CVE-2021-35039

CVSS V2 Medium 6.9 CVSS V3 High 7.8
Description
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.
Overview
  • CVE ID
  • CVE-2021-35039
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Undergoing Analysis
  • Published Version
  • 2021-07-07T01:15:07
  • Last Modified Date
  • 2021-12-06T17:03:19
Weakness Enumerations
CWE URL
CWE-347 http://cwe.mitre.org/data/definitions/347.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 1 OR 4.15 5.12.14
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:M/Au:N/C:C/I:C/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 6.9
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.4
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
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
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-35039
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35039
History
Created Old Value New Value Data Type Notes
2022-05-10 06:42:57 Added to TrackCVE
2022-12-05 05:27:44 2021-07-07T01:15Z 2021-07-07T01:15:07 CVE Published Date updated
2022-12-05 05:27:44 2021-12-06T17:03:19 CVE Modified Date updated
2022-12-05 05:27:44 Analyzed Vulnerability Status updated
2023-04-18 19:04:57 Analyzed Undergoing Analysis Vulnerability Status updated