CVE-2021-35039

Advisory lineage Upstream: 0 Downstream: 14
Modified
Published: 07 Jul 2021, 00:57
Last modified:04 Aug 2024, 00:33

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.08% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

07 Jul 2021, 00:57
Published
Vulnerability first disclosed
04 Aug 2024, 00:33
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 6.9AV:L/AC:M/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.08%• Percentile: 25%

Techniques & Countermeasures

  • CWE-347•Improper Verification of Cryptographic Signature

    The product does not verify, or incorrectly verifies, the cryptographic signature for data.

Affected Systems

  • debian•debian_linux

    9.0

  • linux•linux_kernel

    ≥ 4.15, < 4.19.196 | ≥ 4.20, < 5.4.129 | ≥ 5.5, < 5.10.47 | ≥ 5.11, < 5.12.14

References (7)