Rapid7 Vulnerability & Exploit Database

Red Hat: CVE-2020-10711: Important: kernel security and bug fix update (Multiple Advisories)

Back to Search

Red Hat: CVE-2020-10711: Important: kernel security and bug fix update (Multiple Advisories)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
Published
05/12/2020
Created
05/14/2020
Added
05/13/2020
Modified
03/03/2021

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.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt
  • redhat-upgrade-kpatch-patch-3_10_0-1062
  • redhat-upgrade-kpatch-patch-3_10_0-1062-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1062_12_1
  • redhat-upgrade-kpatch-patch-3_10_0-1062_18_1
  • redhat-upgrade-kpatch-patch-3_10_0-1062_1_1
  • redhat-upgrade-kpatch-patch-3_10_0-1062_1_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1062_1_2
  • redhat-upgrade-kpatch-patch-3_10_0-1062_1_2-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1062_21_1
  • redhat-upgrade-kpatch-patch-3_10_0-1062_21_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1062_4_1
  • redhat-upgrade-kpatch-patch-3_10_0-1062_4_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1062_4_2
  • redhat-upgrade-kpatch-patch-3_10_0-1062_4_3
  • redhat-upgrade-kpatch-patch-3_10_0-1062_7_1
  • redhat-upgrade-kpatch-patch-3_10_0-1062_9_1
  • redhat-upgrade-kpatch-patch-3_10_0-957_35_1
  • redhat-upgrade-kpatch-patch-3_10_0-957_35_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-957_35_2
  • redhat-upgrade-kpatch-patch-3_10_0-957_35_2-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-957_38_1
  • redhat-upgrade-kpatch-patch-3_10_0-957_38_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-957_38_2
  • redhat-upgrade-kpatch-patch-3_10_0-957_38_3
  • redhat-upgrade-kpatch-patch-3_10_0-957_41_1
  • redhat-upgrade-kpatch-patch-3_10_0-957_43_1
  • redhat-upgrade-kpatch-patch-3_10_0-957_46_1
  • redhat-upgrade-kpatch-patch-3_10_0-957_48_1
  • redhat-upgrade-kpatch-patch-4_18_0-147
  • redhat-upgrade-kpatch-patch-4_18_0-147-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-147-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-147_0_2
  • redhat-upgrade-kpatch-patch-4_18_0-147_0_2-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-147_0_2-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-147_0_3
  • redhat-upgrade-kpatch-patch-4_18_0-147_3_1
  • redhat-upgrade-kpatch-patch-4_18_0-147_5_1
  • redhat-upgrade-kpatch-patch-4_18_0-147_8_1
  • redhat-upgrade-kpatch-patch-4_18_0-193
  • redhat-upgrade-kpatch-patch-4_18_0-193-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-193-debugsource

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;