CVE-2020-25704

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

A flaw memory leak in the Linux kernel performance monitoring subsystem was found in the way if using PERF_EVENT_IOC_SET_FILTER. A local user could use this flaw to starve the resources causing denial of service.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1895961

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bdb157cdebbf95a1cd94ed2e01b338714075d00

https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html

https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html

https://www.openwall.com/lists/oss-security/2020/11/09/1

Details

Source: MITRE

Published: 2020-12-02

Updated: 2020-12-18

Type: CWE-400

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

Tenable Plugins

View all (38 total)

IDNameProductFamilySeverity
149914Oracle Linux 8 : kernel (ELSA-2021-1578)NessusOracle Linux Local Security Checks
high
149874CentOS 8 : kernel (CESA-2021:1578)NessusCentOS Local Security Checks
high
149670RHEL 8 : kernel (RHSA-2021:1578)NessusRed Hat Local Security Checks
high
149660RHEL 8 : kernel-rt (RHSA-2021:1739)NessusRed Hat Local Security Checks
high
148041EulerOS 2.0 SP5 : kernel (EulerOS-SA-2021-1684)NessusHuawei Local Security Checks
high
147982Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-4752-1)NessusUbuntu Local Security Checks
high
147978Ubuntu 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-4751-1)NessusUbuntu Local Security Checks
high
147690EulerOS Virtualization 2.9.0 : kernel (EulerOS-SA-2021-1642)NessusHuawei Local Security Checks
high
147512EulerOS Virtualization 2.9.1 : kernel (EulerOS-SA-2021-1604)NessusHuawei Local Security Checks
high
146282openSUSE Security Update : RT kernel (openSUSE-2021-242)NessusSuSE Local Security Checks
high
145518Ubuntu 18.04 LTS : Linux kernel vulnerability (USN-4710-1)NessusUbuntu Local Security Checks
medium
145511Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-4711-1)NessusUbuntu Local Security Checks
high
145005Amazon Linux AMI : kernel (ALAS-2021-1461)NessusAmazon Linux Local Security Checks
medium
144750Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-4679-1)NessusUbuntu Local Security Checks
medium
144731EulerOS Virtualization for ARM 64 3.0.2.0 : kernel (EulerOS-SA-2021-1039)NessusHuawei Local Security Checks
high
144494Debian DLA-2494-1 : linux security updateNessusDebian Local Security Checks
high
144464Amazon Linux AMI : kernel (ALAS-2020-1462) (deprecated)NessusAmazon Linux Local Security Checks
high
144313openSUSE Security Update : the Linux Kernel (openSUSE-2020-2260)NessusSuSE Local Security Checks
medium
144210Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2020-5996)NessusOracle Linux Local Security Checks
high
144207Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2020-5995)NessusOracle Linux Local Security Checks
high
144168EulerOS 2.0 SP8 : kernel (EulerOS-SA-2020-2514)NessusHuawei Local Security Checks
medium
144101SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:3748-1)NessusSuSE Local Security Checks
medium
144097Debian DLA-2483-1 : linux-4.19 security updateNessusDebian Local Security Checks
high
143875SUSE SLES15 Security Update : kernel (SUSE-SU-2020:3532-1)NessusSuSE Local Security Checks
high
143860SUSE SLES12 Security Update : kernel (SUSE-SU-2020:3717-1)NessusSuSE Local Security Checks
medium
143857SUSE SLES12 Security Update : kernel (SUSE-SU-2020:3544-1)NessusSuSE Local Security Checks
high
143856SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:3507-1)NessusSuSE Local Security Checks
high
143802SUSE SLES15 Security Update : kernel (SUSE-SU-2020:3513-1)NessusSuSE Local Security Checks
high
143780SUSE SLES15 Security Update : kernel (SUSE-SU-2020:3522-1)NessusSuSE Local Security Checks
high
143619SUSE SLES12 Security Update : kernel (SUSE-SU-2020:3715-1)NessusSuSE Local Security Checks
medium
143589Amazon Linux 2 : kernel (ALAS-2020-1566)NessusAmazon Linux Local Security Checks
medium
143411EulerOS 2.0 SP9 : kernel (EulerOS-SA-2020-2498)NessusHuawei Local Security Checks
medium
143408EulerOS 2.0 SP9 : kernel (EulerOS-SA-2020-2485)NessusHuawei Local Security Checks
medium
143398openSUSE Security Update : the Linux Kernel (openSUSE-2020-2112)NessusSuSE Local Security Checks
high
143314openSUSE Security Update : the Linux Kernel (openSUSE-2020-2034)NessusSuSE Local Security Checks
high
143248Photon OS 3.0: Linux PHSA-2020-3.0-0163NessusPhotonOS Local Security Checks
high
142986Photon OS 2.0: Linux PHSA-2020-2.0-0295NessusPhotonOS Local Security Checks
high
142945openSUSE Security Update : the Linux Kernel (openSUSE-2020-1906)NessusSuSE Local Security Checks
high