NVD Vulnerability Detail

CVE-2021-35039

Summary	kernel/module.c in the Linux kernel before 5.12.14 mishandles Signature Verification, aka CID-0c18f29aae7c. Without CONFIG_MODULE_SIG, verification that a kernel module is signed, for loading via init_module, does not occur for a module.sig_enforce=1 command-line argument.
Publication Date	July 7, 2021, 10:15 a.m.
Registration Date	July 7, 2021, 4 p.m.
Last Update	Nov. 21, 2024, 3:11 p.m.

Affected software configurations

Configuration2		or higher	or less	more than	less than
cpe:2.3:o:debian:debian_linux:9.0:::::::*

Related information, measures and tools

No	URL	タグ
1	http://www.openwall.com/lists/oss-security/2021/07/06/3	Mailing List Third Party Advisory
2	http://www.openwall.com/lists/oss-security/2021/07/06/3	Mailing List Third Party Advisory
3	https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.14	Mailing List Patch Vendor Advisory
4	https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.14	Mailing List Patch Vendor Advisory
5	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c18f29aae7ce3dadd26d8ee3505d07cc982df75	Mailing List Patch Vendor Advisory
6	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c18f29aae7ce3dadd26d8ee3505d07cc982df75	Mailing List Patch Vendor Advisory
7	https://github.com/torvalds/linux/commit/0c18f29aae7ce3dadd26d8ee3505d07cc982df75	Patch Third Party Advisory
8	https://github.com/torvalds/linux/commit/0c18f29aae7ce3dadd26d8ee3505d07cc982df75	Patch Third Party Advisory
9	https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html	Mailing List Third Party Advisory
10	https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html	Mailing List Third Party Advisory
11	https://security.netapp.com/advisory/ntap-20210813-0004/	Third Party Advisory
12	https://security.netapp.com/advisory/ntap-20210813-0004/	Third Party Advisory
13	https://www.openwall.com/lists/oss-security/2021/07/06/3	Mailing List Third Party Advisory
14	https://www.openwall.com/lists/oss-security/2021/07/06/3	Mailing List Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-347	デジタル署名の不適切な検証	https://cwe.mitre.org/data/definitions/347.html

JVN Vulnerability Information

Linux Kernel におけるデジタル署名の検証に関する脆弱性

Title	Linux Kernel におけるデジタル署名の検証に関する脆弱性
Summary	Linux Kernel には、デジタル署名の検証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	Jan. 22, 2021, midnight
Registration Date	June 13, 2022, 4:39 p.m.
Last Update	June 13, 2022, 4:39 p.m.

Affected System

Debian

Debian GNU/Linux

Linux

Linux Kernel 5.12.14 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-2021-35039	https://www.cve.org/CVERecord?id=CVE-2021-35039
National Vulnerability Database (NVD)
2	CVE-2021-35039	https://nvd.nist.gov/vuln/detail/CVE-2021-35039
関連文書
3	CVE-2021-35039: Linux kernel loading unsigned kernel modules via init_module syscall	https://www.openwall.com/lists/oss-security/2021/07/06/3

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-347	https://cwe.mitre.org/data/definitions/347.html

ベンダー情報

No	Name	URL
ChangeLog
1	ChangeLog-5.12.14	https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.14
Debian
2	[SECURITY] [DLA 2785-1] linux-4.19 security update	https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
GitHub
3	module: limit enabling module.sig_enforce	https://github.com/torvalds/linux/commit/0c18f29aae7ce3dadd26d8ee3505d07cc982df75
Linux Kernel
4	Linux Kernel Archives	http://www.kernel.org
Linux kernel source tree
5	module: limit enabling module.sig_enforce	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c18f29aae7ce3dadd26d8ee3505d07cc982df75

Change Log

No	Changed Details	Date of change
1	[2022年04月15日] 掲載	April 15, 2022, 11:12 a.m.