CVE - CVE-2020-10711

CVE-ID
CVE-2020-10711	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10711 CONFIRM:https://security.netapp.com/advisory/ntap-20200608-0001/ CONFIRM:https://www.openwall.com/lists/oss-security/2020/05/12/2 DEBIAN:DSA-4698 URL:https://www.debian.org/security/2020/dsa-4698 DEBIAN:DSA-4699 URL:https://www.debian.org/security/2020/dsa-4699 MLIST:[debian-lts-announce] 20200610 [SECURITY] [DLA 2242-1] linux-4.9 security update URL:https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html SUSE:openSUSE-SU-2020:0801 URL:http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html SUSE:openSUSE-SU-2020:0935 URL:http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html UBUNTU:USN-4411-1 URL:https://usn.ubuntu.com/4411-1/ UBUNTU:USN-4412-1 URL:https://usn.ubuntu.com/4412-1/ UBUNTU:USN-4413-1 URL:https://usn.ubuntu.com/4413-1/ UBUNTU:USN-4414-1 URL:https://usn.ubuntu.com/4414-1/ UBUNTU:USN-4419-1 URL:https://usn.ubuntu.com/4419-1/
Assigning CNA
Red Hat, Inc.
Date Record Created
20200320	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20200320)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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