What is CVE-2020-10711?

CVE-2020-10711 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.9 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476). CVE-2020-10711 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2020-10711?

CVE-2020-10711 has a CVSS score of 5.9 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2020-10711?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2020-10711 patch availability.

Is CVE-2020-10711 actively exploited?

CVE-2020-10711 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2020-10711

Medium

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.

Package Linux Kernel

Published 2020-05-22

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

5.9

out of 10

Medium

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-476

CVE-2020-10711 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

References

13 total

Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10711

Issue Tracking Patch Third Party Advisory
Openwall
https://www.openwall.com/lists/oss-security/2020/05/12/2

Mailing List Patch Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html

Mailing List Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html

Mailing List Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html

Third Party Advisory

Showing 5 of 13 references View all on NVD

Details

CVE ID CVE-2020-10711

Severity Medium

CVSS score 5.9 / 10

CVSS version 3.1

Published 2020-05-22

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2020-10711?

CVE-2020-10711 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.9 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . CVE-2020-10711 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2020-10711?

CVE-2020-10711 has a CVSS score of 5.9 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2020-10711?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2020-10711 patch availability.
Is CVE-2020-10711 actively exploited?

No. CVE-2020-10711 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.