CVE-2019-20934

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

An issue was discovered in the Linux kernel before 5.2.6. On NUMA systems, the Linux fair scheduler has a use-after-free in show_numa_stats() because NUMA fault statistics are inappropriately freed, aka CID-16d51a590a8c.

References

https://bugs.chromium.org/p/project-zero/issues/detail?id=1913

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.6

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=16d51a590a8ce3befb1308e0e7ab77f3b661af33

Details

Source: MITRE

Published: 2020-11-28

Updated: 2021-01-12

Type: CWE-416

Risk Information

CVSS v2

Base Score: 5.4

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

Impact Score: 7.8

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H

Impact Score: 4.2

Exploitability Score: 1

Severity: MEDIUM

Tenable Plugins

View all (21 total)

IDNameProductFamilySeverity
152089Scientific Linux Security Update : kernel on SL7.x x86_64 (2021:2725)NessusScientific Linux Local Security Checks
high
151979CentOS 7 : kernel (CESA-2021:2725)NessusCentOS Local Security Checks
high
151926Oracle Linux 7 : kernel (ELSA-2021-2725)NessusOracle Linux Local Security Checks
high
151888RHEL 7 : kernel (RHSA-2021:2725)NessusRed Hat Local Security Checks
high
151886RHEL 7 : kernel-rt (RHSA-2021:2726)NessusRed Hat Local Security Checks
high
148041EulerOS 2.0 SP5 : kernel (EulerOS-SA-2021-1684)NessusHuawei Local Security Checks
high
146701EulerOS 2.0 SP2 : kernel (EulerOS-SA-2021-1311)NessusHuawei Local Security Checks
high
146511SUSE SLES12 Security Update : kernel (SUSE-SU-2021:0452-1)NessusSuSE Local Security Checks
high
146476SUSE SLES12 Security Update : kernel (SUSE-SU-2021:0437-1)NessusSuSE Local Security Checks
high
146474SUSE SLES15 Security Update : kernel (SUSE-SU-2021:0438-1)NessusSuSE Local Security Checks
high
146470SUSE SLES12 Security Update : kernel (SUSE-SU-2021:0434-1)NessusSuSE Local Security Checks
high
145287openSUSE Security Update : the Linux Kernel (openSUSE-2021-75)NessusSuSE Local Security Checks
medium
145201EulerOS 2.0 SP3 : kernel (EulerOS-SA-2021-1079)NessusHuawei Local Security Checks
high
145120SUSE SLES12 Security Update : kernel (SUSE-SU-2021:0133-1)NessusSuSE Local Security Checks
medium
145018SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:0118-1)NessusSuSE Local Security Checks
medium
144914SUSE SLES12 Security Update : kernel (SUSE-SU-2021:0098-1)NessusSuSE Local Security Checks
high
144837OracleVM 3.4 : Unbreakable / etc (OVMSA-2021-0001)NessusOracleVM Local Security Checks
high
144802Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2021-9002)NessusOracle Linux Local Security Checks
high
144731EulerOS Virtualization for ARM 64 3.0.2.0 : kernel (EulerOS-SA-2021-1039)NessusHuawei Local Security Checks
high
144259SUSE SLES15 Security Update : kernel (SUSE-SU-2020:3798-1)NessusSuSE Local Security Checks
high
144168EulerOS 2.0 SP8 : kernel (EulerOS-SA-2020-2514)NessusHuawei Local Security Checks
medium