NVD Vulnerability Detail

CVE-2019-19602

Summary	fpregs_state_valid in arch/x86/include/asm/fpu/internal.h in the Linux kernel before 5.4.2, when GCC 9 is used, allows context-dependent attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact because of incorrect fpu_fpregs_owner_ctx caching, as demonstrated by mishandling of signal-based non-cooperative preemption in Go 1.14 prereleases on amd64, aka CID-59c4bd853abc.
Publication Date	Dec. 5, 2019, 11:15 p.m.
Registration Date	Jan. 26, 2021, 11:41 a.m.
Last Update	Nov. 21, 2024, 1:35 p.m.

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:o:linux:linux_kernel::::::::					5.4.2

Configuration2	or higher	or less	more than	less than
cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
cpe:2.3:o:canonical:ubuntu_linux:19.10:::::::*

Related information, measures and tools

No	URL	タグ
1	https://bugzilla.kernel.org/show_bug.cgi?id=205663	Issue Tracking Third Party Advisory
2	https://bugzilla.kernel.org/show_bug.cgi?id=205663	Issue Tracking Third Party Advisory
3	https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2	Release Notes Vendor Advisory
4	https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2	Release Notes Vendor Advisory
5	https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=59c4bd853abcea95eccc167a7d7fd5f1a5f47b98	Exploit Vendor Advisory
6	https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=59c4bd853abcea95eccc167a7d7fd5f1a5f47b98	Exploit Vendor Advisory
7	https://github.com/golang/go/issues/35777#issuecomment-561935388	Issue Tracking Third Party Advisory
8	https://github.com/golang/go/issues/35777#issuecomment-561935388	Issue Tracking Third Party Advisory
9	https://github.com/torvalds/linux/commit/59c4bd853abcea95eccc167a7d7fd5f1a5f47b98	Exploit Third Party Advisory
10	https://github.com/torvalds/linux/commit/59c4bd853abcea95eccc167a7d7fd5f1a5f47b98	Exploit Third Party Advisory
11	https://security.netapp.com/advisory/ntap-20200103-0001/	Third Party Advisory
12	https://security.netapp.com/advisory/ntap-20200103-0001/	Third Party Advisory
13	https://usn.ubuntu.com/4284-1/	Third Party Advisory
14	https://usn.ubuntu.com/4284-1/	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

JVN Vulnerability Information

Linux Kernel における重要なリソースに対する不適切なパーミッションの割り当てに関する脆弱性

Title	Linux Kernel における重要なリソースに対する不適切なパーミッションの割り当てに関する脆弱性
Summary	Linux Kernel には、重要なリソースに対する不適切なパーミッションの割り当てに関する脆弱性が存在します。
Possible impacts	情報を取得される、情報を改ざんされる、およびサービス運用妨害 (DoS) 状態に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	Dec. 4, 2019, midnight
Registration Date	Dec. 20, 2019, 11:49 a.m.
Last Update	Dec. 20, 2019, 11:49 a.m.

Affected System

Linux

Linux Kernel 5.4.2 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-2019-19602	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19602
National Vulnerability Database (NVD)
2	CVE-2019-19602	https://nvd.nist.gov/vuln/detail/CVE-2019-19602

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-732	https://cwe.mitre.org/data/definitions/732.html

ベンダー情報

No	Name	URL
ChangeLog
1	ChangeLog-5.4.2	https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2
GitHub
2	x86/fpu: Don't cache access to fpu_fpregs_owner_ctx	https://github.com/torvalds/linux/commit/59c4bd853abcea95eccc167a7d7fd5f1a5f47b98
Kernel.org Bugzilla
3	Bug 205663	https://bugzilla.kernel.org/show_bug.cgi?id=205663
Linux Kernel
4	Linux Kernel Archives	http://www.kernel.org
Linux kernel source tree
5	x86/fpu: Don't cache access to fpu_fpregs_owner_ctx	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=59c4bd853abcea95eccc167a7d7fd5f1a5f47b98

Change Log

No	Changed Details	Date of change
1	[2019年12月20日] 掲載	Dec. 20, 2019, 11:49 a.m.