CVE-2020-28974

MEDIUM

Description

A slab-out-of-bounds read in fbcon in the Linux kernel before 5.9.7 could be used by local attackers to read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095. This occurs because KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for manipulations such as font height.

References

http://www.openwall.com/lists/oss-security/2020/11/25/1

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.7

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c4e0dff2095c579b142d5a0693257f1c58b4804

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

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

https://seclists.org/oss-sec/2020/q4/104

https://security.netapp.com/advisory/ntap-20210108-0003/

Details

Source: MITRE

Published: 2020-11-20

Updated: 2021-01-27

Type: CWE-125

Risk Information

CVSS v2.0

Base Score: 6.1

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

Impact Score: 8.5

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3.0

Base Score: 5

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

Impact Score: 4.7

Exploitability Score: 0.3

Severity: MEDIUM

Tenable Plugins

View all (40 total)

IDNameProductFamilySeverity
148041EulerOS 2.0 SP5 : kernel (EulerOS-SA-2021-1684)NessusHuawei 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
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
146352Oracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2021-9043)NessusOracle Linux Local Security Checks
high
146282openSUSE Security Update : RT kernel (openSUSE-2021-242)NessusSuSE Local Security Checks
high
146196Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2021-9001)NessusOracle Linux Local Security Checks
medium
145201EulerOS 2.0 SP3 : kernel (EulerOS-SA-2021-1079)NessusHuawei Local Security Checks
high
145005Amazon Linux AMI : kernel (ALAS-2021-1461)NessusAmazon Linux 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
144786Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerability (USN-4683-1)NessusUbuntu Local Security Checks
medium
144752Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4681-1)NessusUbuntu Local Security Checks
medium
144750Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-4679-1)NessusUbuntu Local Security Checks
high
144749Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4680-1)NessusUbuntu Local Security Checks
high
144731EulerOS Virtualization for ARM 64 3.0.2.0 : kernel (EulerOS-SA-2021-1039)NessusHuawei Local Security Checks
high
144693EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-1028)NessusHuawei Local Security Checks
high
144687EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-1009)NessusHuawei Local Security Checks
high
144494Debian DLA-2494-1 : linux security updateNessusDebian Local Security Checks
medium
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
high
144259SUSE SLES15 Security Update : kernel (SUSE-SU-2020:3798-1)NessusSuSE Local Security Checks
high
144210Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2020-5996)NessusOracle Linux Local Security Checks
medium
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
high
144101SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:3748-1)NessusSuSE Local Security Checks
high
144097Debian DLA-2483-1 : linux-4.19 security updateNessusDebian Local Security Checks
high
143860SUSE SLES12 Security Update : kernel (SUSE-SU-2020:3717-1)NessusSuSE Local Security Checks
high
143780SUSE SLES15 Security Update : kernel (SUSE-SU-2020:3522-1)NessusSuSE Local Security Checks
medium
143633SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:3718-1)NessusSuSE Local Security Checks
high
143619SUSE SLES12 Security Update : kernel (SUSE-SU-2020:3715-1)NessusSuSE Local Security Checks
high
143589Amazon Linux 2 : kernel (ALAS-2020-1566)NessusAmazon Linux Local Security Checks
high
143542openSUSE Security Update : the Linux Kernel (openSUSE-2020-2193)NessusSuSE Local Security Checks
high
143523openSUSE Security Update : the Linux Kernel (openSUSE-2020-2161)NessusSuSE Local Security Checks
high
143248Photon OS 3.0: Linux PHSA-2020-3.0-0163NessusPhotonOS Local Security Checks
medium