NVD Vulnerability Detail

CVE-2015-2666

Summary	Stack-based buffer overflow in the get_matching_model_microcode function in arch/x86/kernel/cpu/microcode/intel_early.c in the Linux kernel before 4.0 allows context-dependent attackers to gain privileges by constructing a crafted microcode header and leveraging root privileges for write access to the initrd.
Publication Date	May 27, 2015, 7:59 p.m.
Registration Date	Jan. 26, 2021, 2:48 p.m.
Last Update	Nov. 21, 2024, 11:27 a.m.

Affected software configurations

Configuration2		or higher	or less	more than	less than
cpe:2.3:o:fedoraproject:fedora:21:::::::*

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=f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4	Broken Link
2	http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4	Broken Link
3	http://lists.fedoraproject.org/pipermail/package-announce/2015-March/153329.html	Third Party Advisory
4	http://lists.fedoraproject.org/pipermail/package-announce/2015-March/153329.html	Third Party Advisory
5	http://rhn.redhat.com/errata/RHSA-2015-1534.html	Third Party Advisory
6	http://rhn.redhat.com/errata/RHSA-2015-1534.html	Third Party Advisory
7	http://www.openwall.com/lists/oss-security/2015/03/20/18	Mailing List
8	http://www.openwall.com/lists/oss-security/2015/03/20/18	Mailing List
9	http://www.securitytracker.com/id/1032414	Third Party Advisory VDB Entry
10	http://www.securitytracker.com/id/1032414	Third Party Advisory VDB Entry
11	https://bugzilla.redhat.com/show_bug.cgi?id=1204722	Issue Tracking
12	https://bugzilla.redhat.com/show_bug.cgi?id=1204722	Issue Tracking
13	https://github.com/torvalds/linux/commit/f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4	Patch
14	https://github.com/torvalds/linux/commit/f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4	Patch

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

JVN Vulnerability Information

Linux Kernel の arch/x86/kernel/cpu/microcode/intel_early.c 内の get_matching_model_microcode 関数におけるスタックベースのバッファオーバーフローの脆弱性

Title	Linux Kernel の arch/x86/kernel/cpu/microcode/intel_early.c 内の get_matching_model_microcode 関数におけるスタックベースのバッファオーバーフローの脆弱性
Summary	Linux Kernel の arch/x86/kernel/cpu/microcode/intel_early.c 内の get_matching_model_microcode 関数には、スタックベースのバッファオーバーフローの脆弱性が存在します。
Possible impacts	攻撃者により、巧妙に細工されたマイクロコードのヘッダを構成される、および initrd への書き込みアクセスに root 権限を利用されることで、権限を取得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. 19, 2015, midnight
Registration Date	May 29, 2015, 4:20 p.m.
Last Update	May 29, 2015, 4:20 p.m.

Affected System

Linux

Linux Kernel 4.0 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-2015-2666	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2666
National Vulnerability Database (NVD)
2	CVE-2015-2666	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2666

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-119	https://jvndb.jvn.jp/ja/cwe/CWE-119.html

ベンダー情報

No	Name	URL
GitHub
1	x86/microcode/intel: Guard against stack overflow in the loader	https://github.com/torvalds/linux/commit/f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4
Linux Kernel
2	Linux Kernel Archives	http://www.kernel.org
Linux kernel source tree
3	x86/microcode/intel: Guard against stack overflow in the loader	http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4
Red Hat Bugzilla
4	Bug 1204722	https://bugzilla.redhat.com/show_bug.cgi?id=1204722

Change Log

No	Changed Details	Date of change
0	[2015年05月29日] 掲載	Feb. 17, 2018, 10:37 a.m.