CVE-2021-35039

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.

CVSS v3.0 7.8 HIGH
CVSS v2.0 6.9 MEDIUM

7.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.9^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:M/Au:N/C:C/I:C/A:C

Exploitability : 3.4 / Impact : 10.0

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://www.openwall.com/lists/oss-security/2021/07/06/3	Mailing List Third Party Advisory
https://github.com/torvalds/linux/commit/0c18f29aae7ce3dadd26d8ee3505d07cc982df75	Patch Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.14	Mailing List Patch Vendor Advisory
http://www.openwall.com/lists/oss-security/2021/07/06/3	Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20210813-0004/	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html	Mailing List Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c18f29aae7ce3dadd26d8ee3505d07cc982df75	Mailing List Patch Vendor Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Information

Published : 2021-07-06 18:15

Updated : 2021-12-06 09:03

NVD link : CVE-2021-35039

Mitre link : CVE-2021-35039

JSON object : View

CWE

CWE-347

Improper Verification of Cryptographic Signature

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Products Affected

debian

debian_linux

linux

linux_kernel

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