Ubuntu.comUB:CVE-2021-35039CVE-2021-35039
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
14.5%
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.
Notes
| Author | Note |
|---|---|
| sbeattie | CONFIG_MODULE_SIG has been enabled in Ubuntu kernels at least as early as Ubuntu 14.04 LTS, so should not be affected. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 20.04 | noarch | linux-aws-5.11 | < 5.11.0-1017.18~20.04.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-azure-5.11 | < 5.11.0-1015.16~20.04.1 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-azure-fde | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-gcp-5.11 | < 5.11.0-1018.20~20.04.2 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-gkeop | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-ibm | < 5.4.0-1004.5 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-oracle-5.11 | < 5.11.0-1017.18~20.04.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-gkeop-5.15 | < any | UNKNOWN |
Related
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
14.5%