CVE-2020-10711
Published: 12 May 2020
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.
From the Ubuntu security team
Matthew Sheets discovered that the SELinux network label handling implementation in the Linux kernel could be coerced into de-referencing a NULL pointer. A remote attacker could use this to cause a denial of service (system crash).
CVSS 3 base score: 5.9
Status
Package | Release | Status |
---|---|---|
linux Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-109.110)
|
eoan |
Released
(5.3.0-62.56)
|
|
focal |
Released
(5.4.0-40.44)
|
|
precise |
Not vulnerable
(3.0.0-12.20)
|
|
trusty |
Ignored
(was needed ESM criteria)
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Released
(4.4.0-185.215)
|
|
linux-aws Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1077.81)
|
eoan |
Released
(5.3.0-1030.32)
|
|
focal |
Released
(5.4.0-1018.18)
|
|
precise |
Does not exist
|
|
trusty |
Released
(4.4.0-1074.78)
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Released
(4.4.0-1110.121)
|
|
linux-aws-5.0 Launchpad, Ubuntu, Debian |
bionic |
Ignored
(was needs-triage now end-of-life)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-aws-5.3 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-1030.32~18.04.1)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-aws-5.4 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4.0-1018.18~18.04.1)
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-aws-hwe Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Released
(4.15.0-1074.78~16.04.1)
|
|
linux-azure Launchpad, Ubuntu, Debian |
bionic |
Ignored
(was needs-triage now end-of-life)
|
eoan |
Released
(5.3.0-1032.33)
|
|
focal |
Released
(5.4.0-1020.20)
|
|
precise |
Does not exist
|
|
trusty |
Released
(4.15.0-1091.101~14.04.1)
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Released
(4.15.0-1091.101~16.04.1)
|
|
linux-azure-4.15 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1091.101)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-azure-5.3 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-1032.33~18.04.1)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-azure-5.4 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4.0-1020.20~18.04.1)
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-azure-edge Launchpad, Ubuntu, Debian |
bionic |
Ignored
(was needs-triage now end-of-life)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-gcp Launchpad, Ubuntu, Debian |
bionic |
Ignored
(was needs-triage now end-of-life)
|
eoan |
Released
(5.3.0-1030.32)
|
|
focal |
Released
(5.4.0-1019.19)
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Released
(4.15.0-1078.88~16.04.1)
|
|
linux-gcp-4.15 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1078.88)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-gcp-5.3 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-1030.32~18.04.1)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-gcp-5.4 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4.0-1019.19~18.04.2)
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-gcp-edge Launchpad, Ubuntu, Debian |
bionic |
Ignored
(was needs-triage now end-of-life)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-gke-4.15 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1064.67)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-gke-5.0 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1043.44)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-gke-5.3 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-1030.32~18.04.1)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-hwe Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-62.56~18.04.1)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Released
(4.15.0-107.108~16.04.1)
|
|
linux-hwe-5.4 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.4.0-40.44~18.04.1)
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
bionic |
Ignored
(was needs-triage now end-of-life)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Ignored
(was needs-triage now end-of-life)
|
|
linux-kvm Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1069.70)
|
eoan |
Released
(5.3.0-1024.26)
|
|
focal |
Released
(5.4.0-1018.18)
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Released
(4.4.0-1076.83)
|
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Ignored
(was needed ESM criteria)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Released
(4.4.0-185.215~14.04.1)
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-oem Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1091.101)
|
eoan |
Ignored
(reached end-of-life)
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Ignored
(was needs-triage now end-of-life)
|
|
linux-oem-5.6 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
eoan |
Does not exist
|
|
focal |
Released
(5.6.0-1011.11)
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-oem-osp1 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1063.68)
|
eoan |
Ignored
(reached end-of-life)
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-oracle Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1048.52)
|
eoan |
Released
(5.3.0-1028.30)
|
|
focal |
Released
(5.4.0-1019.19)
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Released
(4.15.0-1046.50~16.04.1)
|
|
linux-oracle-5.0 Launchpad, Ubuntu, Debian |
bionic |
Ignored
(was needs-triage now end-of-life)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-oracle-5.3 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-1028.30~18.04.1)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-oracle-5.4 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4.0-1019.19~18.04.1)
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-raspi Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
eoan |
Does not exist
|
|
focal |
Released
(5.4.0-1013.13)
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-raspi-5.4 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.4.0-1013.13~18.04.1)
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1065.69)
|
eoan |
Released
(5.3.0-1028.30)
|
|
focal |
Ignored
(was needs-triage now end-of-life)
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Released
(4.4.0-1135.144)
|
|
linux-raspi2-5.3 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-1028.30~18.04.2)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-riscv Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
eoan |
Does not exist
|
|
focal |
Released
(5.4.0-28.32)
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Does not exist
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1081.88)
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(5.7~rc6)
|
|
xenial |
Released
(4.4.0-1139.147)
|
Notes
Author | Note |
---|---|
sbeattie | SELinux is not the default MAC used in Ubuntu |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10711
- https://www.openwall.com/lists/oss-security/2020/05/12/2
- https://lore.kernel.org/netdev/07d99ae197bfdb2964931201db67b6cd0b38db5b.1589276729.git.pabeni@redhat.com/T/#u
- https://ubuntu.com/security/notices/USN-4411-1
- https://ubuntu.com/security/notices/USN-4412-1
- https://ubuntu.com/security/notices/USN-4413-1
- https://ubuntu.com/security/notices/USN-4414-1
- https://ubuntu.com/security/notices/USN-4419-1
- NVD
- Launchpad
- Debian