CVE-2020-10711
Current Description
A NULL pointer dereference flaw was found in the Linux kernel's SELinux subsystem in versions before 5.7. This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. While processing the CIPSO restricted bitmap tag in the 'cipso_v4_parsetag_rbm' routine, it sets the security attribute to indicate that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network user to crash the system kernel, resulting in a denial of service.
Basic Data
Published | May 22, 2020 |
---|---|
Last Modified | July 29, 2020 |
Assigner | cve@mitre.org |
Data Type | CVE |
Data Format | MITRE |
Data Version | 4.0 |
Problem Type | CWE-476 |
CVE Data Version | 4.0 |
Base Metric V2
CVSS 2 - Version | 2.0 |
---|---|
CVSS 2 - Vector String | AV:N/AC:M/Au:N/C:N/I:N/A:P |
CVSS 2 - Access Vector | NETWORK |
CVSS 2 - Access Complexity | MEDIUM |
CVSS 2 - Authentication | NONE |
CVSS 2 - Confidentiality Impact | NONE |
CVSS 2 - Availability Impact | PARTIAL |
CVSS 2 - Base Score | 4.3 |
Severity | MEDIUM |
Exploitability Score | 8.6 |
Impact Score | 2.9 |
Obtain All Privilege | false |
Obtain User Privilege | false |
Obtain Other Privilege | false |
Base Metric V3
No data provided.
Configurations
-
OR - Configuration 1
Cpe Version Part Vendor Product Version Update Edition Language SW Edition Target SW Target HW Other Version Start Including Version End Including Version Start Excluding Version End Excluding 2.3 OS Linux Linux Kernel * * * * * * * *