CVE-2019-9213

MEDIUM

Description

In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0a1d52994d440e21def1c2174932410b4f2a98a1

http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00045.html

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00052.html

http://www.securityfocus.com/bid/107296

https://access.redhat.com/errata/RHSA-2019:0831

https://access.redhat.com/errata/RHSA-2019:1479

https://access.redhat.com/errata/RHSA-2019:1480

https://bugs.chromium.org/p/project-zero/issues/detail?id=1792

https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.105

https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.27

https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.14

https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.162

https://github.com/torvalds/linux/commit/0a1d52994d440e21def1c2174932410b4f2a98a1

https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html

https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html

https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html

https://usn.ubuntu.com/3930-1/

https://usn.ubuntu.com/3930-2/

https://usn.ubuntu.com/3931-1/

https://usn.ubuntu.com/3931-2/

https://usn.ubuntu.com/3932-1/

https://usn.ubuntu.com/3932-2/

https://usn.ubuntu.com/3933-1/

https://usn.ubuntu.com/3933-2/

https://www.exploit-db.com/exploits/46502/

Details

Source: MITRE

Published: 2019-03-05

Updated: 2019-06-17

Type: CWE-476

Risk Information

CVSS v2.0

Base Score: 4.9

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3.0

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Tenable Plugins

View all (41 total)

IDNameProductFamilySeverity
145651CentOS 8 : kernel (CESA-2019:1479)NessusCentOS Local Security Checks
high
127590Oracle Linux 8 : kernel (ELSA-2019-1479) (SACK Panic) (SACK Slowness)NessusOracle Linux Local Security Checks
high
126031Slackware 14.2 / current : kernel (SSA:2019-169-01) (SACK Panic) (SACK Slowness)NessusSlackware Local Security Checks
high
125968RHEL 8 : kernel-rt (RHSA-2019:1480) (SACK Panic) (SACK Slowness)NessusRed Hat Local Security Checks
high
125967RHEL 8 : kernel (RHSA-2019:1479) (SACK Panic) (SACK Slowness)NessusRed Hat Local Security Checks
high
125588EulerOS Virtualization for ARM 64 3.0.2.0 : kernel (EulerOS-SA-2019-1636)NessusHuawei Local Security Checks
high
125514EulerOS 2.0 SP3 : kernel (EulerOS-SA-2019-1587)NessusHuawei Local Security Checks
high
125283SUSE SLES12 Security Update : kernel (SUSE-SU-2019:1289-1) (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout)NessusSuSE Local Security Checks
high
125250SUSE SLES11 Security Update : kernel (SUSE-SU-2019:14051-1) (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout)NessusSuSE Local Security Checks
high
124834EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1512)NessusHuawei Local Security Checks
high
124595Debian DLA-1771-1 : linux-4.9 security updateNessusDebian Local Security Checks
high
124398EulerOS 2.0 SP2 : kernel (EulerOS-SA-2019-1302)NessusHuawei Local Security Checks
high
124257RHEL 7 : kernel-alt (RHSA-2019:0831)NessusRed Hat Local Security Checks
medium
124050openSUSE Security Update : the Linux Kernel (openSUSE-2019-1193)NessusSuSE Local Security Checks
high
124048Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2019-4612)NessusOracle Linux Local Security Checks
high
123927SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0901-1)NessusSuSE Local Security Checks
high
123727EulerOS Virtualization 2.5.3 : kernel (EulerOS-SA-2019-1259)NessusHuawei Local Security Checks
high
123682Ubuntu 14.04 LTS : linux vulnerabilities (USN-3933-1)NessusUbuntu Local Security Checks
medium
123681Ubuntu 14.04 LTS : linux-lts-xenial, linux-aws vulnerabilities (USN-3932-2)NessusUbuntu Local Security Checks
high
123680Ubuntu 16.04 LTS : linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities (USN-3932-1)NessusUbuntu Local Security Checks
high
123679Ubuntu 14.04 LTS / 16.04 LTS : linux-hwe, linux-aws-hwe, linux-azure, linux-gcp, linux-oracle (USN-3931-2)NessusUbuntu Local Security Checks
high
123678Ubuntu 18.04 LTS : linux, linux-aws, linux-gcp, linux-kvm, linux-oem, linux-oracle, (USN-3931-1)NessusUbuntu Local Security Checks
high
123677Ubuntu 18.04 LTS : linux-hwe, linux-azure vulnerabilities (USN-3930-2)NessusUbuntu Local Security Checks
high
123676Ubuntu 18.10 : linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-raspi2 (USN-3930-1)NessusUbuntu Local Security Checks
high
123635SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0828-1)NessusSuSE Local Security Checks
high
123630EulerOS 2.0 SP5 : kernel (EulerOS-SA-2019-1156)NessusHuawei Local Security Checks
high
123546SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2019:0801-1)NessusSuSE Local Security Checks
high
123545openSUSE Security Update : the Linux Kernel (openSUSE-2019-1085)NessusSuSE Local Security Checks
high
123496SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2019:0784-1)NessusSuSE Local Security Checks
high
123466Amazon Linux 2 : kernel (ALAS-2019-1179)NessusAmazon Linux Local Security Checks
high
123445SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0767-1)NessusSuSE Local Security Checks
high
123420Debian DLA-1731-2 : linux regression update (Spectre)NessusDebian Local Security Checks
high
123413SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2019:0765-1) (Spectre)NessusSuSE Local Security Checks
high
123125SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0722-1)NessusSuSE Local Security Checks
medium
123087Amazon Linux AMI : kernel (ALAS-2019-1179)NessusAmazon Linux Local Security Checks
high
123066SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0709-1)NessusSuSE Local Security Checks
medium
123061SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0683-1)NessusSuSE Local Security Checks
medium
123000SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0672-1)NessusSuSE Local Security Checks
medium
122969SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0645-1)NessusSuSE Local Security Checks
medium
122769Fedora 28 : kernel / kernel-headers (2019-196ab64d65)NessusFedora Local Security Checks
medium
122726Fedora 29 : kernel / kernel-headers (2019-87e7046631)NessusFedora Local Security Checks
medium