CVE-2021-28964medium
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 race condition was discovered in get_old_root in fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (BUG) because of a lack of locking on an extent buffer before a cloning operation, aka CID-dbcc7d57bffc.
References
https://security.netapp.com/advisory/ntap-20210430-0003/
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: 2021-03-22
Updated: 2021-06-23
Type: CWE-362
Risk Information
CVSS v2
Base Score: 1.9
Vector: AV:L/AC:M/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 3.4
Severity: LOW
CVSS v3
Base Score: 4.7
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 1
Severity: MEDIUM
Vulnerable Software
Configuration 1
OR
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to 5.11.8 (inclusive)
Configuration 2
OR
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 154404 | EulerOS 2.0 SP3 : kernel (EulerOS-SA-2021-2588) | Nessus | Huawei Local Security Checks | high |
| 153271 | EulerOS 2.0 SP2 : kernel (EulerOS-SA-2021-2392) | Nessus | Huawei Local Security Checks | high |
| 151897 | Slackware 14.2 : Slackware 14.2 kernel (SSA:2021-202-01) | Nessus | Slackware Local Security Checks | high |
| 151767 | EulerOS 2.0 SP5 : kernel (EulerOS-SA-2021-2221) | Nessus | Huawei Local Security Checks | high |
| 151756 | openSUSE 15 Security Update : kernel (openSUSE-SU-2021:1977-1) | Nessus | SuSE Local Security Checks | critical |
| 151730 | openSUSE 15 Security Update : kernel (openSUSE-SU-2021:1975-1) | Nessus | SuSE Local Security Checks | critical |
| 151307 | EulerOS Virtualization for ARM 64 3.0.2.0 : kernel (EulerOS-SA-2021-2075) | Nessus | Huawei Local Security Checks | high |
| 151240 | EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-2062) | Nessus | Huawei Local Security Checks | high |
| 151238 | EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-2051) | Nessus | Huawei Local Security Checks | high |
| 151229 | EulerOS Virtualization 3.0.6.6 : kernel (EulerOS-SA-2021-2040) | Nessus | Huawei Local Security Checks | high |
| 151042 | EulerOS 2.0 SP8 : kernel (EulerOS-SA-2021-1983) | Nessus | Huawei Local Security Checks | high |
| 150985 | Debian DLA-2689-1 : linux security update | Nessus | Debian Local Security Checks | high |
| 150984 | Debian DLA-2690-1 : linux-4.19 security update | Nessus | Debian Local Security Checks | high |
| 150927 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1975-1) | Nessus | SuSE Local Security Checks | critical |
| 150901 | SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:1977-1) | Nessus | SuSE Local Security Checks | critical |
| 150463 | OracleVM 3.4 : Unbreakable / etc (OVMSA-2021-0016) | Nessus | OracleVM Local Security Checks | high |
| 150292 | Ubuntu 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-4984-1) | Nessus | Ubuntu Local Security Checks | medium |
| 150271 | EulerOS Virtualization 2.9.1 : kernel (EulerOS-SA-2021-1967) | Nessus | Huawei Local Security Checks | high |
| 150253 | EulerOS Virtualization 2.9.0 : kernel (EulerOS-SA-2021-1971) | Nessus | Huawei Local Security Checks | high |
| 150233 | Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-4982-1) | Nessus | Ubuntu Local Security Checks | medium |
| 150155 | Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4979-1) | Nessus | Ubuntu Local Security Checks | medium |
| 149892 | openSUSE Security Update : the Linux Kernel (openSUSE-2021-758) | Nessus | SuSE Local Security Checks | critical |
| 149872 | Amazon Linux AMI : kernel (ALAS-2021-1503) | Nessus | Amazon Linux Local Security Checks | high |
| 149717 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1624-1) | Nessus | SuSE Local Security Checks | high |
| 149491 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1596-1) | Nessus | SuSE Local Security Checks | high |
| 149462 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1573-1) | Nessus | SuSE Local Security Checks | high |
| 149421 | Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9222) | Nessus | Oracle Linux Local Security Checks | high |
| 149420 | Oracle Linux 7 : Unbreakable Enterprise kernel-container (ELSA-2021-9223) | Nessus | Oracle Linux Local Security Checks | high |
| 149407 | Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-4948-1) | Nessus | Ubuntu Local Security Checks | high |
| 149357 | Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2021-9220) | Nessus | Oracle Linux Local Security Checks | high |
| 149356 | Oracle Linux 7 / 8 : Unbreakable Enterprise kernel-container (ELSA-2021-9221) | Nessus | Oracle Linux Local Security Checks | high |
| 149296 | Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2021-9215) | Nessus | Oracle Linux Local Security Checks | high |
| 148919 | Amazon Linux 2 : kernel (ALAS-2021-1627) | Nessus | Amazon Linux Local Security Checks | high |
| 148747 | SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:1238-1) | Nessus | SuSE Local Security Checks | critical |
| 148700 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1210-1) | Nessus | SuSE Local Security Checks | high |
| 148698 | SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1211-1) | Nessus | SuSE Local Security Checks | critical |
| 148509 | SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1175-1) | Nessus | SuSE Local Security Checks | medium |
| 148438 | openSUSE Security Update : the Linux Kernel (openSUSE-2021-532) | Nessus | SuSE Local Security Checks | critical |
| 148205 | Fedora 32 : kernel (2021-9503fffad9) | Nessus | Fedora Local Security Checks | high |
| 148156 | Fedora 33 : kernel (2021-68b0dd2373) | Nessus | Fedora Local Security Checks | high |