NVD Vulnerability Detail

CVE-2016-7912

Summary	Use-after-free vulnerability in the ffs_user_copy_worker function in drivers/usb/gadget/function/f_fs.c in the Linux kernel before 4.5.3 allows local users to gain privileges by accessing an I/O data structure after a certain callback call.
Publication Date	Nov. 16, 2016, 2:59 p.m.
Registration Date	Jan. 26, 2021, 2:17 p.m.
Last Update	Nov. 21, 2024, 11:58 a.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=38740a5b87d53ceb89eb2c970150f6e94e00373a	Issue Tracking Patch Third Party Advisory
2	http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=38740a5b87d53ceb89eb2c970150f6e94e00373a	Issue Tracking Patch Third Party Advisory
3	http://source.android.com/security/bulletin/2016-11-01.html	Third Party Advisory
4	http://source.android.com/security/bulletin/2016-11-01.html	Third Party Advisory
5	http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.3	Release Notes Vendor Advisory
6	http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.3	Release Notes Vendor Advisory
7	http://www.securityfocus.com/bid/94197	Third Party Advisory VDB Entry
8	http://www.securityfocus.com/bid/94197	Third Party Advisory VDB Entry
9	https://github.com/torvalds/linux/commit/38740a5b87d53ceb89eb2c970150f6e94e00373a	Issue Tracking Patch Third Party Advisory
10	https://github.com/torvalds/linux/commit/38740a5b87d53ceb89eb2c970150f6e94e00373a	Issue Tracking 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/usb/gadget/function/f_fs.c の ffs_user_copy_worker 関数における権限を取得される脆弱性

Title	Linux Kernel の drivers/usb/gadget/function/f_fs.c の ffs_user_copy_worker 関数における権限を取得される脆弱性
Summary	Linux Kernel の drivers/usb/gadget/function/f_fs.c の ffs_user_copy_worker 関数には、解放済みメモリの使用 (Use-after-free) により、権限を取得され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。 https://cwe.mitre.org/data/definitions/416.html
Possible impacts	ローカルユーザにより、特定のコールバックの呼び出しの後に I/O データ構造にアクセスされることで、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	May 4, 2016, midnight
Registration Date	Nov. 17, 2016, 2:31 p.m.
Last Update	Nov. 17, 2016, 2:31 p.m.

Affected System

Linux

Linux Kernel 4.5.3 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-2016-7912	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7912
National Vulnerability Database (NVD)
2	CVE-2016-7912	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-7912

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
Android Open Source Project
1	Android Security Bulletin-November 2016	http://source.android.com/security/bulletin/2016-11-01.html
ChangeLog
2	ChangeLog-4.5.3	https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.3
GitHub
3	usb: gadget: f_fs: Fix use-after-free	https://github.com/torvalds/linux/commit/38740a5b87d53ceb89eb2c970150f6e94e00373a
Linux Kernel
4	Linux Kernel Archives	http://www.kernel.org
Linux kernel source tree
5	usb: gadget: f_fs: Fix use-after-free	http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=38740a5b87d53ceb89eb2c970150f6e94e00373a

Change Log

No	Changed Details	Date of change
0	[2016年11月17日] 掲載	Feb. 17, 2018, 10:37 a.m.