9	http://www.securityfocus.com/bid/96508	Third Party Advisory VDB Entry
10	http://www.securityfocus.com/bid/96508	Third Party Advisory VDB Entry
11	https://github.com/torvalds/linux/commit/d199fab63c11998a602205f7ee7ff7c05c97164b	Patch Vendor Advisory
12	https://github.com/torvalds/linux/commit/d199fab63c11998a602205f7ee7ff7c05c97164b	Patch Vendor Advisory
13	https://source.android.com/security/bulletin/2017-09-01	Third Party Advisory
14	https://source.android.com/security/bulletin/2017-09-01	Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-362	競合状態	https://cwe.mitre.org/data/definitions/362.html
2	CWE-416	解放済みメモリの使用	https://cwe.mitre.org/data/definitions/416.html