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CVE-2020-10711 Detail

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.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
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References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html Mailing List  Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html Mailing List  Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10711 Issue Tracking  Patch  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html Third Party Advisory 
https://security.netapp.com/advisory/ntap-20200608-0001/ Third Party Advisory 
https://usn.ubuntu.com/4411-1/ Third Party Advisory 
https://usn.ubuntu.com/4412-1/ Third Party Advisory 
https://usn.ubuntu.com/4413-1/ Third Party Advisory 
https://usn.ubuntu.com/4414-1/ Third Party Advisory 
https://usn.ubuntu.com/4419-1/ Third Party Advisory 
https://www.debian.org/security/2020/dsa-4698 Third Party Advisory 
https://www.debian.org/security/2020/dsa-4699 Third Party Advisory 
https://www.openwall.com/lists/oss-security/2020/05/12/2 Mailing List  Patch  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-476 NULL Pointer Dereference cwe source acceptance level NIST   Red Hat, Inc.  

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Change History

16 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-10711
NVD Published Date:
05/22/2020
NVD Last Modified:
11/06/2023
Source:
Red Hat, Inc.