CVE-2019-20054

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e.

References

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.11

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.6

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=23da9588037ecdd4901db76a5b79a42b529c4ec3

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=89189557b47b35683a27c80ee78aef18248eefb4

https://security.netapp.com/advisory/ntap-20200204-0002/

Details

Source: MITRE

Published: 2019-12-28

Updated: 2020-02-04

Type: CWE-476

Risk Information

CVSS v2

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

Base Score: 5.5

Vector: CVSS:3.1/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

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Tenable Plugins

View all (27 total)

IDNameProductFamilySeverity
145806CentOS 8 : kernel (CESA-2020:4431)NessusCentOS Local Security Checks
medium
142430RHEL 8 : kernel (RHSA-2020:4431)NessusRed Hat Local Security Checks
medium
142382RHEL 8 : kernel-rt (RHSA-2020:4609)NessusRed Hat Local Security Checks
medium
141727Scientific Linux Security Update : kernel on SL7.x x86_64 (20201001)NessusScientific Linux Local Security Checks
high
141619CentOS 7 : kernel (CESA-2020:4060)NessusCentOS Local Security Checks
high
141374OracleVM 3.4 : Unbreakable / etc (OVMSA-2020-0044)NessusOracleVM Local Security Checks
critical
141367Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2020-5879)NessusOracle Linux Local Security Checks
high
141207Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2020-5866)NessusOracle Linux Local Security Checks
critical
141057RHEL 7 : kernel (RHSA-2020:4060)NessusRed Hat Local Security Checks
high
141026RHEL 7 : kernel-rt (RHSA-2020:4062)NessusRed Hat Local Security Checks
high
138272SUSE SLES15 Security Update : kernel (SUSE-SU-2020:1663-1)NessusSuSE Local Security Checks
critical
137516EulerOS 2.0 SP2 : kernel (EulerOS-SA-2020-1674)NessusHuawei Local Security Checks
critical
136782SUSE SLES12 Security Update : kernel (SUSE-SU-2020:1275-1) (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout)NessusSuSE Local Security Checks
critical
136661SUSE SLES12 Security Update : kernel (SUSE-SU-2020:1255-1)NessusSuSE Local Security Checks
critical
135685RHEL 7 : kernel-alt (RHSA-2020:1493)NessusRed Hat Local Security Checks
critical
135614EulerOS Virtualization 3.0.2.2 : kernel (EulerOS-SA-2020-1452)NessusHuawei Local Security Checks
high
135525EulerOS 2.0 SP3 : kernel (EulerOS-SA-2020-1396)NessusHuawei Local Security Checks
critical
134559openSUSE Security Update : the Linux Kernel (openSUSE-2020-336)NessusSuSE Local Security Checks
critical
134363SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:0613-1)NessusSuSE Local Security Checks
critical
134293SUSE SLES12 Security Update : kernel (SUSE-SU-2020:0584-1)NessusSuSE Local Security Checks
critical
134292SUSE SLES12 Security Update : kernel (SUSE-SU-2020:0580-1)NessusSuSE Local Security Checks
critical
134289SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:0560-1)NessusSuSE Local Security Checks
critical
134288SUSE SLES12 Security Update : kernel (SUSE-SU-2020:0559-1)NessusSuSE Local Security Checks
critical
133992EulerOS 2.0 SP8 : kernel (EulerOS-SA-2020-1158)NessusHuawei Local Security Checks
critical
133913EulerOS 2.0 SP5 : kernel (EulerOS-SA-2020-1112)NessusHuawei Local Security Checks
critical
133632Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2020-5533)NessusOracle Linux Local Security Checks
high
132925SUSE SLES12 Security Update : kernel (SUSE-SU-2020:0093-1)NessusSuSE Local Security Checks
critical