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JVN脆弱性詳細

Linux Kernel の virt/kvm/iommu.c 内の kvm_iommu_map_pages 関数におけるサービス運用妨害 (DoS) の脆弱性

Title	Linux Kernel の virt/kvm/iommu.c 内の kvm_iommu_map_pages 関数におけるサービス運用妨害 (DoS) の脆弱性
Summary	Linux Kernel の virt/kvm/iommu.c 内の kvm_iommu_map_pages 関数には、マッピングの失敗を処理している間、ページ数を誤って計算するため、サービス運用妨害 (ホスト OS ページのピンニング解除) 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。本脆弱性は CVE-2014-3601 の修正が不完全だったことによる脆弱性です。
Possible impacts	ゲスト OS ユーザにより、ゲスト OS の権限を利用されることで、サービス運用妨害 (ホスト OS ページのピンニング解除) 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	Oct. 24, 2014, midnight
Registration Date	Nov. 11, 2014, 6 p.m.
Last Update	June 8, 2015, 5:20 p.m.

CVSS2.0 : 警告
Score	4.6
Vector	AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected System

Linux

Linux Kernel 3.17.2 まで

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-2014-8369	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8369
National Vulnerability Database (NVD)
2	CVE-2014-8369	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-8369

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-189	https://jvndb.jvn.jp/ja/cwe/CWE-189.html

ベンダー情報

No	Name	URL
GitHub
1	kvm: fix excessive pages un-pinning in kvm_iommu_map error path.	https://github.com/torvalds/linux/commit/3d32e4dbe71374a6780eaf51d719d76f9a9bf22f
Linux Kernel
2	Linux Kernel Archives	http://www.kernel.org
Linux kernel source tree
3	kvm: fix excessive pages un-pinning in kvm_iommu_map error path.	http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3d32e4dbe71374a6780eaf51d719d76f9a9bf22f
Red Hat Bugzilla
4	Bug 1156518	https://bugzilla.redhat.com/show_bug.cgi?id=1156518
Red Hat Security Advisory
5	RHSA-2015:0674	http://rhn.redhat.com/errata/RHSA-2015-0674.html

Change Log

No	Changed Details	Date of change
0	[2014年11月11日] 掲載 [2015年06月08日] ベンダ情報：レッドハット (RHSA-2015:0674) を追加	Feb. 17, 2018, 10:37 a.m.

NVD Vulnerability Information

CVE-2014-8369

Summary	The kvm_iommu_map_pages function in virt/kvm/iommu.c in the Linux kernel through 3.17.2 miscalculates the number of pages during the handling of a mapping failure, which allows guest OS users to cause a denial of service (host OS page unpinning) or possibly have unspecified other impact by leveraging guest OS privileges. NOTE: this vulnerability exists because of an incorrect fix for CVE-2014-3601.
Publication Date	Nov. 10, 2014, 8:55 p.m.
Registration Date	Jan. 26, 2021, 3:20 p.m.
Last Update	Nov. 21, 2024, 11:18 a.m.

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:o:linux:linux_kernel::::::::			3.17.2

Configuration2		or higher	or less	more than	less than
cpe:2.3:o:debian:debian_linux:7.0:::::::*

Configuration3	or higher	or less	more than	less than
cpe:2.3:o:opensuse:evergreen:11.4:::::::*
cpe:2.3:o:suse:linux_enterprise_real_time_extension:11:sp3::::::
cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp2:::ltss:::*

Related information, measures and tools

No	URL	タグ
1	http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3d32e4dbe71374a6780eaf51d719d76f9a9bf22f
2	http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3d32e4dbe71374a6780eaf51d719d76f9a9bf22f
3	http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html	Mailing List Third Party Advisory
4	http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html	Mailing List Third Party Advisory
5	http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html	Mailing List Third Party Advisory
6	http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html	Mailing List Third Party Advisory
7	http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html	Mailing List Third Party Advisory
8	http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html	Mailing List Third Party Advisory
9	http://rhn.redhat.com/errata/RHSA-2015-0674.html	Third Party Advisory
10	http://rhn.redhat.com/errata/RHSA-2015-0674.html	Third Party Advisory
11	http://secunia.com/advisories/62326	Broken Link
12	http://secunia.com/advisories/62326	Broken Link
13	http://secunia.com/advisories/62336	Broken Link
14	http://secunia.com/advisories/62336	Broken Link
15	http://www.debian.org/security/2014/dsa-3093	Third Party Advisory
16	http://www.debian.org/security/2014/dsa-3093	Third Party Advisory
17	http://www.openwall.com/lists/oss-security/2014/10/24/7	Mailing List Patch Third Party Advisory
18	http://www.openwall.com/lists/oss-security/2014/10/24/7	Mailing List Patch Third Party Advisory
19	http://www.securityfocus.com/bid/70747	Third Party Advisory VDB Entry
20	http://www.securityfocus.com/bid/70747	Third Party Advisory VDB Entry
21	http://www.securityfocus.com/bid/70749	Third Party Advisory VDB Entry
22	http://www.securityfocus.com/bid/70749	Third Party Advisory VDB Entry
23	https://bugzilla.redhat.com/show_bug.cgi?id=1156518	Issue Tracking Patch Third Party Advisory
24	https://bugzilla.redhat.com/show_bug.cgi?id=1156518	Issue Tracking Patch Third Party Advisory
25	https://github.com/torvalds/linux/commit/3d32e4dbe71374a6780eaf51d719d76f9a9bf22f	Exploit Patch Third Party Advisory
26	https://github.com/torvalds/linux/commit/3d32e4dbe71374a6780eaf51d719d76f9a9bf22f	Exploit Patch Third Party Advisory
27	https://lkml.org/lkml/2014/10/24/460	Exploit Mailing List Patch Third Party Advisory
28	https://lkml.org/lkml/2014/10/24/460	Exploit Mailing List Patch Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-119	バッファエラー	https://cwe.mitre.org/data/definitions/118.html