CVE-2021-29650

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 5.11.11. The netfilter subsystem allows attackers to cause a denial of service (panic) because net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h lack a full memory barrier upon the assignment of a new table value, aka CID-175e476b8cdf.

References

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=175e476b8cdf2a4de7432583b49c871345e4f8a1

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.11

https://lists.fedoraproject.org/archives/list/[email protected]/message/WKRNELXLVFDY6Y5XDMWLIH3VKIMQXLLR/

https://lists.fedoraproject.org/archives/list/[email protected]/message/RZGMUP6QEHJJEKPMLKOSPWYMW7PXFC2M/

https://lists.fedoraproject.org/archives/list/[email protected]/message/VTADK5ELGTATGW2RK3K5MBJ2WGYCPZCM/

https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html

https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html

Details

Source: MITRE

Published: 2021-03-30

Updated: 2021-06-23

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 (50 total)

IDNameProductFamilySeverity
155425Oracle Linux 8 : kernel (ELSA-2021-4356)NessusOracle Linux Local Security Checks
high
155219RHEL 8 : kernel (RHSA-2021:4356)NessusRed Hat Local Security Checks
high
155172RHEL 8 : kernel-rt (RHSA-2021:4140)NessusRed Hat Local Security Checks
high
155145CentOS 8 : kernel (CESA-2021:4356)NessusCentOS Local Security Checks
high
155070CentOS 8 : kernel-rt (CESA-2021:4140)NessusCentOS Local Security Checks
high
152978Oracle Linux 7 : kernel (ELSA-2021-3327)NessusOracle Linux Local Security Checks
high
152970CentOS 7 : kernel (CESA-2021:3327)NessusCentOS Local Security Checks
high
152950Scientific Linux Security Update : kernel on SL7.x x86_64 (2021:3327)NessusScientific Linux Local Security Checks
high
152935RHEL 7 : kernel (RHSA-2021:3327)NessusRed Hat Local Security Checks
high
152924RHEL 7 : kernel-rt (RHSA-2021:3328)NessusRed Hat Local Security Checks
high
151897Slackware 14.2 : Slackware 14.2 kernel (SSA:2021-202-01)NessusSlackware Local Security Checks
high
151793Amazon Linux 2 : kernel (ALAS-2021-1685)NessusAmazon Linux Local Security Checks
medium
151756openSUSE 15 Security Update : kernel (openSUSE-SU-2021:1977-1)NessusSuSE Local Security Checks
critical
151730openSUSE 15 Security Update : kernel (openSUSE-SU-2021:1975-1)NessusSuSE Local Security Checks
critical
151521Amazon Linux AMI : kernel (ALAS-2021-1516)NessusAmazon Linux Local Security Checks
high
151240EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-2062)NessusHuawei Local Security Checks
high
151238EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-2051)NessusHuawei Local Security Checks
high
151080openSUSE 15 Security Update : kernel (openSUSE-SU-2021:0873-1)NessusSuSE Local Security Checks
medium
150985Debian DLA-2689-1 : linux security updateNessusDebian Local Security Checks
high
150984Debian DLA-2690-1 : linux-4.19 security updateNessusDebian Local Security Checks
high
150927SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1975-1)NessusSuSE Local Security Checks
critical
150901SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:1977-1)NessusSuSE Local Security Checks
critical
150550SUSE SLES11 Security Update : kernel (SUSE-SU-2021:14724-1)NessusSuSE Local Security Checks
medium
150476SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1915-1)NessusSuSE Local Security Checks
medium
150463OracleVM 3.4 : Unbreakable / etc (OVMSA-2021-0016)NessusOracleVM Local Security Checks
high
150271EulerOS Virtualization 2.9.1 : kernel (EulerOS-SA-2021-1967)NessusHuawei Local Security Checks
high
150253EulerOS Virtualization 2.9.0 : kernel (EulerOS-SA-2021-1971)NessusHuawei Local Security Checks
high
149717SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1624-1)NessusSuSE Local Security Checks
high
149716SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1623-1)NessusSuSE Local Security Checks
high
149661Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel (Raspberry Pi) vulnerabilities (USN-4945-2)NessusUbuntu Local Security Checks
high
149633SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1617-1)NessusSuSE Local Security Checks
high
149584openSUSE Security Update : the Linux Kernel (openSUSE-2021-716)NessusSuSE Local Security Checks
medium
149491SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1596-1)NessusSuSE Local Security Checks
high
149487SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1595-1)NessusSuSE Local Security Checks
high
149463SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:1574-1)NessusSuSE Local Security Checks
medium
149462SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1573-1)NessusSuSE Local Security Checks
high
149457SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1571-1)NessusSuSE Local Security Checks
medium
149456SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1572-1)NessusSuSE Local Security Checks
high
149421Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9222)NessusOracle Linux Local Security Checks
high
149420Oracle Linux 7 : Unbreakable Enterprise kernel-container (ELSA-2021-9223)NessusOracle Linux Local Security Checks
high
149416Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-4945-1)NessusUbuntu Local Security Checks
high
149415Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-4947-1)NessusUbuntu Local Security Checks
high
149411Ubuntu 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-4949-1)NessusUbuntu Local Security Checks
high
149410Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4946-1)NessusUbuntu Local Security Checks
medium
149407Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-4948-1)NessusUbuntu Local Security Checks
high
149357Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2021-9220)NessusOracle Linux Local Security Checks
high
149356Oracle Linux 7 / 8 : Unbreakable Enterprise kernel-container (ELSA-2021-9221)NessusOracle Linux Local Security Checks
high
149296Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2021-9215)NessusOracle Linux Local Security Checks
high
148797Fedora 33 : kernel / kernel-headers / kernel-tools (2021-2306e89112)NessusFedora Local Security Checks
medium
148796Fedora 32 : kernel / kernel-headers / kernel-tools (2021-6b0f287b8b)NessusFedora Local Security Checks
medium